Refrigeration structure of intelligent cabinet body and control system thereof

Abstract

The invention discloses a refrigeration structure of an intelligent cabinet and a control system thereof, the refrigeration structure comprises a shell, an access door is assembled on the shell, and a compressor is arranged on the inner side of the access door; a storage groove is formed in the shell, the storage groove is connected with the bottom of the shell, and a heat exchange base is arranged at the bottom of the shell; the invention relates to the technical field of refrigeration cabinet monitoring, efficient operation and convenient maintenance of refrigeration equipment are achieved through intelligent monitoring, a modular structure and cooperative control, a refrigeration heat exchange assembly is connected with an elastic seal through a quick disassembly and assembly connector, local replacement is supported, the maintenance cost is reduced, and the service life of the refrigeration equipment is prolonged. The working modes of the evaporator and the radiator are accurately regulated and controlled, the high-frequency micro-vibration technology of the vibration exciter is combined, the defrosting efficiency and refrigeration uniformity are remarkably improved, faults are automatically positioned, operation parameters are optimized, and long-term stability of equipment is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration cabinet monitoring, and in particular to a refrigeration structure of an intelligent cabinet and a control system thereof. Background Art

[0002] With the development of society and people's growing material needs, the demand for transportation capacity in modern society has grown unprecedentedly. In the process of logistics transportation and production use, some products cannot be stored at room temperature, which has given rise to the demand for insulation equipment.

[0003] In order to facilitate the storage and use of refrigerated items, various refrigeration cabinets (including refrigerators) are undoubtedly the most common insulation equipment. Their outstanding feature is that they convert electricity into heat exchange energy, absorb the heat of the stored items to achieve the effect of cooling or maintaining a constant temperature. For example, fresh food or medicines are often stored in refrigeration cabinets.

[0004] The current refrigeration cabinet structure is mainly divided into several parts: cabinet, refrigeration system and electrical system. During application, the cabinet is used as a space for storing materials. The refrigeration system is installed on the cabinet structure or extends into the cabinet. The electrical system is used to control the refrigeration system to cool the stored materials. The current refrigeration system of the refrigeration cabinet is usually composed of a compressor, condenser, evaporator and dry filter.

[0005] Modern refrigeration equipment is beginning to develop towards miniaturization, intelligence and energy saving. At present, the cabinet structure of refrigeration cabinets is mainly a rectangular box with built-in insulation materials, and the evaporator and condenser are arranged on the inner and outer sides of the partition respectively. This structure cannot be quickly replaced during use. When the evaporator or condenser pipeline is damaged, the disassembly and inspection are cumbersome. Secondly, the cabinet structure at this stage mostly adopts pipe connection and laying for heat exchange, so it is not easy to repair in case of leakage, resulting in the need to replace the entire machine.

[0006] Moreover, since some items contain a lot of moisture, during the freezing and refrigeration process, the moisture will cause the humidity inside the cabinet to increase, which will then cause ice to form inside the cabinet, which will not only reduce the heat absorption capacity of the evaporator and the heat exchange efficiency, but also the presence of the frost layer will easily affect the detection accuracy and effect of the temperature sensor, resulting in poor cooling effect. At present, the thermal insulation cabinet can only be automatically opened and then defrosted, which seriously affects the working efficiency of the thermal insulation cabinet. In view of this, in-depth research was conducted on the above-mentioned problems, which led to the present case. Summary of the invention

[0007] In view of the deficiencies of the prior art, the present invention provides a refrigeration structure of an intelligent cabinet and a control system thereof, which solve the existing background technology problems.

[0008] To achieve the above object, the present invention is realized through the following technical solutions: A refrigeration structure of an intelligent cabinet body, including a housing, an inspection door is assembled on the housing, and a compressor is arranged inside the inspection door;

[0009] A storage tank is arranged inside the housing, the storage tank is connected to the bottom of the housing, a heat exchange base is arranged at the bottom of the housing, several refrigeration and heat exchange components are annularly arranged around the storage tank, several of the refrigeration and heat exchange components are communicated with the heat exchange base, the heat exchange base is connected to the compressor, a back groove is opened on the back of the housing, and a strengthening heat dissipation plate is fixed on the back groove by several screws, and a condenser is arranged on the strengthening heat dissipation plate;

[0010] The heat exchange base includes an isolation plate, the isolation plate is connected to the bottom of the storage tank, connecting pipes are arranged at the bottom of the isolation plate, a control valve seat is arranged on one side of the compressor, the control valve seat is connected to the connecting pipes, several connecting components are arranged on the isolation plate, and several of the connecting components are connected to several refrigeration and heat exchange components;

[0011] The number of several of the refrigeration and heat exchange components should be at least four, and the number of the connecting pipes corresponds to the number of evaporators and radiators in several of the refrigeration and heat exchange components;

[0012] The refrigeration and heat exchange component includes a fixed seat, there is an annular space between the housing and the storage tank, the fixed seat is inserted between the storage tank and the housing, two pairs of mounting members are arranged at the four corners inside the housing, both sides of the fixed seat are respectively connected to the two pairs of mounting members, an evaporator and a radiator are arranged on the refrigeration and heat exchange component, the evaporator and the radiator are respectively connected to the connecting pipes, and a deicing component is also arranged on the fixed seat, and the deicing component is used to remove the ice layer on the storage tank;

[0013] The mounting member includes a mounting corner post connecting the four corners of the housing and the storage tank, two pairs of guide grooves are opened on both sides of the mounting corner post, the two pairs of guide grooves penetrate the top surface of the mounting corner post, a pair of guide blocks are arranged on both sides of the fixed seat, the guide blocks are assembled in the guide grooves, elastic buckles are arranged on the guide grooves, limit grooves are arranged on the guide blocks to cooperate with the elastic buckles, and a closed ring seat is installed on the top of the housing, and the closed ring seat closes the top surface of the annular space between the storage tank and the housing;

[0014] The condenser is connected to the compressor, the condenser and the evaporator form a path through the control valve seat, and a switching valve is arranged on the control valve seat.

[0015] The housing is a rectangular cavity shell made of rolled steel plates, the housing is connected to the outer periphery of the isolation plate, and the isolation plate and the housing are supported by several strengthening frames;

[0016] A closed cabinet door is hinged to the top of the housing. Sealing rubber strips are distributed around the closed cabinet door, and the sealing rubber strips are sealed with the top opening of the housing. Two pairs of rollers are provided at the four corners of the housing. An inspection slot is provided at the bottom of the housing, and an inspection door is assembled on the inspection slot. An installation base is provided outside the housing, and a control panel is provided on the installation base. A number of detection points are provided in the storage tank, and a number of temperature sensors are assembled on the number of detection points. The number of temperature sensors is connected to the control panel.

[0017] The control valve seat is respectively connected to the inlet and the outlet of the compressor. A joint is provided on the control valve seat. An interface is provided at the end of the connecting pipe, and the interface is threadedly connected to the joint.

[0018] The inspection door is a cavity box body with a rectangular structure. A pair of buckles are provided at the end of the inspection door, and a pair of clamping grooves and a pair of locking buckles are provided on the inspection slot for connection.

[0019] The radiator and the compressor form a passage. The switching valve can switch the operation of two groups of passages. The radiator and the evaporator are arranged staggeredly. The radiator and the evaporator are both continuous wavy troughs with an S-shaped structure. The cross-sections of the radiator and the evaporator are both trapezoidal structures, and the radiator and the evaporator are arranged in parallel.

[0020] The condenser is an S-shaped trough protruding from the back panel, and a number of enhanced heat exchange fins extend integrally in a linear array on the back panel.

[0021] A pair of flux detectors are respectively provided at the head and tail ends of the condenser, the radiator and the evaporator;

[0022] The flux detector includes a detection seat. A detection slot is provided on the detection seat. A fluid detection impeller is provided inside the detection slot. A transmission shaft is connected to the fluid detection impeller, and a micro encoder is connected to the end of the transmission shaft. The control panel is connected to the micro encoder.

[0023] The deicing assembly includes a number of excitation slots. A number of excitation slots are arranged in a matrix on the side wall of the fixed seat. A number of exciters are assembled on the number of excitation slots. A number of exciters located in the same vertical direction are connected to an excitation control board on one side. The excitation control board is a plate with a rectangular structure. A number of electromagnets are provided on the excitation control board, and the number of electromagnets is arranged corresponding to the number of exciters;

[0024] The vibrator includes a telescopic rod, and an excitation block is connected to the end of the telescopic rod. A protective sleeve is arranged on the excitation block. The protective sleeve is made of silica gel material. The end of the protective sleeve is a plane and closes the port of the excitation groove. A return spring is arranged on one side of the excitation block, and a traction magnet is arranged on the excitation block, and the traction magnet corresponds to the electromagnet.

[0025] The connection component includes a mounting seat, the mounting seat extends from the isolation plate, the bottom of the mounting seat is connected to the connecting pipe, a socket is opened on the mounting seat, and insertion pipes are correspondingly arranged at the bottom of the fixing seat for connecting the radiator and the evaporator. The insertion pipes are inserted into the socket, and a sealing ring gasket with an annular structure is arranged in the socket.

[0026] A refrigeration control system for an intelligent cabinet includes the following modules:

[0027] Core control module: Adopting a PLC controller, integrated in the control panel, receiving real-time data of the digital temperature sensor in the storage tank, analyzing the three-dimensional temperature field distribution, and executing preset logic to control the actions of the compressor, switching valve and excitation component;

[0028] Temperature monitoring module: Digital temperature sensors distributed at multiple detection points on the inner wall of the storage tank transmit temperature signals to the control panel through shielded cables. When the detected regional temperature difference ΔT≥5°C and lasts for 10 minutes, the defrosting program is triggered;

[0029] Refrigerant circulation control module: Including a control valve seat and a switching valve, switching the refrigeration and defrosting mode passages through solenoid valves;

[0030] Refrigeration mode: The refrigerant flow direction is from the compressor to the condenser to the evaporator to the control valve seat and back, and the evaporator absorbs the heat of the storage tank;

[0031] Defrosting mode: The switching valve closes the evaporator passage and guides the high-temperature refrigerant directly to the radiator to heat the inner wall of the storage tank;

[0032] Flux detector: Monitoring the refrigerant flow rates of the condenser, radiator and evaporator, triggering an audible and visual alarm when the flow rate deviation > 15%;

[0033] Compressor management module: A fully enclosed scroll refrigeration compressor, controlled by the PLC for starting, stopping and operating frequency, adapted to the R134a environmental refrigerant, connected to the control valve seat through a flange joint, and driving the refrigerant circulation by pressure;

[0034] Defrosting execution module: Integrating a PWM voltage regulating chip through an excitation control board, programming to set the excitation amplitude and frequency, driving the electromagnet to generate periodic suction force, the electromagnet pulling the excitation block to reciprocate at a frequency of 5 Hz and a stroke of ±3 mm, and transmitting micro-vibrations to the inner wall of the storage tank through the silica gel protective sleeve to accelerate the ice layer peeling;

[0035] Heat dissipation and sealing protection module: It includes a condenser and a closed cabinet door. The natural convection heat dissipation efficiency is improved through a parallel flow microchannel structure and enhanced heat exchange fins. The closed cabinet door uses a sealing strip made of ethylene propylene diene monomer (EPDM) rubber combined with a slope-shaped edge structure to ensure that the airtightness reaches IP54 level and reduce cold leakage.

[0036] Abnormal handling and alarm module: When the refrigerant flow is abnormal or the seal fails, the flux detector sends a signal to the PLC, triggering an audible and visual alarm and shutdown protection. The control panel displays the fault code, guiding maintenance personnel to quickly replace the damaged refrigeration heat exchange component or sealing gasket through the maintenance door.

[0037] After the control panel sets the target temperature, the PLC starts the compressor. The refrigerant enters the evaporator after dissipating heat in the condenser and absorbs the heat in the storage tank. The digital temperature sensor continuously monitors the temperature of each area, and the flux detector verifies the stability of the refrigerant flow. When the temperature difference ΔT in a certain area ≥ 5°C lasts for 10 minutes, the PLC switches the control valve seat path to the defrosting mode, and the high-temperature refrigerant enters the radiator to heat the inner wall. At the same time, the vibration control board is activated, and the electromagnet drives the vibrator to vibrate with preset parameters, combining with thermal defrosting to improve the efficiency.

[0038] Beneficial effects

[0039] The present invention provides a refrigeration structure and its control system for an intelligent cabinet. It has the following beneficial effects: Through intelligent monitoring, modular structure and coordinated control, the refrigeration system realizes the efficient operation and convenient maintenance of refrigeration equipment. The refrigeration heat exchange components are connected by quick-disassembly interfaces and elastic seals, supporting local replacement to reduce maintenance costs. The refrigerant circulation system is linked by electromagnetic valves and flux detectors to accurately regulate the working modes of the evaporator and radiator. Combining with the high-frequency micro-vibration technology of the vibrator, the defrosting efficiency and refrigeration uniformity are significantly improved. The intelligent control system integrates three-dimensional temperature field monitoring and flow feedback, automatically locates faults and optimizes operation parameters, ensuring the long-term stability of the equipment. The overall solution takes into account high reliability, low maintenance costs and fast response capabilities, and is suitable for high-demand scenarios such as medical treatment and cold chain. Specifically, it has the following advantages:

[0040] 1. Modular and quick replacement: The refrigeration heat exchange components are combined with the guide groove through elastic buckles and the socket-type fluororubber sealing interface to realize the independent disassembly and replacement of the single-side evaporator or radiator, reducing the maintenance cost and downtime of local faults.

[0041] 2. Efficient coordinated defrosting: The electromagnetic valve switches the refrigerant path and is linked with the vibrator. The high-temperature refrigerant directly passes through the radiator to heat the inner wall. At the same time, the vibrator vibrates at 5 Hz to peel off the ice layer. The two modes cooperate to shorten the defrosting cycle and reduce energy consumption.

[0042] 3. Precise refrigerant regulation: The flux detector monitors the refrigerant flow rate in real time, and combines with the PLC to dynamically adjust the compressor frequency and the opening of the control valve to ensure that the heat exchange efficiency of the evaporator and the condenser matches the temperature field requirements of the storage tank.

[0043] 4. Multi-stage sealing against leakage: The connecting component uses a 45° conical surface to compress the stainless steel insertion tube and the fluororubber ring gasket, and cooperates with the ±2mm stroke compensation deformation of the elastic buckle to ensure that the refrigerant passage still remains leak-free after frequent disassembly and assembly.

[0044] 5. Intelligent diagnosis and maintenance: The three-dimensional temperature field data is linked with the abnormal threshold of the refrigerant flow rate, automatically locates the fault area and guides the replacement of the corresponding refrigeration and heat exchange components, reducing manual troubleshooting and the loss of the whole machine scrapping. Brief Description of the Drawings

[0045] Figure 1 It is the first three-dimensional structure schematic diagram of the refrigeration structure and its control system of an intelligent cabinet described in the present invention.

[0046] Figure 2 It is the explosion structure schematic diagram of the refrigeration structure and its control system of an intelligent cabinet described in the present invention.

[0047] Figure 3 It is the second three-dimensional structure schematic diagram of the refrigeration structure and its control system of an intelligent cabinet described in the present invention.

[0048] Figure 4 It is the structure schematic diagram of the refrigeration and heat exchange components of the refrigeration structure and its control system of an intelligent cabinet described in the present invention.

[0049] Figure 5 It is the sectional structure schematic diagram of the refrigeration structure and its control system of an intelligent cabinet described in the present invention.

[0050] Figure 6 It is the structure schematic diagram of the enhanced heat dissipation plate of the refrigeration structure and its control system of an intelligent cabinet described in the present invention.

[0051] Figure 7 It is the partial sectional structure schematic diagram of the refrigeration structure and its control system of an intelligent cabinet described in the present invention.

[0052] Figure 8 It is the structure schematic diagram of the control valve seat of the refrigeration structure and its control system of an intelligent cabinet described in the present invention.

[0053] Figure 9 It is the structure schematic diagram of the flux detector of the refrigeration structure and its control system of an intelligent cabinet described in the present invention.

[0054] Figure 10 It is the structure schematic diagram of the vibrator of the refrigeration structure and its control system of an intelligent cabinet described in the present invention.

[0055] Figure 11 The refrigeration structure and its control system of an intelligent cabinet body according to the present invention Figure 6 Partial enlarged structural schematic diagram

[0056] In the figure: 1, outer shell; 2, compressor; 3, storage tank; 4, heat exchange base; 5, enhanced heat dissipation plate; 6, connection component; 7, refrigeration heat exchange component; 8, flux detector; 9, deicing component; 11, roller; 12, maintenance door; 13, enclosed cabinet door; 14, control panel; 41, isolation plate; 42, connecting pipe; 43, control valve seat; 51, condenser; 52, enhanced heat exchange fins; 61, mounting seat; 62, socket; 63, insertion pipe; 64, sealing ring gasket; 71, fixed seat; 72, mounting angle column; 73, guide groove; 74, guide block; 75, enclosed ring seat; 76, radiator; 77, evaporator; 81, detection seat; 82, fluid detection impeller; 83, micro encoder; 91, excitation groove; 92, exciter; 93, excitation control board; 94, electromagnet; 431, switching valve; 432, joint; 433, interface; 921, telescopic rod; 922, excitation block; 923, protective sleeve; 924, return spring; 925, traction magnetic block Specific embodiments

[0057] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention

[0058] Please refer to Figures 1-11 , the present invention provides an implementation solution: In the application process of modern refrigeration equipment, the refrigeration cabinet body structure is mainly a rectangular box body, with heat insulation materials built in the box body, and the evaporator 77 and the condenser 51 are respectively arranged on the inside and outside of the partition layer. Firstly, this structure cannot be quickly disassembled and replaced during application. When the pipelines of the evaporator 77 or the condenser 51 are damaged, the disassembly and inspection are cumbersome. Secondly, at present, most of the cabinet body structures use pipeline connection and laying for heat exchange, so it is not easy to repair in case of leakage, resulting in the need to replace the whole machine. Moreover, at present, the refrigeration box body will frost on the inner wall during application, resulting in inaccurate detection results and low refrigeration efficiency. The conventional defrosting methods are inefficient and inconvenient to use

[0059] Example 1: To address the above problems, according to the attached drawings of the specification Figures 1-11It can be known that the present application discloses a refrigeration structure for an intelligent cabinet, including a housing 1. The housing 1 is a rectangular steel structure shell, rolled from cold-rolled steel plates and treated with electrostatic spraying on the surface to enhance the anti-corrosion performance. The housing 1 is the supporting main body of the device. Two pairs of rollers 11 provided at the four corners of the housing 1 make it more convenient to move the cabinet, with a single-wheel load-bearing capacity of 200 kg. Furthermore, a maintenance slot is provided at the bottom of the housing 1, and a maintenance door 12 is assembled on the maintenance slot. The maintenance door 12 and the maintenance slot are of a split structure. A pair of buckles are provided at the end of the maintenance door 12, and the buckles are locked with the lock on the maintenance slot through spring pins, which is convenient for quickly maintaining the compressor 2 and the pipeline system. A compressor 2 is provided inside the maintenance door 12. The compressor 2 is a fully enclosed scroll refrigeration compressor 2, fixed to the inside of the maintenance door 12 by bolts, and is adapted to the R134a environmental protection refrigerant. When there is a fault in the cabinet, the internal equipment can be maintained by opening the maintenance door 12.

[0060] According to the attached drawings of the specification Figures 1-3 It can be known that a storage tank 3 is provided inside the above-mentioned housing 1. The storage tank 3 is connected to the bottom of the housing 1. The storage tank 3 is a 304 stainless steel inner tank, which is used as a storage space for storing various cold fresh products, medicines, etc. during application. A vacuum board is bonded to the bottom through epoxy resin glue as an insulating board 41, with a thermal conductivity coefficient ≤ 0.004 W / m·K, to avoid cold leakage. Furthermore, four groups of refrigeration heat exchange components 7 are provided around the storage tank 3. The four groups of refrigeration heat exchange components 7 wrap and contact the storage tank 3 omni-directionally. Each group of refrigeration heat exchange components 7 includes an evaporator 77 and a radiator 76. Among them, the evaporator 77 uses a capillary tube to absorb the heat of the materials in the storage tank 3 with the refrigerant, thereby realizing the refrigeration function. The radiator 76 works in the defrosting mode, and the heat is dissipated into the storage tank 3 through the radiator 76 to heat the inner wall of the storage tank 3, so that the ice layer attached to the inner wall of the storage tank 3 can be quickly thawed, improving the defrosting efficiency. The refrigeration heat exchange components 7 are connected to the heat exchange base 4. A connecting pipe 42 is preset inside the heat exchange base 4, and is connected to the radiator 76 and the evaporator 77 through a connecting component 6 penetrating the insulating board 41. The radiator 76 and the evaporator 77 are arranged staggeredly. Both the radiator 76 and the evaporator 77 are continuous wavy troughs with an S-shaped structure, and the cross-section is trapezoidal to enhance the turbulent flow effect.

[0061] After the cabinet has been running for a period of time, frost will form on the inner wall of the storage tank 3. In order to defrost more efficiently and conveniently, the inlet and outlet of the compressor 2 are connected to the control valve seat 43 through flange joints 432. A switching valve 431 is provided on the control valve seat 43. The switching valve 431 is an electromagnetic valve to realize the switching between the refrigeration and defrosting modes.

[0062] According to the attached drawings of the specification Figures 1-4It can be seen that a back groove is provided on the back of the above-mentioned housing 1. The enhanced heat dissipation plate 5 is fixed to the back groove by a number of screws. The enhanced heat dissipation plate 5 is an extruded profile of 6063 aluminum alloy, with a surface anodized treatment. The installed condenser 51 adopts a parallel flow microchannel structure, with a heat dissipation area of 2.5 m², and is fastened to the back groove by four M6 stainless steel screws. The condenser 51 forms a passage with the compressor 2 and the evaporator 77 through the control valve seat 43. The compressor 2 converts the refrigerant into high-pressure and high-temperature gas. Under the action of pressure, the refrigerant dissipates heat outward through the condenser 51. A number of enhanced heat exchange fins 52 extend linearly and integrally on the back plate, and the natural convection heat dissipation efficiency is improved by increasing the surface area. After heat exchange, the refrigerant flows back to one side of the control valve seat 43 and is introduced into the evaporator 77 through the control valve seat 43. The condenser 51 absorbs the heat in the storage tank 3 through the evaporator 77 to achieve the refrigeration effect.

[0063] According to the attached instructions Figures 1-5 It can be seen that a closed cabinet door 13 is hinged to the top of the above-mentioned housing 1. Sealing rubber strips are distributed around the closed cabinet door 13. The closed cabinet door 13 adopts double-layer hollow toughened glass with a Low-E coating inside, and the heat insulation coefficient K ≤ 1.2 W / m²·K. A lifting handle is provided on one side of the closed cabinet door 13 to facilitate the opening and closing of the cabinet body. The sealing rubber strip is made of ethylene propylene diene monomer (EPDM) rubber and is engaged with the edge of the cabinet body through a sloping edge structure to ensure that the airtightness reaches IP54 level and prevent the leakage of cold.

[0064] According to the attached instructions Figures 1-6 It can be seen that the above-mentioned heat exchange base 4 includes an isolation plate 41. The isolation plate 41 is connected to the bottom of the storage tank 3. The isolation plate 41 avoids the overflow of cold through the isolation function. Connecting pipes 42 are arranged at the bottom of the isolation plate 41. The connecting pipes 42 are made of copper and are connected to the flange joint 432 of the control valve seat 43 through a flaring process to realize the flow of the refrigerant. A control valve seat 43 is provided on one side of the compressor 2. The control valve seat 43 is connected to the connecting pipe 42. A number of connecting components 6 are arranged on the isolation plate 41. The number of connecting components 6 is connected to a number of refrigeration and heat exchange components 7 to realize the construction of the refrigerant channel, so that a number of refrigeration and heat exchange components 7 can be quickly disassembled and assembled, improving the replaceability of the equipment. When one side of the refrigeration and heat exchange component 7 has a poor working effect or leaks and is damaged, it can be directly replaced, reducing the equipment replacement cost and being more environmentally friendly.

[0065] Specifically, according to the attached instructions Figures 1-7 It can be seen that the above-mentioned connecting component 6 includes a mounting seat 61. The mounting seat 61 extends from the isolation plate 41. The bottom of the mounting seat 61 is connected to the connecting pipe 42. A fluororubber sealing ring gasket 64 is arranged in the socket 62. Stainless steel insertion pipes 63 are respectively arranged at the inlets and outlets of the evaporator 77 and the radiator 76. The socket groove is pressed against the stainless steel insertion pipe 63 of the insertion pipe 63 through a 45° conical surface to ensure zero leakage.

[0066] According to the attached instructions Figures 1-8 it can be known that the number of several refrigeration and heat exchange components 7 should be at least four. The number of connecting pipes 42 corresponds to the number of evaporators 77 and radiators 76 in several refrigeration and heat exchange components 7. The fixed seat 71 of each group of refrigeration and heat exchange components 7 is injection-molded with glass fiber-reinforced nylon and lined with a heat-insulating cotton layer. The two side guide blocks 74 are matched with the elastic buckles of the installation member, and the elastic stroke is ±2 mm to achieve quick disassembly and assembly. The installation member is composed of a connecting shell 1 and installation corner columns 72 at the four corners of the storage tank 3. Guide grooves 73 are cut on both sides of the installation corner columns 72, and PTFE self-lubricating bushings are embedded. A closed ring seat 75 is installed on the top of the shell 1. The closed ring seat 75 is inserted into the jack at the top of the installation angle seat through a pin to fill the top of the annular space and further block the cold bridge effect.

[0067] An installation base is arranged outside the shell 1, and a control panel 14 is arranged on the installation base. The control panel 14 uses a 7-inch touch screen and supports the Modbus RTU communication protocol to display the three-dimensional temperature field data in the storage tank 3 in real time. A number of detection points arranged in the storage tank 3 are equipped with digital temperature sensors, which are connected to the control panel 14 through shielded cables. When the temperature difference ΔT≥5°C lasts for 10 minutes, the PLC triggers the defrosting program, switches the passage of the control valve seat 43 and starts the ice removal component 9 to vibrate. The high-temperature refrigerant directly passes through the radiator 76 to melt the frost layer. At this time, the corresponding area refrigeration channel is in a closed state. During the defrosting operation, the radiator 76 and the compressor 2 form a passage, and the switching valve 431 can switch the operation of the two groups of passages.

[0068] According to the attached instructions Figures 1-9 it can be known that flux detectors 8 are respectively arranged at the head and tail ends of the condenser 51, the radiator 76 and the evaporator 77. The fluid detection impeller 82 of the flux detector 8 is made of PPS material, and the resolution of the micro encoder 83 is 1000P / R. When the refrigerant passes through the condenser 51, the radiator 76 and the evaporator 77, since the fluid detection impeller 82 is built into the pipeline, the refrigerant will drive the fluid detection impeller 82 to rotate when passing through, and then drive the micro encoder 83 to rotate. The micro encoder 83 cooperates with the counter to obtain the rotation speed of the fluid detection impeller 82, and judges the passing amount of the fluid according to the rotation speed height to realize real-time monitoring of the refrigerant flow. When the deviation > 15%, it indicates that the refrigeration effect becomes poor or there is a leak, triggering an audible and visual alarm.

[0069] According to the attached instructions Figures 1-10 it can be known that the above-mentioned refrigeration and heat exchange component 7 includes a fixed seat 71, the annular space between the shell 1 and the storage tank 3. The fixed seat 71 is inserted between the storage tank 3 and the shell 1. The ice removal component 9 arranged on the fixed seat 71 vibrates the inner wall of the storage tank 3 through the excitation action, and uses micro-vibration to accelerate the shedding of the ice layer;

[0070] Specifically, the de-icing assembly 9 includes several vibration excitation grooves 91. An exciter 92 is assembled in each vibration excitation groove 91. On one side of several exciters 92 located in the same vertical direction, there is a vibration excitation control board 93 connected. The vibration excitation control board 93 is a rectangular plate. There are several electromagnets 94 arranged on the vibration excitation control board 93. The several electromagnets 94 are arranged corresponding to the several exciters 92. After the electromagnets 94 are powered on, they generate a suction force of 20 N. The electromagnets 94 correspond to the traction magnets on one side of the vibration excitation block 922, and traction is applied to the vibration excitation block 922 to reciprocate at a frequency of 5 Hz with a stroke of ±3 mm. The return spring 924 plays an auxiliary role during the vibration excitation process. The silica gel protective sleeve 923 at the end of the vibration excitation block 922 transmits the vibration to the inner wall of the storage tank 3 to peel off the ice layer. The vibration excitation control board 93 integrates a PWM voltage regulating chip, and the vibration amplitude and frequency can be programmably set.

[0071] Embodiment 2: To adapt to the operation of the above device, the present application also discloses a refrigeration control system for an intelligent cabinet, including the following modules:

[0072] Core control module: Adopts a PLC controller, integrated in the control panel, receives real-time data from the digital temperature sensor in the storage tank, analyzes the three-dimensional temperature field distribution, and executes preset logic to control the compressor, switching valve, and the action of the vibration excitation assembly;

[0073] Temperature monitoring module: Digital temperature sensors distributed at multiple detection points on the inner wall of the storage tank transmit the temperature signal to the control panel through a shielded cable. When the detected regional temperature difference ΔT≥5°C and lasts for 10 minutes, the defrosting program is triggered;

[0074] Refrigerant circulation control module: Includes a control valve seat and a switching valve, and switches the refrigerant and defrosting mode passages through an electromagnetic valve;

[0075] Refrigeration mode: The refrigerant flow direction is from the compressor to the condenser to the evaporator to the control valve seat and back, and the evaporator absorbs the heat of the storage tank;

[0076] Defrosting mode: The switching valve closes the evaporator passage and guides the high-temperature refrigerant directly to the radiator to heat the inner wall of the storage tank;

[0077] Flux detector: Monitors the refrigerant flow rates of the condenser, radiator, and evaporator. When the flow rate deviation >15%, an audible and visual alarm is triggered;

[0078] Compressor management module: A fully enclosed scroll refrigeration compressor, the start-stop and operating frequency are controlled by the PLC, adapted to the R134a environmental refrigerant, connected to the control valve seat through a flange joint, and the refrigerant is circulated by pressure drive;

[0079] Defrosting Execution Module: By integrating a PWM voltage regulating chip through a vibration excitation control board, programming and setting the vibration excitation amplitude and frequency, driving the electromagnet to generate periodic suction force, the electromagnet pulls the vibration excitation block to reciprocate at a frequency of 5 Hz and a stroke of ±3 mm, and transfers the micro-vibration to the inner wall of the storage tank through a silica gel protective sleeve to accelerate the ice layer peeling;

[0080] Heat Dissipation and Sealing Assurance Module: It includes a condenser and a closed cabinet door: improving the natural convection heat dissipation efficiency through a parallel flow micro-channel structure and enhanced heat exchange fins; the closed cabinet door uses a sealing strip made of ethylene propylene diene monomer (EPDM) rubber combined with a slope-shaped edge structure to ensure that the airtightness reaches IP54 level and reduce cold leakage;

[0081] Abnormal Handling and Alarm Module: When the refrigerant flow is abnormal or the seal fails, the flux detector sends a signal to the PLC, triggering an audible and visual alarm and shutting down for protection; the control panel displays the fault code, guiding maintenance personnel to quickly replace the damaged refrigeration and heat exchange components or sealing gaskets through the maintenance door;

[0082] After the control panel sets the target temperature, the PLC starts the compressor. The refrigerant enters the evaporator after dissipating heat in the condenser and absorbs the heat in the storage tank; the digital temperature sensor continuously monitors the temperature of each area, and the flux detector verifies the stability of the refrigerant flow; when the temperature difference ΔT in a certain area ≥ 5 °C lasts for 10 minutes, the PLC switches the control valve seat passage to the defrosting mode, and the high-temperature refrigerant enters the radiator to heat the inner wall; simultaneously activates the vibration excitation control board, the electromagnet drives the vibrator to vibrate with preset parameters, and combines thermal defrosting to improve the efficiency.

[0083] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A refrigeration structure of an intelligent cabinet, comprising a housing (1), wherein the housing (1) is provided with an inspection door (12), characterized in that: A compressor (2) is arranged on the inner side of the inspection door (12); A storage tank (3) is provided in the shell (1), the storage tank (3) is connected to the bottom of the shell (1), a heat exchange base (4) is provided at the bottom of the shell (1), a plurality of refrigeration heat exchange components (7) are arranged around the storage tank (3), the plurality of refrigeration heat exchange components (7) are connected to the heat exchange base (4), the heat exchange base (4) is connected to the compressor (2), a back groove is provided at the back of the shell (1), a reinforced heat dissipation plate (5) is fixed to the back groove by a plurality of screws, and a condenser (51) is arranged on the reinforced heat dissipation plate (5); The heat exchange base (4) comprises an isolation plate (41), the isolation plate (41) is connected to the bottom of the storage tank (3), a connecting pipe (42) is arranged at the bottom of the isolation plate (41), a control valve seat (43) is provided on one side of the compressor (2), the control valve seat (43) is connected to the connecting pipe (42), a plurality of connecting components (6) are provided on the isolation plate (41), and a plurality of the connecting components (6) are connected to a plurality of refrigeration heat exchange components (7); The refrigeration heat exchange component (7) comprises a fixing seat (71), an annular space is formed between the shell (1) and the storage tank (3), the fixing seat (71) is inserted between the storage tank (3) and the shell (1), two pairs of mounting components are arranged at the four inner corners of the shell (1), and the two sides of the fixing seat (71) are respectively connected to the two pairs of mounting components. The refrigeration heat exchange component (7) is provided with an evaporator (77) and a radiator (76), and the evaporator (77) and the radiator (76) are respectively connected to the connecting pipe (42). The fixing seat (71) is also provided with a deicing component (9), and the deicing component (9) is used to remove ice from the storage tank (3); The condenser (51) is connected to the compressor (2), and the condenser (51) forms a passage with the evaporator (77) via a control valve seat (43). A switching valve (431) is provided on the control valve seat (43).

2. The refrigeration structure of a smart cabinet according to claim 1, characterized in that: The outer shell (1) is a hollow shell with a rectangular structure and is formed by rolling a steel plate. The outer shell (1) is connected to the outer periphery of the isolation plate (41). The isolation plate (41) and the outer shell (1) are supported by a plurality of reinforcement frames. A closed cabinet door (13) is hingedly connected to the top of the shell (1), and a sealing strip is arranged around the closed cabinet door (13), and the sealing strip is sealed with the top opening of the shell (1). Two pairs of rollers (11) are arranged at the four corners of the shell (1), and an inspection groove is arranged at the bottom of the shell (1), and the inspection door (12) is installed on the inspection groove. A mounting base is arranged outside the shell (1), and a control panel (14) is arranged on the mounting base. A plurality of detection points are arranged in the storage slot (3), and a plurality of temperature sensors are installed on a plurality of the detection points, and the plurality of temperature sensors are connected to the control panel (14).

3. The refrigeration structure of a smart cabinet according to claim 2, characterized in that: The control valve seat (43) is respectively connected to the inlet and outlet of the compressor (2); a joint (432) is provided on the control valve seat (43); an interface (433) is provided at the end of the connecting pipe (42); the interface (433) is threadedly connected to the joint (432).

4. The refrigeration structure of a smart cabinet according to claim 3, characterized in that: The inspection door (12) is a plate with a rectangular structure, a pair of buckles are provided at the end of the inspection door (12), and a pair of slots connected to a pair of lock buckles are provided on the inspection slot.

5. The refrigeration structure of a smart cabinet according to claim 4, characterized in that: The radiator (76) and the compressor (2) form a passage; the radiator (76) and the evaporator (77) are arranged in a staggered manner; the radiator (76) and the evaporator (77) are both continuous wave-shaped trough bodies with an S-shaped structure; the cross-sections of the radiator (76) and the evaporator (77) are both trapezoidal structures; and the radiator (76) and the evaporator (77) are arranged in parallel.

6. The refrigeration structure of a smart cabinet according to claim 5, characterized in that: The condenser (51) is an S-shaped trough body protruding from a back plate, and a plurality of enhanced heat exchange fins (52) extend from the back plate in a linear array.

7. The refrigeration structure of a smart cabinet according to claim 6, characterized in that: A pair of flux detectors (8) are respectively provided at the head and tail ends of the condenser (51), the radiator (76), and the evaporator (77).

8. The refrigeration structure of a smart cabinet according to claim 7, characterized in that: The de-icing assembly (9) comprises a plurality of excitation grooves (91), a plurality of excitation grooves (91) are arranged in a matrix on the side wall of the fixing seat (71), a plurality of exciters (92) are mounted on the plurality of exciters (91), an excitation control plate (93) is connected to one side of the plurality of exciters (92) located in the same vertical direction, the excitation control plate (93) is a plate with a rectangular structure, a plurality of electromagnets (94) are arranged on the excitation control plate (93), and the plurality of electromagnets (94) are arranged corresponding to the plurality of exciters (92).

9. The refrigeration structure of a smart cabinet according to claim 8, characterized in that: The connection assembly (6) comprises a mounting seat (61), the mounting seat (61) extending from the isolation plate (41), the bottom of the mounting seat (61) being connected to the connection pipe (42), the mounting seat (61) being provided with a socket (62), the bottom of the fixing seat (71) being provided with a plug (63) corresponding to the connection of the radiator (76) and the evaporator (77), the plug (63) being inserted into the socket (62), and a sealing ring gasket (64) of an annular structure being provided in the socket (62).

10. A refrigeration control system for an intelligent cabinet, applied to a refrigeration structure for an intelligent cabinet as claimed in any one of claims 1 to 9, characterized in that: Includes the following modules: Core control module: adopts PLC controller, integrated in the control panel, receives real-time data from the digital temperature sensor in the storage tank, analyzes the three-dimensional temperature field distribution, and executes preset logic to control the compressor, switch valves and excitation components; Temperature monitoring module: Digital temperature sensors distributed at multiple detection points on the inner wall of the storage tank transmit temperature signals to the control panel through shielded cables. When the regional temperature difference ΔT ≥ 5°C is detected and lasts for 10 minutes, the defrost program is triggered; Refrigerant circulation control module: including control valve seat and switching valve, switching cooling and defrosting mode passage through electromagnetic valve; Refrigeration mode: The refrigerant flows from the compressor to the condenser to the evaporator and then back to the control valve seat, absorbing the heat from the storage tank through the evaporator; Defrost mode: switch the valve to close the evaporator passage, guide the high-temperature refrigerant directly to the radiator, and heat the inner wall of the storage tank; Flux detector: monitors the refrigerant flow of the condenser, radiator and evaporator, and triggers an audible and visual alarm when the flow deviation is greater than 15%; Compressor management module: Fully enclosed scroll refrigeration compressor, start and stop and operating frequency controlled by PLC, adapted to R134a environmentally friendly refrigerant, connected to the control valve seat through a flange joint, pressure-driven refrigerant circulation; Defrost execution module: The PWM voltage regulation chip is integrated through the excitation control board, and the excitation amplitude and frequency are programmed to drive the electromagnet to generate periodic suction. The electromagnet pulls the excitation block to reciprocate at a frequency of 5Hz and a stroke of ±3mm, and transmits micro-vibration to the inner wall of the storage tank through the silicone protective cover to accelerate the peeling of the ice layer; Heat dissipation and sealing guarantee module: including condenser and closed cabinet door: the natural convection heat dissipation efficiency is improved through parallel flow microchannel structure and enhanced heat exchange fins; the closed cabinet door adopts EPDM rubber material combined with a sealing strip with a sloped edge structure to ensure air tightness up to IP54 level and reduce cold leakage; Abnormal processing and alarm module: When the refrigerant flow is abnormal or the seal fails, the flux detector sends a signal to the PLC, triggering an audible and visual alarm and shutting down for protection; the control panel displays the fault code and guides maintenance personnel to quickly replace damaged refrigeration heat exchange components or sealing rings through the inspection door; After the target temperature is set on the control panel, the PLC starts the compressor, and the refrigerant enters the evaporator after dissipating heat through the condenser, absorbing heat in the storage tank; the digital temperature sensor continuously monitors the temperature of each area, and the flux detector verifies the stability of the refrigerant flow; when the temperature difference ΔT≥5℃ in a certain area lasts for 10 minutes, the PLC switches the control valve seat passage to the defrost mode, and the high-temperature refrigerant enters the radiator to heat the inner wall; the vibration control board is activated simultaneously, and the electromagnet drives the vibrator to vibrate with preset parameters, combining thermal defrosting to improve efficiency.

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