Anti-explosion hot fluorine defrosting refrigerating unit

Abstract

This application belongs to the field of refrigeration equipment technology and discloses an explosion-proof hot-refrigerant defrosting refrigeration unit, including a cabinet assembly, a dynamic evaporator assembly, an explosion-proof air inlet assembly, an explosion-proof air outlet assembly, a multi-position defrosting arm assembly, a drive ring arm assembly, and an internal drive assembly. The dynamic evaporator assembly is located at the top inside the cabinet assembly, with its two ends connected to the explosion-proof air inlet assembly and the explosion-proof air outlet assembly, respectively. The multi-position defrosting arm assembly and the drive ring arm assembly are located around the explosion-proof air outlet assembly for enclosed physical cleaning defrosting. The internal drive assembly is located at the center of the dynamic evaporator assembly and is used to trigger dynamic defrosting or dynamic heat exchange. This application achieves pressure adaptive adjustment through the explosion-proof air inlet and explosion-proof air outlet assemblies to avoid heat exchange tube rupture; through the heat exchange tube structure that can revolve and rotate, combined with physical cleaning and hot-refrigerant defrosting, the defrosting efficiency and heat exchange uniformity are improved; the internal drive assembly enhances airflow to ensure efficient heat exchange, and has the advantages of safety, reliability, and thorough defrosting.

Description

Technical Field

[0001] This application belongs to the field of refrigeration equipment technology, specifically relating to an explosion-proof hot-fluorine defrosting refrigeration unit. Background Technology

[0002] During long-term operation, frost easily forms on the evaporator surface of refrigeration units. If not removed in time, the frost layer will gradually thicken, leading to decreased heat exchange efficiency, increased energy consumption, and in severe cases, even unit shutdown. Common defrosting methods include electric defrosting, water defrosting, and hot refrigerant defrosting. Among these, hot refrigerant defrosting has the advantages of low energy consumption and fast defrosting speed, but it still has the following problems in practical applications:

[0003] First, the refrigerant pressure changes drastically when switching between cooling and defrosting modes, which can easily cause the heat exchange tubes to burst, posing a safety hazard. Second, the heat exchange tubes and fins of traditional evaporators are mostly fixed structures, resulting in uneven heat exchange. The heat exchange effects between the bottom and top layers, and between the inner and outer sides, are significantly different, affecting the overall cooling efficiency. Third, relying solely on hot refrigerant heating for defrosting results in incomplete melting of some frost layers. The residual frost will quickly solidify upon recooling, further reducing heat exchange performance. Fourth, existing defrosting devices lack physical cleaning structures and cannot actively clean the evaporator surface, resulting in limited defrosting effectiveness.

[0004] Therefore, it is necessary to develop an explosion-proof hot-fluorine defrosting refrigeration unit that can achieve adaptive pressure regulation, dynamic uniform heat exchange, and physical cleaning defrosting to solve the above problems. Summary of the Invention

[0005] To address the problems mentioned in the background technology, an explosion-proof air inlet assembly and an explosion-proof air outlet assembly are installed at both ends of the dynamic evaporator assembly to adaptively buffer and adjust pressure fluctuations during the switching between cooling and defrosting modes. The heat exchange tubes are configured to rotate and revolve, enabling dynamic repositioning and inward / outward rotation control of the heat exchange tubes and fins. Multiple defrosting arm assemblies and drive ring arm assemblies are installed around the explosion-proof air outlet assembly to perform enclosed physical cleaning and defrosting of the outer wall of the heat exchange tubes. The internal drive assembly performs forced convection acceleration of airflow, thereby achieving a synergistic process of dynamic uniform heat exchange and efficient defrosting while ensuring explosion-proof safety.

[0006] To achieve the above objectives, this application provides the following technical solution: an explosion-proof hot-flecked defrosting refrigeration unit, including a cabinet assembly, and further comprising:

[0007] The dynamic evaporator assembly is located at the top inside the cabinet assembly and is used for heat absorption during cooling or heat release during defrosting.

[0008] The explosion-proof air inlet assembly and the explosion-proof air outlet assembly are located at both ends of the dynamic evaporator assembly. Freon refrigerant enters the dynamic evaporator assembly from one end through the explosion-proof air inlet assembly, and the Freon refrigerant after heat exchange is discharged from the explosion-proof air outlet assembly at the other end of the dynamic evaporator assembly.

[0009] Multiple defrosting arm assemblies are set around the explosion-proof vent assembly and are used to perform enclosed physical cleaning and defrosting of the dynamic evaporator assembly.

[0010] The drive ring arm assembly is located inside the multi-position defrost arm assembly and is used to drive the multi-position defrost arm assembly to enclose the dynamic evaporator assembly during defrosting or to release the enclosement after defrosting.

[0011] The internal drive component is located at the center of the dynamic evaporator component and is used to trigger the dynamic evaporator component to perform dynamic defrosting during defrosting or dynamic heat exchange cooling during cooling. In cooling and defrosting modes, it forms a dynamic heat exchange state and a physical cleaning defrosting state respectively, and performs adaptive pressure adjustment through the explosion-proof air intake component and the explosion-proof air outlet component when switching modes.

[0012] Preferably, the cabinet assembly includes a cabinet, with a V-shaped hopper for receiving defrost fixedly installed in the middle of the cabinet, an expansion valve and a compressor fixedly installed at the bottom of the cabinet, a T-shaped pipe installed at the output end of the compressor, a second pipe and a first pipe fixedly installed at both ends of the T-shaped pipe, a second valve and a first valve fixedly installed on the second pipe and the first pipe respectively, and a drain pipe fixedly installed at the bottom of the V-shaped hopper; the independent control of the refrigeration circuit and the defrost circuit is realized by switching the valves, and a centralized collection and discharge channel is provided for the stripped defrost liquid.

[0013] Preferably, the explosion-proof air intake assembly includes an air cap, with a first cavity and a second cavity inside one end of the air cap, and a main ring platform fixedly installed inside the other end of the air cap. A support ring platform is rotatably installed on the main ring platform via a bearing. A toothed ring is installed on the outer side of the main ring platform and is fixed to the inner wall of the air cap via a support arm. A piston is slidably installed in the first cavity. A sliding rod that slides through the air cap is fixedly installed on one side of the piston. An end ring is fixedly installed at the end of the sliding rod away from the piston. A tensioning spring is sleeved on the sliding rod. The two ends of the tensioning spring abut against the inner wall of the air cap and the piston, respectively. The second cavity is connected to the end tube of the air cap. The air cap is fixedly installed at one end of the V-shaped hopper.

[0014] The structure of the explosion-proof venting component is the same as that of the explosion-proof inlet component. The explosion-proof venting component is fixedly installed at the other end of the V-shaped hopper, and the explosion-proof inlet component and the explosion-proof venting component are installed opposite each other. When the pressure changes suddenly, the piston moves backward to increase the cavity volume, buffer the high-pressure impact, and avoid the heat exchange tube from bursting.

[0015] Preferably, the dynamic evaporator assembly includes a first ring arm and a second ring arm. The first ring arm is fixedly mounted on the inner wall of the gas cap on the explosion-proof air inlet assembly, and the second ring arm is fixedly mounted on the inner wall of the gas cap on the explosion-proof air outlet assembly. A first disc platform is rotatably mounted on the first ring arm via a bearing, and a second disc platform is rotatably mounted on the second ring arm via a bearing. Multiple heat exchange tubes are rotatably mounted between the edge of the second disc platform and the first disc platform. Heat exchange fins are provided on the outer side of the middle tube body of the heat exchange tubes, and a toothed wheel is fixedly mounted on the outer side of one end of the heat exchange tube body. The rotation of multiple heat exchange tubes provides a structural basis for the cyclical repositioning of the bottom and top heat exchange tubes and the inward and outward flipping of the fins.

[0016] Preferably, the multi-position defrosting arm assembly includes a defrosting ring tube arm, which is sleeved and fixed on the outer wall of the explosion-proof venting assembly. Multiple sliding grooves are formed on one end face of the defrosting ring tube arm, and sliding blocks are slidably disposed within the sliding grooves. Cleaning arms and insert rods are fixedly disposed on both sides of the sliding blocks, respectively. A limiting crossbar is fixedly disposed at the bottom of the inner wall of the defrosting ring tube arm, and a grooved platform is slidably disposed through the limiting crossbar. A toothed crossbar and a magnetic ring are fixedly disposed on the top and one side of the grooved platform, respectively. An electromagnet and a return spring are fixedly disposed at both ends of the limiting crossbar, respectively. When the electromagnet is energized, the toothed crossbar is driven to slide by magnetic repulsion, causing the cleaning arms to synchronously move inward, thereby achieving physical cleaning of the outer wall of the heat exchange tube.

[0017] Preferably, the drive ring arm assembly includes a drive ring, which is rotatably sleeved on the outer wall of the explosion-proof venting assembly and rotatably disposed inside the defrosting ring tube arm. One end of the drive ring is fixedly provided with a ring arm platform, and the outer wall of the drive ring is fixedly provided with ring teeth. Multiple actuation grooves are provided on the ring arm platform. The linear sliding of the toothed cross arm is converted into the rotation of the drive ring, and the rotation is synchronously transmitted to multiple cleaning arms through the cooperation of the actuation grooves and the insertion rod.

[0018] Preferably, the internal drive assembly includes an internal drive tube, with its two ends fixedly mounted on the support ring of the explosion-proof air intake assembly and the support ring of the explosion-proof air outlet assembly, respectively. Multiple internal drive platforms are fixedly mounted inside the internal drive tube, and an internal drive shaft is rotatably mounted at the center of each platform. A second air slot and a first air slot are formed on the outer wall of the internal drive tube. Fan blades are fixedly mounted on the internal drive shaft, and an internal drive gear is fixedly mounted at one end of the shaft. An internal drive end rod is fixedly mounted on the side of the internal drive gear away from the shaft, and an internal drive fan blade is fixedly mounted on the side of the end rod away from the gear. The end of the internal drive shaft closest to the gear is rotatably mounted on a first disc platform via a bearing. When the refrigerant flows, the internal drive fan blades drive the internal drive gear to rotate, thereby driving the fan blades to rotate and forming forced air convection.

[0019] Preferably, the end of the heat exchange tube near the toothed wheel is rotatably mounted on the support ring platform of the explosion-proof air intake assembly via a bearing, and the end of the heat exchange tube away from the toothed wheel is rotatably mounted on the support ring platform of the explosion-proof air outlet assembly via a bearing. The internal drive gear is located between the first ring arm and the support ring platform, the internal drive fan blade is located in the second row cavity, and the internal drive end rod is rotatably connected to the support ring platform via a bearing. The internal drive gear, the toothed wheel, and the toothed ring are on the same plane, with the toothed wheel located between the internal drive gear and the toothed ring. Both sides of the toothed wheel mesh with the internal drive gear and the toothed ring, respectively. Through the three-stage meshing transmission of the internal drive gear, the toothed wheel, and the toothed ring, the heat exchange tube achieves both revolution on the toothed ring and rotation on the support ring platform.

[0020] Preferably, the outer ring teeth and the moving cross arm are on the same plane, and the outer ring teeth and the moving cross arm mesh. By pushing the grooved platform with the return spring, the magnetic ring moves closer to the electromagnet, and the ring arm platform is rotated and set inside the defrosting ring tube arm. The insertion rod is inserted into the toggle groove. When the electromagnet is de-energized, the cleaning arm is automatically reset by the return spring, realizing the enclosure release.

[0021] Preferably, multiple cleaning arms on the multi-position defrosting arm assembly surround the outside of the dynamic evaporator assembly, and multiple heat exchange tubes on the dynamic evaporator assembly surround the outside of the inner drive tube; to form an encircling cleaning layout of the cleaning arms on the heat exchange tubes and an encircling heat exchange layout of the heat exchange tubes on the inner drive tubes.

[0022] Compared with the prior art, the beneficial effects of this application are:

[0023] 1. Explosion-proof safety and adaptive pressure regulation: By installing explosion-proof inlet and outlet components at both ends of the dynamic evaporator assembly, the unit can automatically adapt to drastic changes in refrigerant pressure when switching between cooling and defrosting modes. When the pressure is too high, the piston inside the explosion-proof component moves backward to increase the cavity volume, effectively buffering high-pressure impacts and preventing the heat exchange tubes from bursting due to sudden pressure changes, significantly improving the safety and reliability of the unit under complex operating conditions.

[0024] 2. Enhanced Dynamic Heat Exchange and Defrosting Efficiency: Utilizing a rotating and revolving heat exchange tube structure, the bottom and top heat exchange tubes can be cyclically interchanged, and each heat exchange tube and its fins can automatically rotate. During cooling, this design ensures uniform contact between each heat exchange tube and the air, preventing uneven heat exchange; during defrosting, combined with hot refrigerant heating, it achieves comprehensive dynamic heat exchange, significantly improving the overall efficiency of cooling and defrosting.

[0025] 3. Synergistic effect of physical cleaning and thermal defrosting: Multiple defrosting arm assemblies and drive ring arm assemblies are installed. During thermal defrosting, multiple cleaning arms can simultaneously move inward to the outer wall of the heat exchange tubes, utilizing the tubes' own revolution and rotation to perform all-around physical cleaning. This design effectively removes residual frost after heating, preventing secondary solidification during subsequent cooling and ensuring the evaporator maintains high heat exchange performance over a long period.

[0026] 4. Enhanced airflow and heat exchange: While driving the heat exchange tubes, the internal drive assembly also rotates the fan blades inside the tubes, creating forced air convection between the outer and inner circumferences of the heat exchange tubes. This airflow circulation accelerates the heat exchange rate between the evaporator and the surrounding air, further improving the thermal response speed and energy efficiency during cooling or defrosting. Attached Figure Description

[0027] Figure 1 This is a cross-sectional view of this application;

[0028] Figure 2 This is a perspective view of the present application;

[0029] Figure 3 This is a perspective view of the cabinet components of this application;

[0030] Figure 4 This is a perspective view of the dynamic evaporator assembly of this application;

[0031] Figure 5 This is a cross-sectional view of the explosion-proof air intake assembly of this application;

[0032] Figure 6 This is a perspective view of the multiple defrosting arm components of this application;

[0033] Figure 7 This is a cross-sectional view of the multiple defrost arm assemblies of this application;

[0034] Figure 8 This is a perspective view of the drive ring arm assembly of this application;

[0035] Figure 9 This is a cross-sectional view of the internal drive component of this application;

[0036] Figure 10 This is a cross-sectional view of the dynamic evaporator assembly, explosion-proof air intake assembly, explosion-proof air outlet assembly, multi-position defrosting arm assembly, drive ring arm assembly and internal drive assembly of this application;

[0037] Explanation of reference numerals in the attached drawings: 100, cabinet assembly; 101, cabinet; 102, compressor; 103, expansion valve; 104, first valve; 105, first through pipe; 106, T-shaped pipe; 107, drain pipe; 108, second through pipe; 109, second valve; 110, V-shaped hopper; 200, dynamic evaporator assembly; 201, first tray; 202, second tray; 203, gear; 204, heat exchange tube; 205, heat exchange fin; 206, first ring arm; 207, second ring arm; 300, explosion-proof air intake assembly; 301, gas cap; 302, support arm; 303, gear ring; 304, main ring platform; 305, piston; 306, sliding rod; 307, first cavity; 308, end ring; 309, clamping spring; 310, second cavity; 311. Gas cap end pipe; 312. Support ring platform; 400. Explosion-proof gas outlet assembly; 500. Multi-position defrosting arm assembly; 501. Defrosting ring tube arm; 502. Sliding block; 503. Sliding groove; 504. Cleaning arm; 505. Insert rod; 506. Geared cross arm; 507. Electromagnet; 508. Magnetic ring; 509. Grooved platform; 510. Limiting crossbar; 511. Return spring ; 600, Drive ring arm assembly; 601, Drive ring; 602, Ring arm platform; 603, Ring external gear; 604, Actuating groove; 700, Internal drive assembly; 701, Internal drive tube; 702, Internal drive platform; 703, First air slot; 704, Second air slot; 705, Fan blade; 706, Internal drive shaft; 707, Internal drive gear; 708, Internal drive end rod; 709, Internal drive fan blade. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] See Figures 1-10 As shown, this application provides an explosion-proof hot-frozen refrigerant defrosting refrigeration unit, including a cabinet assembly 100, and further comprising:

[0040] The dynamic evaporator assembly 200 is located at the top inside the cabinet assembly 100 and is used for heat absorption during cooling or heat release during defrosting.

[0041] The explosion-proof air intake assembly 300 and the explosion-proof air outlet assembly 400 are located at both ends of the dynamic evaporator assembly 200. Freon refrigerant enters the dynamic evaporator assembly 200 from one end through the explosion-proof air intake assembly 300, and the Freon refrigerant after heat exchange is discharged from the explosion-proof air outlet assembly 400 at the other end of the dynamic evaporator assembly 200.

[0042] The multi-position defrosting arm assembly 500 is located around the explosion-proof vent assembly 400 and is used to perform enclosed physical cleaning and defrosting of the dynamic evaporator assembly 200.

[0043] The drive ring arm assembly 600 is located inside the multi-position defrost arm assembly 500 and is used to drive the multi-position defrost arm assembly 500 to enclose the dynamic evaporator assembly 200 during defrosting or to release the enclosement after defrosting.

[0044] The internal drive component 700 is located at the center of the dynamic evaporator component 200 and is used to trigger the dynamic evaporator component 200 to perform dynamic defrosting during defrosting or dynamic heat exchange refrigeration during refrigeration.

[0045] In a preferred embodiment, see [reference] Figure 3 The cabinet assembly 100 includes a cabinet 101. A V-shaped hopper 110 for receiving defrost is fixedly installed in the middle of the cabinet 101. An expansion valve 103 and a compressor 102 are fixedly installed at the bottom of the cabinet 101. A T-shaped pipe 106 is installed at the output end of the compressor 102. A second pipe 108 and a first pipe 105 are fixedly installed at both ends of the T-shaped pipe 106, respectively. A second valve 109 and a first valve 104 are fixedly installed on the second pipe 108 and the first pipe 105, respectively. A drain pipe 107 is fixedly installed at the bottom of the V-shaped hopper 110.

[0046] In a preferred embodiment, see [reference] Figure 4 The dynamic evaporator assembly 200 includes a first ring arm 206 and a second ring arm 207. The first ring arm 206 is fixedly mounted on the inner wall of the gas cap 301 on the explosion-proof air inlet assembly 300, and the second ring arm 207 is fixedly mounted on the inner wall of the gas cap 301 on the explosion-proof air outlet assembly 400. A first plate 201 is rotatably mounted on the first ring arm 206 via a bearing, and a second plate 202 is rotatably mounted on the second ring arm 207 via a bearing. Multiple heat exchange tubes 204 are rotatably mounted between the edge of the second plate 202 and the first plate 201. Heat exchange fins 205 are provided on the outer side of the middle tube of the heat exchange tube 204, and a gear 203 is fixedly mounted on the outer side of one end of the tube of the heat exchange tube 204.

[0047] In this embodiment, the end of the heat exchange tube 204 near the gear 203 is rotatably mounted on the support ring 312 of the explosion-proof air intake assembly 300 via a bearing.

[0048] In this embodiment, the end of the heat exchange tube 204 away from the gear wheel 203 is rotatably mounted on the support ring platform 312 of the explosion-proof gas outlet assembly 400 via a bearing.

[0049] In this embodiment, a plurality of heat exchange tubes 204 on the dynamic evaporator assembly 200 surround the inner drive tube 701.

[0050] In a preferred embodiment, see [reference] Figure 5 The explosion-proof air intake assembly 300 includes an air cap 301. One end of the air cap 301 has a first cavity 307 and a second cavity 310. The other end of the air cap 301 has a main ring platform 304 fixedly installed inside. A support ring platform 312 is rotatably mounted on the main ring platform 304 via a bearing. A toothed ring 303 is installed on the outer side of the main ring platform 304 and is fixed to the inner wall of the air cap 301 via a support arm 302. A piston 305 is slidably installed in the first cavity 307. A sliding rod 306 is fixedly installed on one side of the piston 305, sliding through the air cap 301. An end ring 308 is fixedly installed at the end of the sliding rod 306 away from the piston 305. A sleeve is fitted on the sliding rod 306. A tensioning spring 309 is provided, with its two ends abutting against the inner wall of the gas cap 301 and the piston 305, respectively. The second cavity 310 is connected to the gas cap end tube 311. The gas cap 301 is fixedly installed at one end of the V-shaped hopper 110. The refrigerant entering the second cavity 310 through the gas cap end tube 311 acts on the pressure-bearing surface of the piston 305. When the refrigerant pressure in the second cavity 310 increases, the refrigerant pressure pushes the piston 305 to slide into the first cavity 307 to increase the effective volume of the second cavity 310. When the refrigerant pressure in the second cavity 310 decreases, the piston 305 returns to its original position towards the second cavity 310 under the elastic force of the tensioning spring 309.

[0051] The structure of the explosion-proof venting assembly 400 is the same as that of the explosion-proof inlet assembly 300. The explosion-proof venting assembly 400 is fixedly installed at the other end of the V-shaped hopper 110, and the explosion-proof inlet assembly 300 and the explosion-proof venting assembly 400 are arranged opposite each other.

[0052] In a preferred embodiment, see [reference] Figure 6 and Figure 7 The multi-position defrosting arm assembly 500 includes a defrosting ring tube arm 501, which is sleeved and fixed on the outer wall of the explosion-proof venting assembly 400. Multiple sliding grooves 503 are provided on one end face of the defrosting ring tube arm 501. A sliding block 502 is slidably arranged in the sliding groove 503. A cleaning arm 504 and a plug rod 505 are fixedly arranged on both sides of the sliding block 502, respectively. A limiting crossbar 510 is fixedly arranged at the bottom of the inner wall of the defrosting ring tube arm 501. A grooved platform 509 is slidably arranged through the limiting crossbar 510. A toothed crossbar 506 and a magnetic ring 508 are fixedly arranged on the top and one side of the grooved platform 509, respectively. An electromagnet 507 and a return spring 511 are fixedly arranged at both ends of the limiting crossbar 510, respectively. The sliding groove 503 extends radially along the defrosting ring tube arm 501.

[0053] In this embodiment, a plurality of cleaning arms 504 on the multi-position defrosting arm assembly 500 surround the exterior of the dynamic evaporator assembly 200.

[0054] In this embodiment, the electromagnet 507 generates a magnetic repulsion force with the magnetic ring 508 after being energized.

[0055] In this embodiment, the cleaning arm 504 is provided with a flexible scraper or brush on the side facing the dynamic evaporator assembly 200.

[0056] In a preferred embodiment, see [reference] Figure 8 The drive ring arm assembly 600 includes a drive ring 601, which is rotatably sleeved on the outer wall of the explosion-proof vent assembly 400 and rotatably disposed inside the defrost ring tube arm 501. One end of the drive ring 601 is fixedly provided with a ring arm platform 602, and the outer wall of the drive ring 601 is fixedly provided with an outer ring tooth 603. Multiple actuation grooves 604 are provided on the ring arm platform 602.

[0057] In this embodiment, the outer ring tooth 603 and the moving cross arm 506 are on the same plane.

[0058] In this embodiment, the outer ring tooth 603 and the moving transverse arm 506 mesh.

[0059] In this embodiment, the magnetic ring 508 moves closer to the electromagnet 507 by the push of the slotted platform 509 by the return spring 511.

[0060] In this embodiment, the ring arm platform 602 is rotatably disposed within the defrosting ring arm 501.

[0061] In this embodiment, the insert rod 505 is inserted into the actuation groove 604. The actuation groove 604 is an arc-shaped groove that is radially inclined relative to the drive ring 601. When the drive ring 601 rotates, it drives the sliding block 502 to slide radially through the actuation groove 604 and the insert rod 505.

[0062] In a preferred embodiment, see [reference] Figure 9 The internal drive assembly 700 includes an internal drive tube 701. The two ends of the internal drive tube 701 are respectively fixed on the support ring platform 312 of the explosion-proof air intake assembly 300 and the support ring platform 312 of the explosion-proof air outlet assembly 400. Multiple internal drive platforms 702 are fixedly installed inside the internal drive tube 701. An internal drive shaft 706 is rotatably installed at the center of the internal drive platform 702. A second air groove 704 and a first air groove 703 are opened on the outer wall of the internal drive tube 701. A fan blade 705 is fixedly installed on the internal drive shaft 706. An internal drive gear 707 is fixedly installed at one end of the internal drive shaft 706. An internal drive end rod 708 is fixedly installed on the side of the internal drive gear 707 away from the internal drive shaft 706. An internal drive fan blade 709 is fixedly installed on the side of the internal drive end rod 708 away from the internal drive gear 707. The end of the internal drive shaft 706 near the internal drive gear 707 is rotatably installed on the first plate 201 through a bearing.

[0063] In this embodiment, the internal drive gear 707 is located between the first ring arm 206 and the support ring platform 312.

[0064] In this embodiment, the internal drive fan blade 709 is located within the second cavity 310.

[0065] In this embodiment, the inner drive end rod 708 is rotatably connected to the support ring platform 312 via a bearing.

[0066] In this embodiment, the internal drive gear 707, the toothed wheel 203, and the toothed ring 303 are on the same plane.

[0067] In this embodiment, the driven gear 203 is located between the internal drive gear 707 and the gear ring 303, and the two sides of the driven gear 203 mesh with the internal drive gear 707 and the gear ring 303 respectively.

[0068] The working principle of this application is as follows: The second pipe 108 is connected to the outdoor condenser, expansion valve 103, and explosion-proof air intake assembly 300 via a pipeline. The first pipe 105 is directly connected to the explosion-proof air intake assembly 300 via a pipeline. When the refrigeration unit is in use, the compressor 102 compresses the Freon refrigerant into a high-temperature, high-pressure gas, which flows through the second pipe 108 at one end of the T-shaped pipe 106 to the outdoor condenser. At this time, the first valve 104 on the first pipe 105 is closed. The high-temperature gas dissipates heat in the condenser, becomes a low-temperature, high-pressure liquid, and flows to the expansion valve 103. After passing through the expansion valve 103, the pressure of the high-pressure liquid drops suddenly, becoming a low-temperature, low-pressure mist liquid, which flows to the dynamic evaporator assembly 200. The low-temperature liquid absorbs heat and boils in the dynamic evaporator assembly 200, becoming a low-temperature, low-pressure gas, thus achieving refrigeration. In actual use, frost easily forms on the fins of the dynamic evaporator assembly 200. The frost covers the fins of the dynamic evaporator assembly 200. This will lead to a significant reduction in the cooling and heat exchange efficiency of the dynamic evaporator assembly 200. To solve the above problem, this application requires defrosting. Specifically, at this time, the second valve 109 is closed and the first valve 104 is opened. The first valve 104 is directly connected to the gas cap end pipe 311 on the explosion-proof air intake assembly 300 through a pipe. During defrosting, the compressor 102 compresses the Freon refrigerant into a high-temperature and high-pressure gas and sends it directly into the dynamic evaporator assembly 200 through the explosion-proof air intake assembly 300. The high-temperature gas directly melts and removes the frost on the outer wall of the dynamic evaporator assembly 200. The removed frost falls into the V-shaped hopper 110. Thus, through the switching and coordination of the second pipe 108, the first pipe 105, the second valve 109 and the first valve 104, the refrigeration unit can switch between cooling mode and defrosting mode. The dynamic evaporator assembly 200 is used as the heat absorption end in the cooling state and as the heat release end in the defrosting state.

[0069] It should be noted that the compressor 102, expansion valve 103 and outdoor condenser are existing technologies, so they will not be described in detail. The connection between the above-mentioned pipes is also existing technology, so it will not be described in detail.

[0070] Based on the above, if the explosion-proof air intake assembly 300 is not installed, during cooling, the high-pressure gas generated by the compressor 102 is reduced to a low-temperature, low-pressure mist liquid through the outdoor condenser and expansion valve 103, and then sent into the dynamic evaporator assembly 200. However, during defrosting, the high-pressure, high-temperature gas generated by the compressor 102 is directly sent into the dynamic evaporator assembly 200. That is, during defrosting, the pressure entering the dynamic evaporator assembly 200 changes significantly compared to cooling. If the gas is directly sent into the dynamic evaporator assembly 200 when changing between cooling and defrosting modes, it will cause excessive pressure in the multiple heat exchange tubes 204 on the dynamic evaporator assembly 200, resulting in the rupture of the heat exchange tubes 204. To solve this problem, this application provides an explosion-proof air intake assembly 300 and an explosion-proof air outlet assembly 400 at both ends of the dynamic evaporator assembly 200, respectively. That is, the gas entering the dynamic evaporator assembly 200 needs to pass through the explosion-proof air intake assembly 300 or the explosion-proof air outlet assembly 400 first. When switching from cooling mode to defrost mode, even if the refrigerant pressure changes significantly, the refrigerant gas first enters the explosion-proof intake assembly 300 before entering the dynamic evaporator assembly 200. When the pressure is too high, the excessive pressure will squeeze the piston 305, causing it to move into the first cavity 307. This increases the actual space inside the explosion-proof intake assembly 300, thereby changing the refrigerant gas pressure and ensuring that the refrigerant gas pressure entering the dynamic evaporator assembly 200 is normal, preventing the dynamic evaporator assembly 200 from bursting. Thus, during the switching between cooling and defrost modes, the explosion-proof intake assembly 300 and the explosion-proof outlet assembly 400 can respond to changes in refrigerant pressure by changing the internal volume of the piston 305 within the first cavity 307, thereby regulating the refrigerant pressure entering the heat exchange tube 204 and reducing the risk of structural failure of the heat exchange tube 204 due to a sudden increase in pressure.

[0071] Based on the above, the fins on traditional evaporators are mostly fixed, which results in the outer periphery of the fins having more contact with the air and the inner side having less contact. This leads to uneven heat exchange or differences between the inner and outer sides of the refrigerant during heat exchange within the evaporator. To solve this problem, the dynamic evaporator assembly 200 of this application is provided with a second plate 202 and a first plate 201 at both ends. Multiple heat exchange tubes 204 are rotatably arranged between the edge platforms of the second plate 202 and the first plate 201. This application sets the structure of the heat exchange tubes 204 to a rotating structure. In actual use, when the refrigerant passes through... When the explosion-proof air intake assembly 300 enters the dynamic evaporator assembly 200, the refrigerant drives the internal drive gear 707 and internal drive shaft 706 to rotate through the internal drive fan blades 709, which are located inside the explosion-proof air intake assembly 300. When the internal drive gear 707 rotates, it meshes with the gear wheel 203, causing the gear wheel 203 to rotate. Since the outer side of the gear wheel 203 is meshed on the gear ring 303, and the gear ring 303 is fixed, the rotating gear wheel 203 meshes and circulates on the gear ring 303. Through this structure, multiple... The heat exchange tube 204 rotates and revolves between the second platen 202 and the first platen 201. The revolving structure allows the bottom and top heat exchange tubes 204 of the dynamic evaporator assembly 200 to be interchanged. The rotating structure allows each heat exchange tube 204 on the dynamic evaporator assembly 200 to automatically rotate, thereby enabling the heat exchange fins 205 on the heat exchange tube 204 to rotate inward and outward. Through this structure, the rotation and interchange of the bottom and top heat exchange tubes 204 are achieved, and the heat exchange fins 205 on each heat exchange tube 204 are automatically rotated. This ensures dynamic heat exchange in the dynamic evaporator assembly 200 during cooling or defrosting. As a result, the internal drive fan blades 709 drive the internal drive gear 707 to rotate under the action of refrigerant flow, which in turn drives the gear wheel 203 to mesh and circulate on the fixed gear ring 303. This causes multiple heat exchange tubes 204 to revolve and rotate between the first platen 201 and the second platen 202, thereby causing the heat exchange tubes 204 at different positions to rotate cyclically. At the same time, the inner and outer sides of the heat exchange fins 205 alternately face the airflow direction, thus having a balancing effect on the heat exchange distribution of the dynamic evaporator assembly 200.

[0072] Based on the above, during defrosting, heat exchange relies solely on the dynamic rotation of the heat exchange tube 204. If the frost on the heat exchange tube 204 and heat exchange fins 205 is not completely removed by heating, this residual frost will solidify directly on the outer wall of the heat exchange tube 204 during subsequent cooling, further limiting the cooling effect of the subsequent dynamic evaporator assembly 200. To solve this problem, this application provides a multi-position defrosting arm assembly 500 and a drive ring arm assembly 600 around the explosion-proof gas outlet assembly 400. In use, during defrosting, the electromagnet 507 is energized. The electromagnet 507, through the magnetic repulsion between itself and the magnetic ring 508, causes the toothed horizontal arm 506 to slide and compress the return spring 511. The toothed horizontal arm 506, through meshing with the outer teeth 603, drives the ring arm platform 602 on the drive ring 601 to rotate. The ring arm platform 602, through the actuating groove 604 and the insert rod 505, drives multiple sliding blocks 502 to synchronously retract and slide on the defrosting ring arm 501. This structure allows the multiple sliding blocks 502 to... Multiple cleaning arms 504 on the evaporator assembly 200 move synchronously towards the periphery of the evaporator assembly 200, bringing them into contact with the heat exchange tubes 204 and heat exchange fins 205. Combined with the revolution and rotation of the heat exchange tubes 204, the cleaning arms 504 thoroughly clean the outer wall of the heat exchange tubes 204, preventing frost residue during defrosting and thus avoiding secondary residual frost buildup during subsequent cooling. During defrosting, the electromagnet 507 is energized and interacts with the magnetic ring 508. The magnetic repulsion between them drives the toothed cross arm 506 to slide, and through the outer ring tooth 603, it drives the drive ring 601 and the ring arm platform 602 to rotate. Through the linkage of the actuation groove 604 and the insertion rod 505, multiple cleaning arms 504 move towards the periphery of the dynamic evaporator assembly 200 at the same time. In conjunction with the revolution and rotation of the heat exchange tube 204, physical contact treatment is performed on the surface of the heat exchange tube 204 and the heat exchange fins 205 to reduce the possibility of residues being re-frozen and adhered to the outer wall of the heat exchange tube 204 after defrosting.

[0073] Based on the above, while the internal drive gear 707 rotates to realize the revolution and rotation of the heat exchange tube 204, the internal drive shaft 706 drives the fan blade 705 to rotate within the internal drive tube 701. Through the rotation of the fan blade 705, a certain airflow is formed between the outer and inner peripheries of the multiple heat exchange tubes 204. Through this airflow, the heat exchange contact between the dynamic evaporator assembly 200 and the air is accelerated, further ensuring the heat exchange effect of the dynamic evaporator assembly 200. Thus, the internal drive gear 707 drives the fan blade 705 to rotate within the internal drive tube 701 through the internal drive shaft 706, causing airflow exchange between the outer and inner periphery areas of the heat exchange tubes 204 in the dynamic evaporator assembly 200, thereby enhancing the heat exchange response between the dynamic evaporator assembly 200 and the surrounding air.

[0074] In another embodiment of this application, the power between the internal drive gear 707 and the internal drive shaft 706 can be mechanically designed to be disconnectable or connectable. When the fan blade 705 is not needed for airflow acceleration, the power between the internal drive gear 707 and the internal drive shaft 706 can be directly disconnected. The specific power disconnection or connection structure is prior art and will not be described in detail. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0075] In another embodiment of this application, a sealing rubber pad or the like may be provided between the sliding groove 503 and the sliding block 502.

[0076] In another embodiment of this application, the internal drive component 700 can also be controlled and driven by an external motor. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0077] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof hot-frozen refrigerant defrosting refrigeration unit, comprising a cabinet assembly (100), characterized in that, Also includes: The dynamic evaporator assembly (200) is located at the top inside the cabinet assembly (100) and is used for heat absorption during refrigeration or heat release during defrosting. An explosion-proof inlet assembly (300) and an explosion-proof outlet assembly (400) are provided at both ends of the dynamic evaporator assembly (200). Freon refrigerant enters the dynamic evaporator assembly (200) from one end through the explosion-proof inlet assembly (300), and the Freon refrigerant after heat exchange is discharged from the explosion-proof outlet assembly (400) at the other end of the dynamic evaporator assembly (200). A multi-position defrosting arm assembly (500) is set around the explosion-proof gas outlet assembly (400) and is used to perform enclosed physical cleaning and defrosting of the dynamic evaporator assembly (200). The drive ring arm assembly (600) is located inside the multi-position defrost arm assembly (500) and is used to drive the multi-position defrost arm assembly (500) to surround the dynamic evaporator assembly (200) during defrosting or to release the surround after defrosting. The internal drive component (700) is located at the center of the dynamic evaporator component (200) and is used to trigger the dynamic evaporator component (200) to perform dynamic defrosting during defrosting or dynamic heat exchange refrigeration during refrigeration.

2. The explosion-proof hot-refrigerant defrosting refrigeration unit according to claim 1, characterized in that: The cabinet assembly (100) includes a cabinet (101). A V-shaped hopper (110) for receiving defrosting is fixedly installed in the middle of the cabinet (101). An expansion valve (103) and a compressor (102) are fixedly installed at the bottom of the cabinet (101). A T-shaped pipe (106) is installed at the output end of the compressor (102). A second pipe (108) and a first pipe (105) are fixedly installed at both ends of the T-shaped pipe (106). A second valve (109) and a first valve (104) are fixedly installed on the second pipe (108) and the first pipe (105). A drain pipe (107) is fixedly installed at the bottom of the V-shaped hopper (110).

3. The explosion-proof hot-refrigerant defrosting refrigeration unit according to claim 1, characterized in that: The explosion-proof air intake assembly (300) includes an air cap (301). One end of the air cap (301) has a first cavity (307) and a second cavity (310). The other end of the air cap (301) has a main ring platform (304) fixedly installed inside. A support ring platform (312) is rotatably mounted on the main ring platform (304) via a bearing. A toothed ring (303) is installed on the outer side of the main ring platform (304). The toothed ring (303) is fixed to the inner wall of the air cap (301) via a support arm (302). A movable support is slidably installed inside the first cavity (307). A sliding rod (306) is fixedly provided on one side of the piston (305) and slides through the air cap (301). An end ring (308) is fixedly provided at the end of the sliding rod (306) away from the piston (305). A tightening spring (309) is sleeved on the sliding rod (306). The two ends of the tightening spring (309) abut against the inner wall of the air cap (301) and the piston (305) respectively. The second cavity (310) is connected to the end tube (311) of the air cap. The air cap (301) is fixedly provided at one end of the V-shaped bucket (110). The structure of the explosion-proof vent assembly (400) is the same as that of the explosion-proof inlet assembly (300). The explosion-proof vent assembly (400) is fixedly installed at the other end of the V-shaped hopper (110). The explosion-proof inlet assembly (300) and the explosion-proof vent assembly (400) are arranged opposite each other.

4. An explosion-proof hot-refrigerant defrosting refrigeration unit according to claim 3, characterized in that: The dynamic evaporator assembly (200) includes a first ring arm (206) and a second ring arm (207). The first ring arm (206) is fixedly mounted on the inner wall of the gas cap (301) on the explosion-proof air intake assembly (300), and the second ring arm (207) is fixedly mounted on the inner wall of the gas cap (301) on the explosion-proof air outlet assembly (400). A first plate (201) is rotatably mounted on the first ring arm (206) via a bearing, and a second plate (202) is rotatably mounted on the second ring arm (207) via a bearing. Multiple heat exchange tubes (204) are rotatably mounted between the edge of the second plate (202) and the first plate (201). Heat exchange fins (205) are provided on the outside of the middle tube of the heat exchange tube (204), and a gear (203) is fixedly mounted on the outside of one end of the tube of the heat exchange tube (204).

5. An explosion-proof hot-refrigerant defrosting refrigeration unit according to claim 4, characterized in that: The multi-position defrosting arm assembly (500) includes a defrosting ring tube arm (501), which is sleeved and fixed on the outer wall of the explosion-proof venting assembly (400). Multiple sliding grooves (503) are provided on one end face of the defrosting ring tube arm (501). A sliding block (502) is slidably arranged in the sliding groove (503). A cleaning arm (504) and a plug rod (505) are fixedly arranged on both sides of the sliding block (502). A limit crossbar (510) is fixedly arranged at the bottom of the inner wall of the defrosting ring tube arm (501). A grooved platform (509) is slidably arranged through the limit crossbar (510). A toothed cross arm (506) and a magnetic ring (508) are fixedly arranged on the top and one side of the grooved platform (509). An electromagnet (507) and a return spring (511) are fixedly arranged at both ends of the limit crossbar (510).

6. An explosion-proof hot-refrigerant defrosting refrigeration unit according to claim 5, characterized in that: The drive ring arm assembly (600) includes a drive ring (601), which is rotatably sleeved on the outer wall of the explosion-proof vent assembly (400) and is rotatably disposed inside the defrost ring arm (501). One end of the drive ring (601) is fixedly provided with a ring arm platform (602), and the outer wall of the drive ring (601) is fixedly provided with ring external teeth (603). Multiple actuation grooves (604) are provided on the ring arm platform (602).

7. An explosion-proof hot-refrigerant defrosting refrigeration unit according to claim 5, characterized in that: The internal drive assembly (700) includes an internal drive tube (701). Both ends of the internal drive tube (701) are fixedly mounted on the support ring platform (312) of the explosion-proof air intake assembly (300) and the support ring platform (312) of the explosion-proof air outlet assembly (400), respectively. Multiple internal drive platforms (702) are fixedly mounted inside the internal drive tube (701). An internal drive shaft (706) is rotatably mounted at the center of each internal drive platform (702). A second air duct (704) and a first air duct (703) are provided on the outer wall of the internal drive tube (701). A fan blade (705) is fixedly mounted on the shaft (706), and an internal drive gear (707) is fixedly mounted on one end of the internal drive shaft (706). An internal drive end rod (708) is fixedly mounted on the side of the internal drive gear (707) away from the internal drive shaft (706), and an internal drive fan blade (709) is fixedly mounted on the side of the internal drive end rod (708) away from the internal drive gear (707). The end of the internal drive shaft (706) near the internal drive gear (707) is rotatably mounted on the first plate (201) through a bearing.

8. An explosion-proof hot-refrigerant defrosting refrigeration unit according to claim 7, characterized in that: The heat exchange tube (204) is rotatably mounted on the support ring platform (312) of the explosion-proof air intake assembly (300) at one end near the gear (203) via a bearing, and the heat exchange tube (204) is rotatably mounted on the support ring platform (312) of the explosion-proof air outlet assembly (400) at the other end away from the gear (203) via a bearing. The internal drive gear (707) is located between the first ring arm (206) and the support ring platform (312), and the internal drive fan blades... (709) is located in the second cavity (310). The inner drive end rod (708) is rotatably connected to the support ring platform (312) through the bearing. The inner drive gear (707), the toothed wheel (203) and the toothed ring (303) are on the same surface. The toothed wheel (203) is located between the inner drive gear (707) and the toothed ring (303). The two sides of the toothed wheel (203) are respectively meshed with the inner drive gear (707) and the toothed ring (303).

9. An explosion-proof hot-refrigerant defrosting refrigeration unit according to claim 6, characterized in that: The outer ring tooth (603) and the toothed cross arm (506) are on the same plane. The outer ring tooth (603) and the toothed cross arm (506) mesh. Through the push of the grooved platform (509) by the return spring (511), the magnetic ring (508) moves closer to the electromagnet (507). The ring arm platform (602) is rotatably set in the defrosting ring tube arm (501), and the insertion rod (505) is inserted in the actuation groove (604).

10. An explosion-proof hot-refrigerant defrosting refrigeration unit according to claim 7, characterized in that: Multiple cleaning arms (504) on the multi-position defrosting arm assembly (500) are arranged outside the dynamic evaporator assembly (200), and multiple heat exchange tubes (204) on the dynamic evaporator assembly (200) are arranged outside the inner drive tube (701).

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