High-response scroll compression structure for transporting temporary-care refrigerator

Abstract

This invention discloses a high-response scroll compression structure for a transport-supported refrigeration unit, belonging to the field of cold chain logistics technology. It solves the problems of slow dynamic response, poor energy consumption adaptability, and insufficient sealing stability in existing technologies. The structure includes a scroll compression component, a scroll disk drive unit, a dynamic gap adjustment component, a sensing component, and a compression control module. This invention integrates the scroll compression component, scroll disk drive unit, dynamic gap adjustment component, sensing component, and compression control module. The dynamic gap adjustment component uses an electromagnetic push rod to drive the axial displacement of the stationary scroll disk to precisely adjust the meshing gap between the stationary and moving scroll disks. It works in conjunction with position and pressure sensors to monitor the meshing position and cavity pressure fluctuations in real time. The compression control module outputs adjustment commands quickly based on the dual sensor signals through a closed-loop algorithm, realizing active and high-precision dynamic adjustment of the cooling capacity and significantly shortening the cooling capacity response time.

Description

Technical Field

[0001] This invention belongs to the field of cold chain logistics technology, specifically relating to a high-response vortex compression structure for a transport temporary storage refrigeration unit. Background Technology

[0002] Refrigeration technology for temporary holding during transport is a core supporting technology in the cold chain logistics field, widely used for long-distance transportation of live seafood, seedlings, and specially farmed animals. Its core function is to maintain a constant temperature and humidity environment within the transport compartment using a refrigeration unit, ensuring the survival rate of the temporarily held animals. As the core power component of refrigeration units for temporary holding during transport, scroll compressors, with their advantages of compact structure, low operating noise, and high volumetric efficiency, have gradually replaced traditional piston compressors as the mainstream choice.

[0003] As the cold chain transportation industry places increasing demands on transportation efficiency and survival rates during temporary holding, transportation scenarios are becoming increasingly dynamic: frequent starts and stops of transport vehicles, alternating day and night temperatures (with temperature differences reaching 15-20℃), and changes in the number and metabolic intensity of temporarily held animals all require refrigeration compressors to quickly adjust their refrigeration output to cope with load fluctuations. Currently, the technological development of scroll compressors for temporary holding refrigeration units focuses on optimizing steady-state operating conditions, while improving dynamic response performance has become a technological bottleneck in the industry.

[0004] Chinese patent CN121283054A discloses a permanent magnet motor and a scroll-type variable frequency compressor. By limiting the pole slot matching, proportional coefficient Ks and key dimensions of the stator and rotor, the magnetic circuit and loss distribution are optimized, improving efficiency, reducing volume and cost and reducing torque pulsation. However, the scroll-type variable frequency compressor does not clearly define the adaptability adjustment under different refrigerants and operating conditions, and has limited consideration for the stability of permanent magnets under extreme environments.

[0005] Chinese patent CN121230283A discloses a control method, device, refrigeration equipment, electronic equipment, and readable storage medium. This method controls the compressor's start and stop based on the compartment temperature, dynamically adjusts the speed based on the percentage of the previous cycle's operating time, and employs a stepped speed-up and safety protection mechanism to reduce energy consumption and extend compressor life. However, this method relies on historical data, lacks real-time performance, does not consider the influence of environment and usage habits, and has limited temperature control accuracy and adaptability to operating conditions. Therefore, the aforementioned prior art represents the mainstream technology for scroll compressors used in temporary transport refrigeration units. Their core design concepts have not broken through the limitations of "steady-state optimization," and the problem of insufficient dynamic response performance has not been effectively solved. Specifically: Dynamic response lag: The variable frequency speed control solution requires four steps from load change to speed adjustment completion: "temperature detection - signal feedback - frequency conversion control - speed change". The response time is as long as 3-5 seconds, resulting in temperature fluctuations in the temporary curing chamber of more than ±0.8℃, which cannot meet the requirements of high-precision temporary curing. Poor energy consumption adaptability: Under dynamic operating conditions, the cooling capacity output of the compressor does not match the actual demand. Under light load, it is in a "large horse pulling a small cart" state, and the energy efficiency ratio (COP) decreases by 15%-20%, resulting in energy waste. Insufficient sealing stability: The elastic gap compensation scheme is a passive compensation. When the load changes rapidly, the adjustment speed of the meshing gap lags behind the pressure change, which can easily cause instantaneous leakage. Long-term operation will aggravate the wear of the scroll plate and shorten the service life of the compressor.

[0006] To address the issues of slow dynamic response, poor energy consumption adaptability, and insufficient sealing stability in existing technologies, we propose a high-response scroll compression structure for transport temporary storage refrigeration units. Summary of the Invention

[0007] The purpose of this invention is to address the shortcomings of existing technologies by providing a high-response scroll compression structure for transport temporary storage refrigeration units, which solves the problems of slow dynamic response, poor energy consumption adaptability, and insufficient sealing stability in existing technologies.

[0008] Existing technologies suffer from slow dynamic response, poor energy consumption adaptability, and insufficient sealing stability. We propose a high-response scroll compression structure for a transport-support refrigeration unit. In short, this high-response scroll compression structure comprises a scroll compression assembly, a scroll disk drive unit, a dynamic gap adjustment assembly, a sensing assembly, and a compression control module. This invention integrates the scroll compression assembly, scroll disk drive unit, dynamic gap adjustment assembly, sensing assembly, and compression control module. The dynamic gap adjustment assembly uses an electromagnetic push rod to drive the axial displacement of the stationary scroll disk to precisely adjust the meshing gap between the stationary and moving scroll disks. Combined with position and pressure sensors, it monitors the meshing position and cavity pressure fluctuations in real time. The compression control module, based on the dual-sensor signals, rapidly outputs adjustment commands through a closed-loop algorithm, achieving active and high-precision dynamic adjustment of the cooling capacity. This significantly shortens the cooling capacity response time and keeps the temperature fluctuation within the support chamber stably controlled within ±0.3℃, solving the problems of slow dynamic response and large temperature fluctuations in existing technologies.

[0009] This invention is implemented as follows: a high-response scroll compression structure for a transport-operated temporary storage refrigeration unit, the high-response scroll compression structure for the transport-operated temporary storage refrigeration unit comprising: A scroll compressor assembly is disposed inside the compressor housing. The scroll compressor assembly includes a stationary scroll plate and a moving scroll plate, which together form a scroll compressor chamber. A scroll drive unit is disposed inside the compressor housing and is used to drive the moving scroll, and the scroll drive unit is connected to the moving scroll; A dynamic gap adjustment component is disposed in the vortex compression chamber and connected to the stationary vortex disk. The dynamic gap adjustment component is used to adjust the meshing gap between the stationary vortex disk and the moving vortex disk. The sensing components are located inside the vortex compression chamber; The compression control module is electrically connected to the sensing component and the dynamic gap adjustment component. It is used to receive sensor signals collected by the sensing component and output adjustment commands to control the dynamic gap adjustment component to drive the stationary scroll plate to move relative to the scroll plate direction in order to adjust the meshing gap.

[0010] Preferably, the sensing component includes: A position sensor, which is installed inside the compressor housing, is used to detect the meshing position of the stationary scroll plate and the moving scroll plate; The pressure sensor, located inside the compressor housing, is used to detect pressure fluctuations within the scroll compressor chamber.

[0011] Preferably, the scroll disk drive unit includes: A drive motor, which is fixedly mounted on the compressor housing; A drive shaft is fixedly connected to the output shaft of a drive motor. The end of the drive shaft away from the drive motor passes through the compressor housing and is fixedly connected to a moving scroll plate.

[0012] Preferably, the dynamic gap adjustment assembly includes an electromagnetic push rod, a disc spring, and an adjustment seat. The electromagnetic push rod is fixed on the adjustment seat, and the output end of the electromagnetic push rod is connected to the stationary vortex disk. The disc spring is disposed between the stationary vortex disk and the adjustment seat to provide a reset spring force.

[0013] Preferably, the volute teeth of the stationary and moving volutes adopt a modified involute profile, with a base circle radius of 6-8 mm, a tooth height of 20-26 mm, and a dynamic adjustment margin of 0.02-0.05 mm reserved at the tooth tip.

[0014] Preferably, the tooth tip surfaces of the stationary and moving vortex disks are provided with a titanium nitride wear-resistant coating with a coating thickness of 2-5 μm.

[0015] Preferably, the response time of the electromagnetic push rod is ≤0.5 seconds, the rated thrust of the electromagnetic push rod is 500-800N, and the displacement accuracy is 0.001-0.005mm.

[0016] Preferably, the volute teeth of the stationary and moving volutes adopt a combination of involute and arc profiles.

[0017] Compared with the prior art, the embodiments of this application have the following main advantages: This invention integrates a scroll compressor assembly, a scroll disk drive unit, a dynamic gap adjustment assembly, a sensing assembly, and a compression control module. The dynamic gap adjustment assembly uses an electromagnetic push rod to drive the axial displacement of the stationary scroll disk to precisely adjust the meshing gap between the stationary and moving scroll disks. In conjunction with position and pressure sensors, it monitors the meshing position and cavity pressure fluctuations in real time. The compression control module outputs adjustment commands quickly based on the dual sensor signals through a closed-loop algorithm, realizing active and high-precision dynamic adjustment of the cooling capacity. This significantly shortens the cooling capacity response time and keeps the temperature fluctuation in the temporary holding chamber stably controlled within ±0.3℃, solving the problems of slow dynamic response and large temperature fluctuations in existing technologies.

[0018] In this embodiment of the invention, the rapid response characteristics of the electromagnetic push rod directly drive the axial displacement of the stationary scroll plate. Combined with the elastic reset function of the disc spring, this achieves active, high-precision dynamic adjustment of the meshing gap between the stationary and moving scroll plates. This simplifies the multi-stage response required by traditional variable frequency speed control—temperature detection, signal feedback, variable frequency control, and speed change—to a direct mechanical action, reducing the cooling capacity adjustment response time to less than 1 second, a 3-5 times improvement over existing technologies. Simultaneously, the dynamic gap adjustment component, through precise control with a displacement accuracy of 0.001-0.005 mm, ensures that the meshing gap remains within a certain range. Precisely adjustable within the range of 0.02-0.08mm, the compressor can achieve real-time adaptation of cooling capacity without changing the speed within the load variation range of 30%-100%, avoiding energy waste caused by "over-powered" operation under light load conditions, and keeping the coefficient of performance (COP) fluctuation within 5%. In addition, the synergistic effect of the electromagnetic push rod and disc spring allows the stationary scroll plate to adaptively adjust the sealing pressure according to pressure fluctuations, effectively suppressing instantaneous leakage during sudden load changes. Combined with the titanium nitride wear-resistant coating on the top of the scroll teeth, it significantly reduces mechanical wear under high-frequency dynamic conditions and extends the service life of the compressor. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a high-response vortex compression structure for a transport temporary refrigeration unit provided by the present invention.

[0020] In the diagram: 1-Scroll compressor assembly, 11-Stationary scroll plate, 12-Moving scroll plate, 13-Scroll compression chamber, 2-Compressor housing, 3-Scroll plate drive unit, 31-Drive motor, 32-Drive shaft, 4-Dynamic gap adjustment assembly, 41-Electromagnetic push rod, 42-Disc spring, 43-Adjustment seat, 5-Sensing assembly, 51-Position sensor, 52-Pressure sensor, 6-Compression control module. Detailed Implementation

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0022] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] Existing technologies suffer from slow dynamic response, poor energy consumption adaptability, and insufficient sealing stability. We propose a high-response scroll compression structure for a transport-support refrigeration unit. In short, this high-response scroll compression structure comprises a scroll compression component 1, a scroll disk drive unit 3, a dynamic gap adjustment component 4, a sensing component 5, and a compression control module 6. This invention integrates the scroll compression component 1, scroll disk drive unit 3, dynamic gap adjustment component 4, sensing component 5, and compression control module 6. The dynamic gap adjustment component 4 uses an electromagnetic push rod 41 to drive the stationary scroll disk 11 axially, precisely adjusting the meshing gap between the stationary scroll disk 11 and the moving scroll disk 12. Combined with a position sensor 51 and a pressure sensor 52, it monitors the meshing position and cavity pressure fluctuations in real time. The compression control module 6, based on the dual-sensor signals, rapidly outputs adjustment commands through a closed-loop algorithm, achieving active and high-precision dynamic adjustment of the cooling capacity. This significantly shortens the cooling capacity response time and keeps the temperature fluctuation within the temporary support chamber stable within ±0.3℃, solving the problems of slow dynamic response and large temperature fluctuations in existing technologies.

[0024] This invention provides a high-response scroll compression structure for a transport-supported refrigeration unit, such as... Figure 1 As shown, the high-response scroll compressor structure of the transport temporary storage refrigeration unit specifically includes: The scroll compression assembly 1 is disposed inside the compressor housing 2. The scroll compression assembly 1 includes a stationary scroll disk 11 and a moving scroll disk 12, which form a scroll compression chamber 13. The scroll drive unit 3 is disposed inside the compressor housing 2 and is used to drive the moving scroll 12. The scroll drive unit 3 is connected to the moving scroll 12. The dynamic gap adjustment component 4 is disposed in the vortex compression chamber 13 and connected to the stationary vortex disk 11. The dynamic gap adjustment component 4 is used to adjust the meshing gap between the stationary vortex disk 11 and the moving vortex disk 12. The sensing component 5 is disposed inside the vortex compression chamber 13; The compression control module 6 is electrically connected to the sensing component 5 and the dynamic gap adjustment component 4. It is used to receive the sensor signals collected by the sensing component 5 and output adjustment commands to control the dynamic gap adjustment component 4 to push the stationary scroll plate 11 to move relative to the scroll plate direction to adjust the meshing gap.

[0025] This invention integrates a scroll compressor assembly 1, a scroll disk drive unit 3, a dynamic gap adjustment assembly 4, a sensing assembly 5, and a compression control module 6. The dynamic gap adjustment assembly 4 uses an electromagnetic push rod 41 to push the stationary scroll disk 11 to move axially, thereby precisely adjusting the meshing gap between the stationary scroll disk 11 and the moving scroll disk 12. In conjunction with a position sensor 51 and a pressure sensor 52, it monitors the meshing position and cavity pressure fluctuations in real time. The compression control module 6 outputs adjustment commands quickly through a closed-loop algorithm based on the dual sensor signals, realizing active and high-precision dynamic adjustment of the cooling capacity. This significantly shortens the cooling capacity response time and keeps the temperature fluctuation in the temporary holding chamber stably controlled within ±0.3℃, solving the problems of slow dynamic response and large temperature fluctuations in the prior art.

[0026] In a further preferred embodiment of the present invention, the sensing component 5 includes: Position sensor 51, which is disposed inside the compressor housing 2, is used to detect the meshing position of stationary scroll plate 11 and moving scroll plate 12; Pressure sensor 52 is installed inside the compressor housing 2 and is used to detect pressure fluctuations in the scroll compression chamber 13.

[0027] In this embodiment, the compression control module 6 outputs an adjustment signal in real time through the coordinated detection of position sensor 51 and pressure sensor 52, so as to achieve precise matching between meshing clearance and load changes and ensure high response performance.

[0028] In a further preferred embodiment of the present invention, the scroll disk drive unit 3 includes: The drive motor 31 is fixedly mounted on the compressor housing 2, and the drive motor 31 can be a single-phase asynchronous motor. The drive motor 31 is fixedly mounted on the compressor housing 2 by a buckle or bolt. A drive shaft 32 is fixedly connected to the output shaft of the drive motor 31. One end of the drive shaft 32 away from the drive motor 31 passes through the compressor housing 2 and is fixedly connected to the moving scroll plate 12. One end of the drive shaft 32 is fixedly connected to the moving scroll plate 12 by plugging or riveting.

[0029] In this embodiment, the dynamic gap adjustment assembly 4 includes an electromagnetic push rod 41, a disc spring 42, and an adjustment seat 43. The electromagnetic push rod 41 is fixed on the adjustment seat 43, and the output end of the electromagnetic push rod 41 is connected to the stationary scroll plate 11. The disc spring 42 is disposed between the stationary scroll plate 11 and the adjustment seat 43 to provide a reset spring force. The electromagnetic push rod 41 is electrically connected to the compression control module 6, and the electromagnetic push rod 41 is fixedly installed in the adjustment seat 43 by welding or snap-fit. The adjustment seat 43 is fixedly installed in the compressor housing 2 by snap-fit ​​or bolts. The response time of the electromagnetic push rod 41 is ≤0.5 seconds, the rated thrust of the electromagnetic push rod 41 is 500-800N, and the displacement accuracy is 0.001-0.005mm.

[0030] In this embodiment of the invention, the electromagnetic push rod 41 directly drives the axial displacement of the stationary scroll plate 11 through its rapid response characteristics. Combined with the elastic reset function of the disc spring 42, this achieves active and high-precision dynamic adjustment of the meshing gap between the stationary scroll plate 11 and the moving scroll plate 12. This simplifies the multi-stage response required by traditional variable frequency speed control—temperature detection, signal feedback, variable frequency control, and speed change—to a direct mechanical action, reducing the cooling capacity adjustment response time to less than 1 second, a 3-5 times improvement over existing technologies. Simultaneously, the dynamic gap adjustment component 4 ensures meshing accuracy with precise control of displacement accuracy reaching 0.001-0.005 mm. The gap is precisely adjustable within the range of 0.02-0.08mm, enabling the compressor to adapt its cooling capacity in real time without changing its speed within a load variation range of 30%-100%, avoiding energy waste caused by "over-powered" operation under light load conditions, and keeping the coefficient of performance (COP) fluctuation within 5%. In addition, the synergistic effect of the electromagnetic push rod 41 and the disc spring 42 allows the stationary scroll plate 11 to adaptively adjust the sealing pressure according to pressure fluctuations, effectively suppressing instantaneous leakage during sudden load changes. Combined with the titanium nitride wear-resistant coating on the top of the scroll teeth, it significantly reduces mechanical wear under high-frequency dynamic conditions and extends the service life of the compressor.

[0031] In a further preferred embodiment of the present invention, the volute teeth of the stationary volute 11 and the moving volute 12 adopt a modified involute profile, with a base circle radius of 6-8 mm, a tooth height of 20-26 mm, and a dynamic adjustment margin of 0.02-0.05 mm reserved at the tooth tip. The tooth tip surfaces of the stationary volute 11 and the moving volute 12 are provided with a titanium nitride wear-resistant coating with a coating thickness of 2-5 μm.

[0032] In this embodiment, by modifying the involute profile (base circle radius 6-8mm, tooth height 20-26mm, tooth tip reserved adjustment margin of 0.02-0.05mm) and optimizing the titanium nitride wear-resistant coating (thickness 2-5μm), or by using a combination of circular involute and circular arc profiles in the alternative, both adjustment flexibility and structural wear resistance are taken into account. This significantly reduces instantaneous leakage and scroll wear, ensuring that the compressor's energy efficiency ratio (COP) fluctuation does not exceed 5% within the 30%-100% load variation range (reduced from 0.4 to 0.2 compared to the prior art), total energy consumption is reduced by 10%-12.5% ​​(reduced by 12.5%-7.9% compared to the prior art), and service life is extended to more than 3 times that of the prior art. This effectively improves the energy consumption adaptation accuracy and structural stability under dynamic operating conditions.

[0033] In a further preferred embodiment of the present invention, the scroll teeth of the stationary scroll disk 11 and the moving scroll disk 12 adopt a combination of involute and arc profiles. Its advantages include a more mature processing technology, a 15% reduction in production costs, and gas leakage during meshing that is comparable to the original design. Furthermore, the base circle radius is 7mm, the arc segment radius is 5mm, the tooth height is 24mm, and the tooth tip is also coated with a titanium nitride wear-resistant coating. Combined with the dynamic gap adjustment component 4, the same cooling capacity adjustment response performance and energy consumption optimization effect can be achieved.

[0034] When the load on the transport and temporary storage refrigeration unit changes, the pressure sensor 52 first detects the pressure fluctuation in the scroll compression chamber 13, and the position sensor 51 simultaneously provides feedback on the engagement position of the scroll plate. The compression control module 6 analyzes the signal through its built-in algorithm to determine the required direction and magnitude of the cooling capacity adjustment, and then sends an adjustment signal to the electromagnetic push rod 41: if the cooling capacity needs to be increased, the electromagnetic push rod 41 pushes the stationary scroll plate 11 to move towards the moving scroll plate 12, reducing the engagement gap and improving the compression efficiency; if the cooling capacity needs to be reduced, the electromagnetic push rod 41 moves in the opposite direction, and the disc spring 42 pulls the stationary scroll plate 11 back to its original position, increasing the engagement gap and reducing the compression power. The entire adjustment process does not require changing the compressor speed, and the cooling capacity is adapted directly through the rapid action of the mechanical structure, resulting in fast response and precise adjustment.

[0035] In a further preferred embodiment of the present invention, in the dynamic gap adjustment component 4, a piezoelectric ceramic actuator can be used instead of the electromagnetic push rod 41. The piezoelectric ceramic actuator has a faster response speed (≤0.3 seconds) and higher displacement accuracy (0.0005 mm), making it suitable for precision temporary curing scenarios with extremely high response speed requirements. Furthermore, the piezoelectric ceramic actuator is fixed to the adjustment seat 43, and the displacement is amplified through a flexible hinge mechanism to drive the static vortex disk 11 to move. The reset is achieved in conjunction with the disc spring 42. The compression control module 6 is adapted to the drive signal output logic of the piezoelectric ceramic, which can achieve the same dynamic adjustment effect as the original solution.

[0036] In a further preferred embodiment of the present invention, when the high-response vortex compression structure of the transport holding refrigeration unit is applied to the long-distance transportation scenario of seafood, a cold chain logistics company undertakes the cross-provincial transportation task of live lobsters, with a transportation distance of 1,500 kilometers and a transportation time of 24 hours. The volume of the holding water in the transport cabin is 10 m³, the density of the lobsters is 5 kg / m³, and the holding water temperature is required to be maintained at 8-10℃ with a temperature fluctuation not exceeding ±0.5℃.

[0037] In this embodiment, the refrigeration unit equipped with the high-response scroll compression structure of the transport and holding refrigeration unit of this invention is mounted on a transport vehicle. During transportation, the ambient temperature suddenly rises from 20°C to 38°C (lasting for 2 hours), and some lobsters experience increased metabolic intensity due to stress (load increases by 40%). At this time, the pressure sensor 52 and position sensor 51 of the refrigeration unit quickly detect the load change, and the compression control module 6 completes the adjustment signal output within 0.6 seconds. The electromagnetic push rod 41 pushes the stationary scroll plate 11 to move by 0.03mm, reducing the meshing gap. The cooling capacity quickly increases from 12kW to 18kW, and the holding water temperature stabilizes at 8.5-9.2°C, with a fluctuation range of only ±0.35°C.

[0038] Application results: After transportation, the survival rate of lobsters reached 98%, which is 8 percentage points higher than the transportation solution using existing refrigeration technology (90% survival rate); the total energy consumption was 120kWh, which is 14.3% lower than the existing technology solution (140kWh), and the cost of a single transportation was reduced by 300 yuan.

[0039] In a further preferred embodiment of the present invention, when the high-response vortex compression structure of the transport holding refrigeration unit is applied to the transportation scenario of special breeding animals, a research institution transports experimental small guinea pigs for 8 hours. The transport cabin is equipped with a constant temperature holding box, which is required to maintain the temperature at 24°C with a fluctuation range not exceeding ±0.3°C, so as to avoid the temperature fluctuation affecting the accuracy of experimental data.

[0040] In this embodiment, during transportation, a malfunction in the transport vehicle's air conditioning caused the initial temperature inside the transport compartment to drop from 24°C to 20°C (within one hour). After the malfunction was resolved, external heat rapidly entered, causing the temperature to rise sharply. The high-response scroll compressor structure of this invention's transport holding refrigeration unit quickly responds to temperature changes, achieving precise adaptation of the cooling capacity by adjusting the meshing gap. It completes the switching of cooling capacity from 5kW to 10kW within 0.5 seconds, ultimately stabilizing the holding chamber temperature at 23.8-24.2°C, with a fluctuation range of only ±0.2°C.

[0041] Application results: The guinea pigs remained stable during transportation without any stress response, and the experimental data collection was unaffected; the total energy consumption was 32kWh, which is 17.9% lower than the existing technology (39kWh).

[0042] In summary, this invention provides a high-response scroll compression structure for a transport and temporary holding refrigeration unit. This invention integrates a scroll compression assembly 1, a scroll disk drive unit 3, a dynamic gap adjustment assembly 4, a sensing assembly 5, and a compression control module 6. The dynamic gap adjustment assembly 4 uses an electromagnetic push rod 41 to push the stationary scroll disk 11 axially to precisely adjust the meshing gap between the stationary scroll disk 11 and the moving scroll disk 12. In conjunction with a position sensor 51 and a pressure sensor 52, it monitors the meshing position and cavity pressure fluctuations in real time. The compression control module 6, based on the dual sensor signals, rapidly outputs adjustment commands through a closed-loop algorithm, achieving active and high-precision dynamic adjustment of the cooling capacity. This significantly shortens the cooling capacity response time and keeps the temperature fluctuations in the temporary holding chamber stably controlled within ±0.3℃, solving the problems of slow dynamic response and large temperature fluctuations in existing technologies.

[0043] It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of the present invention according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of the present invention. These technical solutions are also within the scope of protection of the present invention.

Claims

1. A high-response scroll compression structure for a transport temporary storage refrigeration unit, characterized in that, include: A scroll compressor assembly is disposed inside the compressor housing. The scroll compressor assembly includes a stationary scroll plate and a moving scroll plate, which together form a scroll compressor chamber. A scroll drive unit is disposed inside the compressor housing and is used to drive the moving scroll, and the scroll drive unit is connected to the moving scroll; A dynamic gap adjustment component is disposed in the vortex compression chamber and connected to the stationary vortex disk. The dynamic gap adjustment component is used to adjust the meshing gap between the stationary vortex disk and the moving vortex disk. The sensing components are located inside the vortex compression chamber; The compression control module is electrically connected to the sensing component and the dynamic gap adjustment component. It is used to receive sensor signals collected by the sensing component and output adjustment commands to control the dynamic gap adjustment component to drive the stationary scroll plate to move relative to the scroll plate direction in order to adjust the meshing gap.

2. The high-response scroll compression structure of the transport temporary storage refrigeration unit as described in claim 1, characterized in that: The sensing component includes: A position sensor, which is installed inside the compressor housing, is used to detect the meshing position of the stationary scroll plate and the moving scroll plate; The pressure sensor, located inside the compressor housing, is used to detect pressure fluctuations within the scroll compressor chamber.

3. The high-response scroll compression structure of the transport temporary storage refrigeration unit as described in claim 1, characterized in that: The scroll disk drive unit includes: A drive motor, which is fixedly mounted on the compressor housing; A drive shaft is fixedly connected to the output shaft of a drive motor. The end of the drive shaft away from the drive motor passes through the compressor housing and is fixedly connected to a moving scroll plate.

4. The high-response scroll compression structure of the transport temporary storage refrigeration unit as described in claim 3, characterized in that: The dynamic gap adjustment assembly includes an electromagnetic push rod, a disc spring, and an adjustment base. The electromagnetic push rod is fixed on the adjustment base, and its output end is connected to the stationary vortex disk. The disc spring is located between the stationary vortex disk and the adjustment base to provide a reset spring force.

5. The high-response scroll compression structure of the transport temporary storage refrigeration unit as described in claim 4, characterized in that: The volute teeth of the stationary and moving volutes adopt a modified involute profile, with a base circle radius of 6-8 mm, a tooth height of 20-26 mm, and a dynamic adjustment margin of 0.02-0.05 mm reserved at the tooth tip.

6. The high-response scroll compression structure of the transport temporary storage refrigeration unit as described in claim 5, characterized in that: The tooth tip surfaces of the stationary and moving vortex disks are provided with a titanium nitride wear-resistant coating with a coating thickness of 2-5 μm.

7. The high-response scroll compression structure of the transport temporary storage refrigeration unit as described in claim 4, characterized in that: The electromagnetic actuator has a response time of ≤0.5 seconds, a rated thrust of 500-800N, and a displacement accuracy of 0.001-0.005mm.

8. The high-response scroll compression structure of the transport temporary storage refrigeration unit as described in claim 7, characterized in that: The vortex teeth of the stationary and moving vortex disks adopt a combination of involute and arc profiles.

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