Refrigerant pipe and refrigeration equipment

Abstract

The present application relates to the technical field of refrigeration equipment, and provides a refrigeration refrigerant pipe and refrigeration equipment, wherein the refrigerant pipe has a refrigerant channel, the inner wall of the refrigerant channel has a plurality of turbulence cooling parts arranged in a circle, a flow-limiting groove is formed between two adjacent turbulence cooling parts, a cooling fin is arranged on the outer periphery of the refrigerant pipe and extends along the axial direction of the refrigerant pipe, and the cooling fin is integrally formed with the refrigerant pipe. The refrigeration equipment comprises a pipe end connector, a plug-in end is inserted into the end part of a plug-in elbow pipe, the plug-in elbow pipe is welded with the pipe end connector, and the plug-in elbow pipe is used for sequentially connecting a plurality of refrigerant pipes. The refrigeration refrigerant pipe and the refrigeration equipment provided by the present application reduce the vibration of the refrigeration equipment caused by the impact of refrigerant, reduce the use amount of refrigerant, and solve the technical problems that the phase change refrigerant pipe has a large pipe diameter and causes serious vibration in the prior art, and the refrigeration efficiency is low when a small-diameter refrigerant pipe is used alone.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refrigeration equipment, in particular, to a refrigeration refrigerant pipe and a refrigeration equipment. BACKGROUND

[0002] In modern industrial production, refrigeration equipment, as a key infrastructure to ensure process stability, product quality and production efficiency, is widely used in many fields such as chemical industry, food processing, cold chain logistics, electronic manufacturing, etc. Its core function is to realize the directional transfer of heat through the circulation of refrigerant, and the refrigerant pipe, as the "blood vessel" connecting the compressor, condenser, evaporator and other core components in the refrigeration system, bears the important responsibilities of refrigerant transportation, pressure maintenance and heat exchange, and its performance is directly related to the operation efficiency, stability and service life of the refrigeration equipment.

[0003] During the use of the refrigerant pipe, vibration problem is always a prominent challenge affecting system reliability. When the refrigerant flows in the pipe, it will produce periodic impact force on the inner wall of the pipe due to factors such as turbulent flow effect, pressure pulsation, phase change process (such as evaporation or condensation), etc.; at the same time, the mechanical vibration generated by the power equipment such as compressor and pump in the refrigeration system will also be transmitted through the pipe structure, forming a composite vibration excitation. This continuous vibration not only causes fatigue wear between the pipe and the support, the connecting piece, increases the risk of refrigerant leakage, and in severe cases, it can also cause plastic deformation or even rupture of the pipe structure, causing production interruption or refrigerant leakage to the food storage area. In addition, the noise pollution caused by vibration will also have an adverse effect on the production environment and the health of the operators. At present, although the industry adopts measures such as adding damping supports and optimizing the pipe layout to alleviate the vibration problem, for high-pressure and large-flow refrigerant systems under complex working conditions, traditional vibration reduction measures often cannot accurately match the vibration characteristics, and the vibration reduction effect is limited.

[0004] At the same time, the refrigerant pipe of industrial refrigeration equipment also generally faces the problem of high energy consumption due to large diameter. The demand for refrigeration capacity in industrial scenarios is usually large, in order to meet the demand for large-flow refrigerant transportation, the diameter of the refrigerant pipe is often designed to be large. On the one hand, large-diameter pipes increase the flow resistance of the fluid in the pipe, especially when the refrigerant is in a turbulent flow state, the pressure loss along the pipe increases nonlinearly with the increase of the pipe diameter, causing the power equipment such as compressor to consume more energy to maintain the system pressure; on the other hand, the large-diameter pipe has a larger heat conduction area, and in the process of refrigerant transportation, the heat exchange between the low-temperature refrigerant in the pipe and the outside environment is more intense, causing an increase in cold loss, further reducing the energy efficiency ratio of the refrigeration system. In addition, the material consumption of large-diameter refrigerant pipes is large, not only increasing the initial investment cost of the equipment, but also significantly increasing the difficulty and cost of installation and maintenance. SUMMARY

[0005] To overcome the above defects, embodiments of the present application provide a refrigeration refrigerant pipe and a refrigeration equipment, which solve the technical problems of severe vibration of the phase-change refrigerant pipe in the prior art when the pipe diameter is large and low refrigeration efficiency when the pipe diameter is reduced

[0006] According to one aspect, at least one embodiment of the present application provides a refrigeration refrigerant pipe, comprising:

[0007] The refrigerant pipe has a refrigerant channel, and the inner wall of the refrigerant channel has a plurality of turbulence cooling portions arranged in a circle, and a flow-limiting groove is formed between adjacent two turbulence cooling portions;

[0008] The cooling fin is arranged on the outer periphery of the refrigerant pipe and extends along the axial direction of the refrigerant pipe, and the cooling fin is integrally formed with the refrigerant pipe.

[0009] As a further technical solution, the cooling fin is two, and the two cooling fins are symmetrically arranged on the outer side of the refrigerant pipe, and the two cooling fins are arranged at an angle or coplanarly.

[0010] As a further technical solution, further comprising:

[0011] The cooling frame is sleeved on the outer periphery of the refrigerant pipe and the cooling fin, and is integrally formed with the refrigerant pipe and the cooling fin, and the opposite sides of the cooling frame have a plug-in groove and a plug-in portion, respectively, and the plug-in portion is used for plug-in cooperation with the plug-in portion of the adjacent cooling frame, so that the cooling frames are sequentially plugged to form a cooling plate, and the cooling plate is used for carrying materials.

[0012] A refrigeration equipment uses a refrigeration refrigerant pipe, comprising:

[0013] The pipe end connector has a welding end and a plug-in end, the welding end is used for welding with the end of the refrigerant pipe, the pipe end connector has a transition pipe cavity, the cross-sectional area of the transition pipe cavity gradually increases from the welding end to the plug-in end, and the cross section of the transition pipe cavity at the welding end is consistent with the cross section of the refrigerant channel;

[0014] The plug-in elbow pipe is plug-in matched with the plug-in end of the pipe end connector, and the plug-in elbow pipe is used for connecting two refrigerant pipes arranged adjacent to each other.

[0015] As a further technical solution, the inner wall of the transition pipe cavity has a plurality of turbulence steps arranged at intervals along the axis of the transition pipe cavity and a pressure bearing portion arranged opposite to the turbulence steps, and after the plug-in cooperation of the pipe end connector and the plug-in elbow pipe, the turbulence steps are located on the large-diameter side of the elbow of the plug-in elbow pipe, used for disturbing and destroying the vortex of the refrigerant medium, and the pressure bearing portion is located on the small-diameter side of the elbow of the plug-in elbow pipe, used for bearing the pressure when the refrigerant medium turns.

[0016] As a further technical solution, the transition pipe cavity inner wall further has a deceleration surface, the deceleration surface is located between two adjacent turbulence steps, the pressure bearing part has a pressure bearing surface, from the welding end of the pipe end connector to the plug-in end, the pressure bearing surface gradually approaches the axis of the pipe end connector, the angle between the deceleration surface and the axis of the pipe end connector is greater than the angle between the axis of the pipe end connector and the pressure bearing surface.

[0017] The transition pipe cavity center line is arranged at an angle with the axis of the pipe end connector.

[0018] As a further technical solution, the pipe end connector outer wall has a welding step, the plug-in elbow pipe end portion abuts against the welding step, the outer diameter of the welding step is greater than the outer diameter of the plug-in elbow pipe end portion, and the refrigeration equipment further comprises:

[0019] A fixed seat, the fixed seat has a fixed hole through which the plug-in end passes;

[0020] A shock-absorbing ring, the shock-absorbing ring is inlaid on the inner wall of the fixed hole and is sleeved on the outer periphery of the plug-in end;

[0021] A sealing ring, the sealing ring is inlaid on the inner wall of the shock-absorbing ring, the sealing ring is two, the two sealing rings are arranged at intervals along the axial direction of the fixed hole and are respectively sleeved on the outer periphery of the plug-in elbow pipe and the pipe end connector.

[0022] As a further technical solution, it further comprises:

[0023] A refrigeration box body, the refrigeration box body has a refrigeration cavity;

[0024] A support frame, the support frame is a plurality of and is arranged in the refrigeration cavity in sequence, and a through gap is formed between the cooling guide fins on the refrigerant pipes fixed on the adjacent two fixed seats;

[0025] A circulating fan, the circulating fan is arranged in the refrigeration cavity and is used for directing towards the through gap.

[0026] As a further technical solution, when the two cooling guide fins on the refrigerant pipe are coplanar, the refrigeration frame comprises:

[0027] A fixed frame, the fixed frame is two and is symmetrically arranged on the outer sides of the two cooling guide fins on the refrigerant pipe, the adjacent sides of the two fixed frames respectively have a fixed slot, and the two cooling guide fins on the same refrigerant pipe are respectively plugged into the fixed slots on the two fixed frames;

[0028] A connecting bolt, the connecting bolt penetrates through the two fixed frames and is used for fixing the relative positions of the two fixed frames, and the connecting bolt is located between the adjacent two refrigerant pipes;

[0029] A compression rope, the compression rope is arranged on one side of the fixed frame and is arranged on the outer edge of the cooling guide fin.

[0030] As a further technical solution, when the two cold guide fins on the refrigerant pipe are arranged at an angle, the refrigerant pipes are arranged in groups from top to bottom, and the refrigerant pipes are provided with a plurality of groups in the horizontal direction, the refrigeration equipment further comprises:

[0031] The air baffle is provided with two air baffles, which are arranged on both sides of the two ends of the plurality of groups of refrigerant pipes, and the two air baffles form a refrigeration space, and the refrigerant pipe is arranged in the refrigeration space.

[0032] The beneficial effects of the present application are:

[0033] In the present application, the refrigerant pipe is mainly composed of a refrigerant pipe and a cold guide fin, wherein the refrigerant pipe is provided with a refrigerant channel inside for the flow of refrigerant to realize heat transfer. A plurality of circumferentially arranged turbulence guide portions are arranged on the inner wall of the refrigerant channel. These structures can not only increase the contact area between the refrigerant and the inner wall of the pipe and strengthen the heat conduction efficiency, but also can absorb the pulsating impact generated by the high-speed flow of the refrigerant through elastic deformation, thereby reducing the vibration and noise of the pipe; the flow limiting groove formed between the two adjacent turbulence guide portions can guide the orderly flow of the refrigerant, avoid the pressure loss caused by local vortex, stabilize the flow rate when the refrigerant flow fluctuates, and ensure uniform heat exchange. The cold guide fin is arranged on the outside of the refrigerant pipe and is integrally formed with the refrigerant pipe. This design eliminates the contact thermal resistance between the traditional split fin and the pipe, improves the heat conduction efficiency, avoids the problems of material denaturation or uneven weld caused by welding process, effectively prevents the cracking of the fin during the refrigeration process, further accelerates the heat exchange between the refrigerant pipe and the external environment by increasing the contact area with the external environment, and makes the entire refrigerant pipe have high heat exchange performance while ensuring structural stability, which is suitable for various refrigeration scenes. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are only some example embodiments of the present application. Those skilled in the art can obtain other drawings according to the content of the example embodiments of the present application and the drawings without creating any creative labor.

[0035] Figure 1 The structure diagram of one embodiment of the refrigerant pipe in the present application;

[0036] Figure 2 The structure diagram of another embodiment of the refrigerant pipe in the present application;

[0037] Figure 3 The structure diagram of another embodiment of the refrigerant pipe in the present application;

[0038] Figure 4Fig. 1 is a schematic view of the internal refrigerant pipe assembly structure of the refrigerant pipe of the refrigeration device in the present application when the refrigerant pipe is installed on the top plate of the refrigeration device;

[0039] Figure 5 Fig. 2 is a schematic view of the partial structure of the refrigerant pipe in the present application; Figure 4

[0040] Figure 6 Fig. 3 is a schematic view of the angle of the structure in the present application; Figure 5

[0041] Figure 7 Fig. 4 is a schematic view of the C-C cross-sectional structure in the present application; Figure 6

[0042] Figure 8 Fig. 5 is a schematic view of the D-D cross-sectional structure in the present application; Figure 6

[0043] Figure 9 Fig. 6 is a schematic view of the E-E cross-sectional structure in the present application; Figure 6

[0044] Figure 10 Fig. 7 is a schematic view of the F-F cross-sectional structure of the pipe end joint in the present application; Figure 9

[0045] Fig. 8 is a schematic view of the internal assembly structure of the refrigerant pipe of the refrigeration device in the present application when the refrigerant pipe is installed on the bottom plate of the refrigeration device; Figure 11

[0046] Fig. 9 is a schematic view of the refrigerant pipe assembly structure in another embodiment of the present application. Figure 12 In the figure: refrigerant pipe 1, refrigerant passage 101, turbulence cooling guide 102, flow limiting groove 103, cooling fin 2, through gap 201, cooling frame 3, insertion groove 301, insertion part 302, pipe end joint 5, welding end 501, insertion end 502, transition pipe cavity 503, turbulence step 505, pressure bearing part 506, deceleration surface 507, pressure bearing surface 508, welding step 509, insertion elbow 6, fixed clamping seat 7, fixed hole 701, shock absorbing ring 8, sealing ring 9, refrigeration box 10, refrigeration cavity 1001, refrigeration frame 11, circulating fan 12, fixed frame 1101, fixed groove 1102, connecting bolt 1103, compression rope 1104, air baffle 13, refrigeration space 1301, support frame 14.

[0047] DETAILED DESCRIPTION

[0048] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, and are not a limitation of the present application. ​​​​​​

[0049] For simplicity and brevity of the drawings, only the parts related to the application are shown in the drawings, which do not represent the actual structure of the product. In addition, in order to make the drawings simple and easy to understand, in some drawings, only one of the parts with the same structure or function is shown schematically, or only one of them is marked. In this document, "one" not only means "only one", but also means "more than one" situation, and "several" includes "two" and "more than two".

[0050] In this document, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0051] In the present application, unless otherwise specified and limited, "on" or "under" the first feature of the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "above" of the first feature of the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature of the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0052] In the description of the present embodiment, the terms "up", "down", "left", "right" and other orientation or position relationship are based on the orientation or position relationship shown in the drawings, which is only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, therefore cannot be understood as a limitation on the present application.

[0053] In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0054] As Figures 1-3As shown, it shows a refrigerant pipe in an embodiment of the present application, mainly composed of a refrigerant pipe 1 and a cold guide fin 2, wherein the refrigerant pipe 1 is internally provided with a refrigerant passage 101 for refrigerant flow to achieve heat transfer. The inner wall of the refrigerant passage 101 is provided with a plurality of circumferentially arranged turbulence guide cooling parts 102, which can not only increase the contact area of the refrigerant with the inner wall of the pipe and strengthen the heat transfer efficiency, but also absorb the pulsating impact generated by the high-speed flow of the refrigerant through its elastic deformation, thereby reducing the vibration and noise of the pipe; the flow limiting groove 103 formed between the adjacent two turbulence guide cooling parts 102 can guide the orderly flow of the refrigerant, avoid the pressure loss caused by local vortex, stabilize the flow rate when the refrigerant flow fluctuates, and ensure uniform heat exchange. The cold guide fin 2 is arranged on the outside of the refrigerant pipe 1 and is integrally formed with the refrigerant pipe 1. This design eliminates the contact thermal resistance between the traditional split fin and the pipe, improves the heat transfer efficiency, avoids the problems of material denaturation or uneven weld caused by welding process, effectively prevents the fin from cracking during refrigeration, further accelerates the heat exchange between the refrigerant pipe 1 and the outside environment by increasing the contact area with the outside environment, and makes the entire refrigerant pipe 1 have high heat exchange performance while ensuring structural stability, which is suitable for various refrigeration scenes.

[0055] The refrigerant pipe 1 with a cold guide fin 2 is not considered for use in large industrial equipment in the prior art, because large refrigeration equipment often makes the environment temperature reach tens of degrees Celsius, and the distribution of the coil type medium pipe is too high in cost, and the distribution is too sparse to achieve the refrigeration effect. In order to ensure the refrigeration effect, the column type medium pipe is usually used. The column type medium pipe uses a large-diameter medium pipe when low-temperature environment is required. The large-diameter medium pipe has the following effects: larger cross-sectional area, allowing higher refrigerant volume flow, suitable for high refrigeration capacity systems. A large amount of refrigerant needs to be circulated in unit time to meet the heat absorption demand, and the large-diameter pipe can avoid the "bottleneck effect" caused by insufficient flow area, but the heat exchange area of the large-diameter single pipe is large, but the flow rate is low, the turbulence is weak, the heat transfer coefficient in the pipe is low, and it is difficult to densely arrange in the same space, and the total heat exchange area grows limitedly. Therefore, a 17-33mm diameter medium pipe is often used in industrial scenes. The medium pipe of this diameter will also cause large vibration and noise due to internal medium phase change during use. In order to ensure the effect, the pipe diameter cannot be broken through to below 10mm in high-power refrigeration equipment for industrial or living use.

[0056] The design of the turbulence guide cooling part 102 solves the vibration problem of the refrigerant during long process transportation and phase change, increases the heat exchange area in the refrigerant channel 101, and further reduces the pipe diameter because of the increased heat exchange area, so that the diameter of the refrigerant pipe 1 is reduced to 10 mm or less. The turbulence guide cooling part 102 forms a buffer barrier in the refrigerant flow path through the circumferential arrangement of the protruding structure. When the refrigerant flows through, the protruding structure can disperse the impact energy, and the micro-elastic deformation of the protruding structure itself can absorb the pulsating stress, effectively weakening the vibration transmission strength. At the same time, the flow limiting groove 103 between adjacent turbulence guide cooling parts 102 can comb the turbulent flow field and reduce the vibration amplification effect caused by the intensification of turbulent flow. This design not only strengthens the cooling effect, but also reduces the influence of refrigerant flow vibration on the pipeline system from the root, especially suitable for long-distance refrigerant pipe network in industrial refrigeration storage, which improves the stability and durability of the system operation.

[0057] When the refrigerant flows at high speed in the refrigerant channel 101, without special structure guidance, the refrigerant close to the inner wall of the pipeline is easy to form a laminar boundary layer with slow flow rate due to the viscous effect. This laminar flow area will hinder the direct heat exchange between the refrigerant and the inner wall of the pipeline, resulting in a decrease in heat exchange efficiency. The protruding structure of the turbulence guide cooling part 102 directly breaks the stability of the laminar boundary layer: the protruding part will form a physical barrier to the flowing refrigerant, forcing the refrigerant that flows along the wall to be diverted and split, tearing the laminar flow into irregular turbulent flow.

[0058] During the formation of turbulent flow, the turbulence guide cooling part 102 further strengthens the disturbance intensity inside the refrigerant. The space between adjacent turbulence guide cooling parts 102 forms a local flow rate difference, and the refrigerant in the high flow rate area will impact and mix with the refrigerant in the low flow rate area. This internal disturbance significantly increases the collision frequency between refrigerant molecules, and also allows more sufficient heat transfer between different temperature layers of the refrigerant. The high-speed refrigerant originally concentrated in the central area of the pipeline will more frequently contact the inner wall of the pipeline and the surface of the turbulence guide cooling part 102 under the action of turbulence, shortening the heat transfer path.

[0059] In addition, the circumferential arrangement of the turbulence guide cooling part 102 ensures the uniformity of the disturbance of the refrigerant in the entire pipeline cross section. No matter which direction the refrigerant enters the channel, it will be affected by the turbulence structure, avoiding the heat exchange "dead angle" in the local area due to the smooth flow. At the same time, even if the flow rate changes, the turbulence guide cooling part 102 can still maintain the turbulent flow state of the refrigerant, ensuring the stable contact frequency between the refrigerant and the inner wall of the pipeline and the surface of the turbulence guide cooling part 102, thereby providing continuous flow conditions for efficient heat conduction.

[0060] The turbulent flow state makes the refrigerant pipe 1 prone to vibration, and the design of the turbulence cooling guide part 102 is equivalent to adding a reinforcing rib inside compared with the conventional medium pipe. The turbulence cooling guide part 102 makes it easier to absorb impact stress, and at the same time, reduces the area of the refrigerant passage 101, thereby reducing the use amount of the refrigerant medium, and at the same time, increases the wall thickness of the refrigerant pipe 1, and improves the anti-vibration performance of the refrigerant pipe 1 itself.

[0061] In actual application, in the long-distance conveying process, the existence of the flow limiting groove 103 makes the vortex generated in the reciprocating phase process of the refrigerant medium be destroyed, thereby reducing the vibration caused by the vortex. When the refrigerant medium changes from gas to liquid, the flow limiting groove 103 is used to limit the flow direction and guide the liquid medium to flow along the flow direction of the gaseous medium, thereby reducing the vibration caused by the phase change.

[0062] The cooling fin 2 and the refrigerant pipe 1 are integrally formed by cold pressure casting production process. Compared with the medium pipe of the prior art, the diameter can be reduced, especially for high-power industrial refrigeration equipment. Through integral molding, the cooling efficiency of the refrigerant pipe 1 and the cooling fin 2 can be ensured to be consistent, the shrinkage rate is consistent at low temperature, and cracking is reduced. Especially for long-distance refrigeration pipeline, local material cracking is avoided to cause overall damage. At the same time, the connection of the cooling fin 2 does not use welding technology, and the welding seam cracking or even breaking does not occur, thereby improving the stability of the equipment. Through the integral molding technology, the diameter of the refrigerant pipe 1 is reduced, and through the reduction of the pipe diameter, the phase change of the refrigerant medium is basically consistent, thereby reducing the vibration caused by the phase change of the refrigerant medium, and prolonging the service life of the equipment.

[0063] Further, the cooling fin 2 is two, and the two cooling fins 2 are arranged at an angle or coplanar.

[0064] In some examples, as shown in Figures 1-2 The cooling fin 2 is provided with two, and the two cooling fins 2 are arranged at an angle or coplanar. This double fin layout can more flexibly adapt to different installation spaces and heat exchange requirements while maintaining the advantages of integral molding (avoiding welding defects and eliminating contact thermal resistance): when the angle is set, the contact range of the fin and the surrounding medium can be expanded in limited space, especially suitable for narrow areas such as warehouse corners. Through the three-dimensional distribution of the fin, the air convection heat exchange is enhanced, as shown in Figure 2As shown, for the case of insufficient external heat exchange area, the cooling fin 2 arranged at an angle can form a broken line heat exchange space without increasing the pipe diameter, and the heat exchange effect can be ensured under the action of the fan; if arranged in the same plane (180°), a symmetrical heat exchange surface can be formed, making the heat exchange on both sides of the refrigerant pipe 1 more uniform, which is suitable for open storage space that requires large area and balanced refrigeration. At the same time, the cooling fin 2 can be bent and integrally formed into a corrugated cooling fin 2, further reducing the pipe diameter or increasing the refrigeration effect under the same pipe diameter. At the same time, the double-fin design is easier to clean and maintain than the multi-fin structure, reducing the accumulation of dust and impurities between the fins in the storage environment, and ensuring stable long-term heat exchange efficiency. It is worth noting that the number of cooling fins 2 cannot exceed 2 and cannot be a single one. The heat exchange efficiency of a single cooling fin 2 is lower than that of a double-fin structure under the same heat exchange area, and more than two cooling fins 2 will affect the airflow, thereby reducing the heat exchange efficiency.

[0065] In some examples, as shown in FIG. 1, the refrigeration equipment comprises a refrigerant pipe 1, a cooling fin 2 arranged on the refrigerant pipe 1, and a cooling frame 3 arranged on the cooling fin 2. Figure 3 As shown, the refrigerant pipe 1 is provided with a cooling frame 3 arranged on the cooling fin 2, and the cooling frame 3, the cooling fin 2, and the refrigerant pipe 1 are integrally formed by an integral forming process to form a seamless overall structure. This design not only avoids the heat resistance problem caused by traditional assembly methods to ensure efficient and smooth cold energy transmission, but also further improves the stability of the overall structure. The cooling frame 3 is provided with a plug-in slot 301 and a plug-in part 302, wherein the plug-in part 302 can be precisely inserted into the plug-in slot 301 of the adjacent other cooling frame 3. Through this plug-in cooperation, a plurality of cooling frames 3 can be quickly combined to form a cooling plate. The core advantage of this structure is to strengthen the cold energy transmission efficiency and space utilization: the cooling frame 3 is integrally formed with the cooling fin 2 and the refrigerant pipe 1, and the cold energy can be quickly conducted from the refrigerant pipe 1 to the entire cooling plate through the fin; compared with the traditional air cooling mode, the material cooling rate is improved when the material is directly placed on the cooling plate, which is especially suitable for industrial materials that need to be quickly frozen or stored at low temperature (such as pharmaceutical reagents and precision components).

[0066] The length of the cooling plate can be adjusted by increasing or decreasing the number of cooling frames 3 to adapt to different sizes of materials; the spacing between the upper and lower arranged cooling plates can be adjusted by the refrigeration frame 11 to meet the storage needs of materials of different heights. At the same time, as a bearing structure, the integrally formed frame of the cooling plate enhances the overall bearing capacity, and cooperates with the fixed support of the refrigeration frame 11 to avoid deformation of the fin or uneven stress on the refrigerant pipe 1 due to the weight of the material. The modularly spliced cooling plate is easy to maintain and replace, and the overall replacement is not required when a single frame is damaged, which reduces the equipment operation and maintenance cost and adapts to the multiple requirements of industrial refrigeration storage for high efficiency, durability and flexibility.

[0067] A refrigeration equipment, in some examples, as shown in FIG. 1, Figures 4-12As shown, using the refrigerant pipe 1, also includes pipe end fitting 5, pipe end fitting 5 as the refrigerant pipe 1 and the connection of external components, its welding end 501 and the end of the refrigerant pipe 1 welding fixed, and the transition pipe cavity 503 of welding end 501 cross section and refrigerant channel 101 shape is exactly the same, to ensure that the refrigerant from the refrigerant pipe 1 into the pipe end fitting 5 when the flow field smooth transition, avoid because of cross section mutation produces local vortex or pressure loss. The cross-sectional area of the transition pipe cavity 503 gradually increases from the welding end 501 to the plug-in end 502, this gradual change structure can buffer the refrigerant flow velocity variation, reduce the turbulence disturbance, cooperate with the spoiler cooling part 102 inside the refrigerant pipe 1, further reduce the system vibration and noise.

[0068] The plug-in elbow 6 is used to realize the series connection of multiple refrigerant pipes 1, and the end is inserted into the plug-in end 502 of the pipe end fitting 5 and welded fixed, which not only ensures the sealing of the connection, but also simplifies the alignment process during welding through the plug-in positioning, reduces the problem of increased flow resistance caused by welding misalignment. This series connection mode enables the refrigerant to flow continuously in the pipe system composed of multiple refrigerant pipes 1, and the combined design of the pipe end fitting 5 and the plug-in elbow 6 makes the pipe layout of the entire refrigeration equipment more flexible, which can adjust the layout according to the structural characteristics of the storage space, and balance the refrigeration efficiency and installation adaptability.

[0069] It should be noted that after the welding end 501 is inserted into the plug-in elbow 6 and welded, the end face coincides with the cross section of the bend part of the plug-in elbow 6, which makes the pressure load at the bend not borne by the plug-in elbow 6 alone, but transmitted to the pipe end fitting 5 through the coinciding contact surface, and bears the load together. In the traditional refrigerant pipe elbow, fatigue cracking is prone to occur due to fluid impact and structural stress concentration, while in the present scheme, the rigid structure of the pipe end fitting 5 and the bend part of the plug-in elbow 6 form a rigid support cooperation, which can disperse the local pressure and improve the anti-explosion performance and service life of the pipe system.

[0070] At the same time, the cross-sectional area of the transition pipe cavity 503 gradually increases from the welding end 501 to the plug-in end 502, which drives the gradual change of the depth of the flow limiting groove 103 inside the refrigerant pipe 1. The deepening of the flow limiting groove 103 can more strongly cut and disperse the vortex generated by the turning when the refrigerant flows through the bend of the plug-in elbow 6. The traditional elbow bend is prone to form a stable vortex area, which leads to increased pressure loss and intensified local vibration. The deepening of the flow limiting groove 103 can disperse the vortex energy into multiple small-scale turbulent flows and make the turbulent flow gradually disappear, which reduces the pressure loss at the bend, and cooperates with the buffering effect of the spoiler cooling part 102, further weakens the vibration transmission caused by vortex impact, and makes the operation of the entire pipe system more stable and efficient.

[0071] In some examples, the inner wall of the transition cavity 503 is additionally provided with a plurality of turbulence steps 505 and a pressure bearing part 506. When the pipe end connector 5 is inserted into the insertion elbow 6, the turbulence steps 505 are located on the large-diameter side of the elbow bend (i.e. the outer side area of the fluid turning), and the pressure bearing part 506 corresponds to the small-diameter side of the elbow bend (i.e. the inner side area of the fluid turning).

[0072] The effect of this layout is twofold. On the one hand, the large-diameter side is an area where vortexes are prone to form when the refrigerant flows through the elbow bend. The turbulence steps 505 cut and disperse the vortexes through the stepped protrusions, breaking the large-scale vortexes of the traditional elbow bend into multiple small-scale flow beams. In combination with the gradually deepening design of the flow limiting groove 103, the pressure loss at the elbow bend can be further reduced, and the vibration caused by vortex impact can also be reduced. On the other hand, the small-diameter side is an area where the fluid pressure is concentrated (the inner side pressure is higher than the outer side pressure when the elbow bend). The pressure bearing part 506, as a locally thickened protruding structure, can form a rigid support with the inner wall of the insertion elbow 6, dispersing the concentrated pressure to a larger area and avoiding plastic deformation of the small-diameter side of the elbow bend due to long-term high-pressure impact, thereby improving the overall pressure bearing capacity of the elbow bend.

[0073] The turbulence steps 505 and the pressure bearing part 506 improve the refrigerant flow efficiency through flow field optimization and enhance the durability of the pipeline system through structural reinforcement. In combination with the gradually changing cross-section of the transition cavity 503 and the turbulence guiding part 102 of the refrigerant pipe 1, the stability of the refrigeration equipment under high-pressure and high-frequency operating conditions is improved.

[0074] In some examples, the inner wall of the transition cavity 503 is additionally provided with a deceleration surface 507 and a pressure bearing part 506. The pressure bearing part 506 has a pressure bearing surface 508. The deceleration surface 507 is located between two adjacent turbulence steps 505, and the angle between the deceleration surface 507 and the axis of the pipe end connector 5 is greater than the angle between the pressure bearing surface 508 and the axis, i.e. the deceleration surface 507 is more inclined, while the pressure bearing surface 508 is more gradual. This angle difference differentiates the functions of the two surfaces. On the large-diameter side of the insertion elbow 6 (the area where vortexes are prone to form), the inclined deceleration surface 507 can form a "buffer slope" for the high-speed flowing refrigerant, increasing the contact area to slow down the local flow speed. In combination with the vortex breaking effect of the turbulence steps 505, the energy of large-scale vortexes is further weakened. The gradual pressure bearing surface 508 is suitable for the high-pressure environment on the small-diameter side. The smaller angle makes the structural thickness of the pressure bearing part 506 more uniform along the axial direction, allowing the concentrated pressure to be transmitted more smoothly to the body of the pipe end connector 5, avoiding local stress concentration caused by an excessively steep angle, and improving the anti-deformation ability of the small-diameter side.

[0075] At the same time, the center line of the transition tube cavity 503 is arranged at an angle with the center line of the pipe end connector 5, which makes the refrigerant entering the transition tube cavity 503 from the refrigerant pipe 1 turn at a preset angle in advance, reducing the sudden turning amplitude at the elbow of the plug-in elbow pipe 6. The joint of the traditional straight connection pipe connection end is easy to cause the refrigerant to form a right angle impact at the elbow, while the inclined center line of the transition tube cavity 503 can guide the refrigerant impact angle to increase, so that the pressure fluctuation amplitude in the turning process is reduced, and the continuous flow field optimization structure is formed by cooperating with the structure such as the spoiler step 505 and the deceleration surface 507 of the inner wall.

[0076] The vibration and energy loss caused by fluid impact are reduced by flow field optimization, and the pressure bearing capacity at the elbow is strengthened by structural angle design, so that the pipe system of the entire refrigeration equipment is more stable and efficient in high-pressure and high-frequency refrigeration cycles, especially suitable for long-distance and multi-elbow pipe layout requirements in industrial refrigeration and storage.

[0077] In some examples, the welding step 509 designed on the outer wall of the pipe end connector 5 optimizes the connection accuracy and structural strength of the plug-in elbow pipe 6: when the end of the plug-in elbow pipe 6 abuts against the welding step 509, the outer diameter of the step is larger than the outer diameter of the end of the plug-in elbow pipe 6, forming a positioning structure to ensure that the axes of the two are aligned during welding, avoiding the problem of uneven weld caused by offsetting during docking; at the same time, the convex structure of the welding step 509 increases the welding contact area, so that the weld can more evenly bear the internal pressure of the pipe.

[0078] The fixed seat 7 fixes the connection part of the pipe end connector 5 and the plug-in elbow pipe 6 on the equipment support or wall through the fixing hole 701, avoiding displacement of the pipe due to self-weight or vibration; the shock-absorbing ring 8 in the fixing hole 701 is made of high-elasticity rubber or silicone, and is sleeved outside the plug-in end 502, which can absorb pipe vibration and reduce fatigue of the welding part or looseness of the fixed seat 7 caused by long-term vibration, and also buffer the impact load during equipment operation. The sealing ring 9 is arranged inside the shock-absorbing ring 8, and the two sealing rings 9 are tightly abutted against the outer walls of the plug-in elbow pipe 6 and the pipe end connector 5, respectively, forming "double radial sealing": the inner sealing ring 9 blocks the path of refrigerant seepage from the welding gap, and the outer sealing ring 9 further isolates the external water vapor or impurities, especially suitable for high-humidity and high-pressure working conditions in industrial refrigeration and storage.

[0079] In some examples, the refrigeration device further comprises the refrigeration box 10, the support frame 14 and the circulating fan 12 to form a complete industrial refrigeration storage system, and each component cooperates to improve the refrigeration efficiency and temperature uniformity of the refrigeration space. The refrigeration cavity 1001 of the refrigeration box 10 is a closed or semi-closed space, which provides a low-temperature storage environment. The heat preservation layer (such as a polyurethane foaming layer) can reduce the invasion of external heat and reduce the refrigeration energy consumption. The support frame 14 is installed in the refrigeration cavity 1001, and a plurality of fixed seats 7 are arranged on the support frame 14 in a regular manner. The end of the refrigerant pipe 1 is positioned by the fixed seat 7, so that a plurality of groups of refrigerant pipes 1 form an orderly distributed refrigeration pipe network in the refrigeration cavity 1001. The through gap 201 is reserved between the cold guide fins 2 of the refrigerant pipes 1 on adjacent fixed seats 7. This gap design avoids mutual interference of the fins and provides a channel for air flow, ensuring that the cold can be diffused to each area of the refrigeration cavity 1001.

[0080] The circulating fan 12 is installed in the refrigeration cavity 1001, and the air outlet is directed towards the through gap 201. Its function is to forcibly drive the air circulation in the refrigeration cavity 1001. When the circulating fan 12 operates, the airflow is introduced into the through gap 201, fully contacts the cold guide fins 2 and the cold guide plate, and then carries the cold to the entire refrigeration cavity 1001. Compared with natural convection, this design improves the air flow rate in the refrigeration cavity 1001, improves the heat exchange efficiency of the cold guide fins 2, and quickly eliminates local temperature dead angles, so that the temperature uniformity in the refrigeration cavity 1001 is controlled to meet the constant temperature storage requirements of precision components or fresh products in industrial storage.

[0081] At the same time, the support frame 14 can be adjusted in number according to the storage requirements to adapt to different refrigeration environments, and the refrigerant pipe 1 is connected with the refrigeration frame 11 through the fixed seat 7, combined with the buffering effect of the shock absorbing ring 8, which can reduce the mutual transmission of vibration of the circulating fan 12 and the refrigerant flow, and avoid resonance noise. Overall, the refrigeration box 10 provides a heat preservation basis, the support frame 14 realizes the orderly layout of the refrigerant pipe 1, and the circulating fan 12 strengthens the diffusion of cold. The three form a complete closed loop with the efficient heat exchange structure of the refrigerant pipe 1 and the stable connection design of the pipe system, so that the refrigeration device has the characteristics of high-efficiency refrigeration, temperature uniformity and stable operation, and is suitable for complex scenes of industrial refrigeration storage.

[0082] In some examples, when two cold guide fins 2 on the refrigerant pipe 1 are arranged coplanarly, the structure design of the refrigeration frame 11 is specially adapted to this fin layout, and through the cooperation of the fixing frame 1101, the connecting bolt 1103 and the compression rope 1104, the stable installation and efficient heat exchange of the refrigerant pipe 1 in the refrigeration cavity 1001 are realized. Two oppositely arranged fixing frames 1101 are installed in the refrigeration cavity 1001, and the fixing grooves 1102 opened on the surface thereof match the outer shape of the cold guide fin 2. Two cold guide fins 2 coplanarly arranged on one refrigerant pipe 1 can be respectively embedded in the fixing grooves 1102 of the two fixing frames 1101, forming a "two-side clamping" positioning structure. This design uses the plane structure of the cold guide fin 2 itself as the installation reference, which not only avoids additional compression to the main body of the refrigerant pipe 1, but also limits the radial rotation of the refrigerant pipe 1 through the fitting of the fin and the fixing groove 1102, ensuring that the cold guide fin 2 always faces the airflow direction of the circulating fan 12, and ensuring the stable heat exchange efficiency.

[0083] The connecting bolt 1103 penetrates through the two opposite fixing frames 1101, and the spacing of the two fixing frames 1101 can be accurately controlled by adjusting the tightness of the bolt, so that the fixing groove 1102 closely fits the cold guide fin 2.

[0084] The compression rope 1104 arranged on one side of the fixing frame 1101 has a soft characteristic that can adapt to the surface radius of the cold guide fin 2, and by pressing the fin in the fixing groove 1102, the installation gap is further eliminated. Compared with the rigid compression structure, the compression rope 1104 can avoid local stress damage to the cold guide fin 2 (especially for the fin and refrigerant pipe 1 structure integrally formed), while providing a certain buffer when the equipment vibrates, preventing deformation of the fin and the fixing frame 1101 due to rigid impact. During installation, the compression rope 1104 has a small tension, and when the temperature decreases, the tension of the compression rope 1104 increases, and the pressure on the cold guide fin 2 increases, avoiding the shaking of the cold guide fin 2, so as to adapt to the fin shaking caused by the installation or different shrinkage ratios of different materials at low temperature when the refrigeration equipment faces temperature changes at high and low temperatures.

[0085] In some examples, when two cold guide fins 2 on the refrigerant pipe 1 are arranged at an angle, a plurality of refrigerant pipes 1 are arranged in sequence to form a group, and multiple groups of refrigerant pipes 1 are arranged in order, cooperating with the newly added air separation plate 13 to form the refrigeration space 1301 layout. Two air separation plates 13 are arranged on the sides of the two ends of the refrigerant pipe 1, forming a relatively closed refrigeration space 1301, and all the refrigerant pipes 1 are located in the space.

[0086] The angle arranged cooling fin 2 itself has a three-dimensional heat exchange characteristic, can form a stronger local cold field in a limited space, and the air baffle 13 can reduce the air convection interference between the inside and outside of the refrigeration space 1301, and avoid the meaningless diffusion of cold to the non-target area of the refrigeration cavity 1001. At the same time, the air flow driven by the circulating fan 12 will be concentrated to flow through the gap between each group of refrigerant pipes 1 and the angle area of the cooling fin 2 under the constraint of the air baffle 13, forcing the air flow to fully contact the fin and then reorienting out of the refrigeration space 1301, so as to improve the cold utilization efficiency.

[0087] The multiple groups of refrigerant pipes 1 form multiple layers of refrigeration teams in the refrigeration space 1301, and the three-dimensional distribution of the angle fin can break the limitations of laminar flow of air flow, so that the cold can be more evenly penetrated into the air flow. Compared with the planar heat exchange of coplanar fins, this structure is more suitable for scenes requiring rapid cooling, can increase the cooling rate in the refrigeration space 1301, and adapt to the differentiated refrigeration needs of different areas when the refrigeration cavity 1001 has gradient cooling needs.

[0088] The cooperation of the air baffle 13 and the angle cooling fin 2 not only strengthens the local heat exchange intensity by using the fin structure, but also improves the directional transmission efficiency of cold by space constraint. In cooperation with the circulating fan 12, the refrigeration rack 11 and other components, the refrigeration equipment can have more flexible local temperature control capability while ensuring the overall refrigeration effect, especially suitable for complex storage scenes in industrial warehouses that have different low temperature requirements for different areas.

[0089] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and not to limit it. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A refrigeration appliance characterized in that, The application relates to a refrigerant pipe, which comprises a refrigerant pipe (1) and a cooling fin (2), the refrigerant pipe (1) has a refrigerant channel (101), the inner wall of the refrigerant channel (101) is provided with a plurality of turbulence cooling portions (102) arranged in a circle, a flow-limiting groove (103) is formed between two adjacent turbulence cooling portions (102), the cooling fin (2) is arranged on the outer periphery of the refrigerant pipe (1) and extends along the axial direction of the refrigerant pipe (1), and the cooling fin (2) is integrally formed with the refrigerant pipe (1). A pipe end joint (5) is arranged at the end of the refrigerant pipe (1), the pipe end joint (5) has a welding end (501) and a plug-in end (502), the welding end (501) is used for welding with the end of the refrigerant pipe (1), the pipe end joint (5) has a transition pipe cavity (503), the cross-sectional area of the transition pipe cavity (503) gradually increases from the welding end (501) to the plug-in end (502), and the cross-sectional shape of the transition pipe cavity (503) is consistent with that of the refrigerant channel (101). A plug-in elbow pipe (6) is arranged at the plug-in end (502) of the pipe end joint (5), the plug-in elbow pipe (6) is used for connecting two adjacent refrigerant pipes (1). The inner wall of the transition pipe cavity (503) is provided with a plurality of turbulence steps (505) arranged at intervals along the axial line of the transition pipe cavity (503) and a pressure bearing portion (506) arranged opposite to the turbulence steps (505), the turbulence steps (505) are located on the large-diameter side of the bend of the plug-in elbow pipe (6) after the pipe end joint (5) is plugged into the plug-in elbow pipe (6), and are used for disturbing and destroying the vortex of the refrigerant medium, and the pressure bearing portion (506) is located on the small-diameter side of the bend of the plug-in elbow pipe (6) and is used for bearing the pressure of the refrigerant medium when the refrigerant medium is turned. The cooling fin (2) is provided in two, and the two cooling fins (2) are symmetrically arranged on the outer side of the refrigerant pipe (1) and are arranged at an angle or in a plane.

2. A refrigeration appliance as claimed in claim 1, characterised in that, The refrigerant pipe (1) further comprises a cooling frame (3) which is sleeved on the outer periphery of the refrigerant pipe (1) and the cooling fin (2) and is integrally formed with the refrigerant pipe (1) and the cooling fin (2), the opposite sides of the cooling frame (3) are respectively provided with a plug-in groove (301) and a plug-in portion (302), the plug-in portion (302) is used for plugging into the plug-in portion (302) of the adjacent cooling frame (3) to make the cooling frames (3) be plugged into each other to form a cooling plate, and the cooling plate is used for carrying materials.

3. A refrigeration appliance as defined in claim 1, wherein, ​ ​ 4. A refrigeration appliance as defined in claim 1, wherein, The inner wall of the transition cavity (503) also has a deceleration surface (507), which is located between two adjacent turbulence steps (505). The pressure-bearing part (506) has a pressure-bearing surface (508). From the welding end (501) of the pipe end connector (5) to the insertion end (502), the pressure-bearing surface (508) gradually approaches the axis of the pipe end connector (5). The angle between the deceleration surface (507) and the axis of the pipe end connector (5) is greater than the angle between the axis of the pipe end connector (5) and the pressure-bearing surface (508). The centerline of the transition cavity (503) is set at an angle to the axis of the pipe end connector (5).

5. A refrigeration appliance as defined in claim 1, wherein, The outer wall of the pipe end connector (5) has a welding step (509), the end of the insertion elbow (6) abuts against the welding step (509), the outer diameter of the welding step (509) is larger than the outer diameter of the end of the insertion elbow (6), and the refrigeration equipment further includes: A fixing bracket (7) has a fixing hole (701) through which the plug-in end (502) passes; The shock-absorbing ring (8) is embedded in the inner wall of the fixing hole (701) and sleeved on the outer periphery of the plug end (502); The sealing ring (9) is embedded in the inner wall of the shock-absorbing ring (8). There are two sealing rings (9). The two sealing rings (9) are spaced apart along the axial direction of the fixing hole (701) and are respectively sleeved on the outer periphery of the plug-in elbow (6) and the pipe end connector (5).

6. A refrigeration appliance as claimed in claim 5, characterised in that, Also includes: A refrigeration box (10) having a refrigeration chamber (1001); Support frame (14), there are several support frames (14), and they are arranged in sequence in the refrigeration cavity (1001). A passage gap (201) is formed between the cooling fins (2) on the refrigerant pipe (1) fixed on two adjacent fixed brackets (7). A circulating fan (12) is disposed in the refrigeration chamber (1001) and is directed toward the passage gap (201).

7. A refrigeration appliance as claimed in claim 6, characterised in that, When the two cooling fins (2) on the refrigerant pipe (1) are coplanar, the refrigeration equipment further includes a refrigeration rack (11), which includes: The fixing bracket (1101) consists of two brackets, which are symmetrically arranged on the outside of the two cooling fins (2) on the refrigerant pipe (1). The two fixing brackets (1101) have fixing grooves (1102) on their adjacent sides respectively. The two cooling fins (2) on the same refrigerant pipe (1) are respectively inserted into the fixing grooves (1102) on the two fixing brackets (1101). A connecting bolt (1103) passes through two of the fixing brackets (1101) and is used to fix the relative position of the two fixing brackets (1101). The connecting bolt (1103) is located between two adjacent refrigerant pipes (1). A clamping rope (1104) is provided on one side of the fixed frame (1101) and pressed against the outer edge of the cooling fin (2).

8. A refrigeration appliance as defined in claim 6, wherein, When the two cooling fins (2) on the refrigerant pipe (1) are set at an included angle, a number of refrigerant pipes (1) are arranged in a group from top to bottom, and a number of groups of refrigerant pipes (1) are arranged in the horizontal direction. The refrigeration equipment also includes: There are two air baffles (13), which are respectively set on both sides of several sets of refrigerant pipes (1). The two air baffles (13) form a refrigeration space (1301), and the refrigerant pipes (1) are set in the refrigeration space (1301).

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