Transition pipe assembly, refrigerating system and refrigerating equipment

Abstract

The utility model relates to the technical field of refrigeration equipment, and discloses a transition pipe assembly, a refrigeration system and refrigeration equipment, the transition pipe assembly comprises a transition pipe, a first connecting pipe and a second connecting pipe, the transition pipe is made of a transparent material, and the two ends of the transition pipe are respectively provided with an assembling part; the first connecting pipe is connected to the assembling part at one end of the transition pipe and is used for connecting a capillary pipe; and the second connecting pipe is connected to the assembly part at the other end of the transition pipe and is used for connecting an input pipe of the evaporator. The transition pipe is made of the transparent material, so that the state of the refrigerant in the transition pipe can be conveniently observed, the noise reduction design can be specifically carried out, the operation noise generated by the refrigeration system is fundamentally reduced, and the use experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration equipment, in particular to a transition pipe component, a refrigeration system and refrigeration equipment. Background Art

[0002] Refrigerators are commonly used refrigeration equipment. In the refrigerator's refrigeration system, the capillary tube of the throttling component is connected to the input pipe of the evaporator through a transition tube. At the inlet of the evaporator, the refrigerant is a saturated liquid mixed with a certain amount of flash bubbles. The two-phase refrigerant enters the evaporator from the capillary tube to form a jet, which is very likely to produce injection turbulence noise and cavitation breakage noise. The transition tube is usually a metal tube with good heat exchange performance such as a copper tube or an aluminum tube. It is a non-transparent material. Since the working conditions of the refrigerator change all the time, it is impossible to understand the state of the refrigerant in the transition tube, and therefore it is impossible to carry out targeted noise reduction design according to the actual situation. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a transition pipe assembly, which uses a transition pipe made of a transparent material, which is conducive to observing the state of the refrigerant.

[0004] The utility model also provides a refrigeration system with the transition pipe assembly.

[0005] The utility model also provides a refrigeration device having the refrigeration system.

[0006] According to the transition pipe assembly of the first aspect of the utility model, the transition pipe includes a transition pipe, a first connecting pipe and a second connecting pipe. The transition pipe is made of a transparent material, and assembly parts are respectively provided at both ends of the transition pipe; the first connecting pipe is connected to the assembly part at one end of the transition pipe and is used to connect a capillary; the second connecting pipe is connected to the assembly part at the other end of the transition pipe and is used to connect an input pipe of an evaporator.

[0007] The refrigerator according to the embodiment of the utility model has at least the following beneficial effects:

[0008] The capillary tube, the first connecting tube, the transition tube, the second connecting tube and the input tube of the evaporator are connected in sequence, and assembly parts are provided at both ends of the transition tube, and the first connecting tube and the second connecting tube are respectively connected to the two assembly parts, so that the transition tube can be conveniently connected to the first connecting tube and the second connecting tube, and the assembly of the transition tube assembly is convenient. The transition tube is set to a transparent material, which can facilitate the observation of the state of the refrigerant in the transition tube, so that the noise reduction design can be carried out in a targeted manner, the operating noise of the refrigeration system can be reduced, and the user experience can be improved.

[0009] According to some embodiments of the first aspect of the utility model, the evaporator includes a refrigerant tube, a plurality of fins are connected to the refrigerant tube, and a ferrite coating is provided on the surface of the refrigerant tube.

[0010] According to some embodiments of the first aspect of the utility model, the transition pipe includes an inner pipe and an outer pipe, the assembly parts are arranged at both ends of the inner pipe, the outer pipe is arranged around the inner pipe, and a sealed cavity is formed between the outer pipe and the inner pipe, and the sealed cavity is filled with pressurized gas.

[0011] According to some embodiments of the first aspect of the present invention, the pressure of the pressurized gas is P, satisfying: P = P 0 +(P 1 -P 0 ) / 2, where P 0 is standard atmospheric pressure, the P 1 is the pressure of the refrigerant in the input pipe.

[0012] According to some embodiments of the first aspect of the utility model, the assembly portion includes a plug-in tube and a locking piece, the locking piece is connected to the first connecting tube or the second connecting tube, the end of the plug-in tube is provided with a first conical surface, and the first connecting tube and the second connecting tube are both provided with a second conical surface matching the first conical surface.

[0013] According to some embodiments of the first aspect of the utility model, a sealing gasket is provided between the first tapered surface and the second tapered surface.

[0014] According to some embodiments of the first aspect of the utility model, the inner diameter of the plug-in tube, the inner diameter of the first connecting tube and the inner diameter of the second connecting tube are consistent in size.

[0015] According to some embodiments of the first aspect of the utility model, the locking member is a nut, the nut is connected to the plug-in tube, and the outer walls of the first connecting tube and the second connecting tube are provided with external threads matching the nut.

[0016] According to some embodiments of the first aspect of the utility model, the nut is arranged around the plug-in tube, a retaining ring is provided on the outer wall of the plug-in tube, a limiting groove is provided on the inner wall of the nut, and the retaining ring is inserted into the limiting groove to limit the nut.

[0017] A refrigeration system according to an embodiment of the second aspect of the utility model comprises the transition pipe assembly described in the embodiment of the first aspect.

[0018] The refrigeration system according to the embodiment of the utility model has at least the following beneficial effects:

[0019] The refrigeration system includes a compressor, a condenser, a throttling device, a transition pipe assembly and an evaporator which are connected in sequence through pipelines. Refrigerant is arranged in the pipeline. The compressor drives the refrigerant to flow in the pipeline so that the refrigerant can circulate in the pipeline, thereby reducing the temperature of the air. By setting a transition pipe made of transparent material, it is convenient to observe the state of the refrigerant in the transition pipe, so that targeted noise reduction design can be carried out to reduce the generation of noise and improve the user experience of the refrigeration system.

[0020] The refrigeration device according to the embodiment of the third aspect of the utility model includes the refrigeration system described in the embodiment of the second aspect.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 It is a structural schematic diagram of a transition pipe assembly according to an embodiment of the first aspect of the utility model;

[0024] Figure 2 yes Figure 1 A local enlarged view of point A;

[0025] Figure 3 A schematic structural diagram of a transition pipe of a transition pipe assembly according to an embodiment of the first aspect of the utility model;

[0026] Figure 4 It is another structural schematic diagram of the transition duct assembly of the first aspect of the utility model;

[0027] Figure 5 yes Figure 4 A partial enlarged view of point B.

[0028] The figures are as follows:

[0029] Transition pipe 100, assembly portion 110, plug-in pipe 111, first tapered surface 112, sealing gasket 113, nut 114, retaining ring 115, limiting groove 116, inner pipe 120, outer pipe 130, sealing cavity 140;

[0030] A first connecting pipe 200, a second tapered surface 210, and an external thread 220;

[0031] The second connecting pipe 300 . DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] In the description of the utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0035] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0036] Refrigeration equipment is equipment used to lower the temperature, such as refrigerators, freezers, air conditioners, etc. Refrigerators are equipment used to provide a stable low-temperature environment to refrigerate and freeze food or other items to extend their shelf life. They are common household appliances. In related technologies, the refrigeration system of a refrigerator usually uses compression cycle refrigeration to lower the temperature, including a compressor, a condenser, a throttling device and an evaporator. The refrigerant circulates in the compressor, condenser, throttling device and evaporator to achieve refrigeration. The throttling component is mainly a capillary tube, which is connected to the input pipe of the evaporator through a transition tube. When the refrigerant enters the evaporator from the capillary tube, it is a saturated liquid in an ideal state, and is mixed with a certain amount of flash bubbles, which makes it easy for the refrigerant to generate injection turbulence noise and cavitation breakage noise when it flows, resulting in a large operating noise of the refrigeration equipment, which reduces the user experience.

[0037] The existing transition tube is usually a metal tube with good heat exchange performance such as a copper tube or an aluminum tube, which makes it difficult to understand the state of the refrigerant in the transition tube, and thus it is impossible to carry out targeted noise reduction design according to the state of the refrigerant. The current noise reduction method is mainly to wrap the sound-absorbing cotton to block the propagation of noise, but this method cannot reduce the generation of noise and the noise reduction effect is not good.

[0038] The refrigeration equipment may be a refrigerator, a freezer or an air conditioner, or may be other forms of products. The following refrigeration equipment is described using a refrigerator as an example.

[0039] The embodiment of the first aspect of the utility model proposes a transition pipe assembly, which uses a transition pipe made of transparent material, so that the state of the refrigerant in the transition pipe can be easily understood, so that a noise reduction solution can be designed in a targeted manner, the generation of noise can be reduced, and the user experience of the refrigerator can be improved.

[0040] It is understandable that, referring to Figure 1 and Figure 2 The transition pipe assembly proposed in the embodiment of the first aspect of the utility model includes a transition pipe 100, a first connecting pipe 200 and a second connecting pipe 300. The transition pipe 100 is made of a transparent material, and assembly parts 110 are provided at both ends of the transition pipe 100; the first connecting pipe 200 is connected to the assembly part 110 at one end of the transition pipe 100, and is used to connect the capillary; the second connecting pipe 300 is connected to the assembly part 110 at the other end of the transition pipe 100, and is used to connect the input pipe of the evaporator.

[0041] The capillary tube, the first connecting tube 200, the transition tube 100, the second connecting tube 300 and the input tube of the evaporator are connected in sequence. The two ends of the transition tube 100 are respectively provided with assembly parts 110. The first connecting tube 200 and the second connecting tube 300 are respectively connected to an assembly part 110. By providing the assembly part 110, the first connecting tube 200, the second connecting tube 300 and the transition tube 100 can be conveniently installed together, and the assembly of the transition tube assembly is convenient. By providing the transition tube 100 of transparent material, when the refrigerant flows from the capillary tube to the evaporator, the state of the refrigerant in the transition tube 100 can be conveniently observed, and the operating state of the refrigeration system can be understood, so that the noise reduction design can be carried out in a targeted manner, the noise generation can be reduced from the root, the noise generated by the flow of the refrigerant can be reduced, and the user experience can be improved.

[0042] It should be noted that the transition duct 100 can be made of acrylic or other transparent materials such as glass, which is not specifically limited here. By providing a transparent transition duct 100, the state of the refrigerant in the transition duct 100 can be easily observed, thereby facilitating noise reduction design and improving the noise reduction effect.

[0043] After knowing the state of the refrigerant through the transition tube 100, the refrigerant can be made to flow smoothly in the transition tube 100 by controlling the flow rate of the refrigerant or controlling the operating state of the compressor, so as to reduce the generation of injection turbulence, make the flow of the refrigerant smooth, reduce the noise generated by the collision between the refrigerant and the inner wall of the transition tube 100, and reduce the possibility of cavitation, prevent the noise generated by cavitation breakage, so that targeted noise reduction design can be carried out to reduce the generation of noise from the source.

[0044] It is understandable that after noise reduction design is performed according to the state of the refrigerant in the transparent transition tube 100, the transition tube 100 made of transparent material can be replaced with metal tubes with better heat exchange performance such as copper tubes or aluminum tubes, thereby improving the structural strength of the transition tube assembly, extending its service life, and improving the reliability of the transition tube assembly.

[0045] It is understandable that the refrigerant flows in the transition pipe 100, and the pressure of the refrigerant is usually relatively high, so that the pressure difference between the inside and outside of the transition pipe 100 is relatively large, resulting in a relatively large pressure on the transition pipe 100. In order to prevent the refrigerant from leaking in the transition pipe 100, it is necessary to increase the structural strength of the transition pipe 100, such as selecting a stronger material, increasing the wall thickness of the transition pipe 100, or optimizing the shape and structure of the transition pipe 100, so as to improve the structural strength and rigidity of the transition pipe 100.

[0046] In addition, refer to Figure 1 and Figure 3 The transition pipe 100 may also adopt a sleeve structure, including an inner pipe 120 and an outer pipe 130, wherein the outer pipe 130 surrounds the inner pipe 120, and a sealed cavity 140 is formed between the outer pipe 130 and the inner pipe 120, and the sealed cavity 140 is filled with pressurized gas. The transition pipe 100 includes an inner pipe 120 and an outer pipe 130, wherein the outer pipe 130 is arranged around the inner pipe 120, and a sealed cavity 140 is formed between the outer pipe 130 and the inner pipe 120, and both ends of the inner pipe 120 are respectively connected to the first connecting pipe 200 and the second connecting pipe 300, and by filling the sealed cavity 140 with pressurized gas, the pressure difference between the inner side and the outer side of the inner pipe 120 is reduced, the deformation of the inner pipe 120 is reduced, the possibility of refrigerant leakage due to the rupture of the inner pipe 120 is reduced, and the reliability of the transition pipe 100 is improved.

[0047] The inner side of the outer tube 130 is pressurized gas, and the outer side of the outer tube 130 is air. By filling the sealed cavity 140 with pressurized gas, the pressure difference between the inner side and the outer side of the outer tube 130 is increased, the tension on the inner tube 120 is reduced, and the possibility of the outer tube 130 being squeezed and ruptured is reduced, the structural strength of the outer tube 130 is improved, and the reliability of the transition tube 100 is improved. In addition, by arranging the outer tube 130 around the inner tube 120, the pressurized gas in the sealed cavity 140 can be used as a sound insulation medium, which can block the propagation of noise, reduce the noise transmission of the refrigerant in the inner tube 120, and improve the sound insulation effect of the transition tube 100.

[0048] It should be noted that the shape of the outer tube 130 can be cylindrical, which reduces the manufacturing difficulty and production cost of the transition tube 100. The two ends of the outer tube 130 can also be set to be tapered to reduce the stress concentration of the outer tube 130, reduce the possibility of the outer tube 130 breaking, and improve the reliability of the outer tube 130.

[0049] It is understandable that, referring to Figure 1 and Figure 3 , the pressure of the pressurized gas is P, satisfying: P = P 0 +(P 1 -P 0 ) / 2, where P 0 is standard atmospheric pressure, P 1 is the pressure of the refrigerant in the input pipe. By setting the pressure of the pressurized gas P to satisfy P = P 0 +(P 1 -P 0 ) / 2, so as to reduce the pressure difference between the inner and outer sides of the outer tube 130 and the pressure difference between the inner and outer sides of the inner tube 120, reduce the stress on the transition tube 100, reduce the deformation of the transition tube 100, improve the reliability of the transition tube 100, extend the service life of the transition tube 100, and reduce the possibility of refrigerant leakage due to the rupture of the transition tube 100.

[0050] It should be noted that by setting P = P 0 +(P 1 -P 0 ) / 2, so that the pressure P in the sealed cavity 140 is greater than the atmospheric pressure P 0 , so as to reduce the possibility of the inner tube 120 deforming outward, reduce the risk of the inner tube 120 bursting due to the pressure of the refrigerant, improve the reliability of the transition tube 100, and improve the safety of the use of the transition tube assembly.

[0051] The pressure P in the sealed cavity 140 may have a deviation of 10% to improve the yield of the transition tube 100 , reduce the difficulty of processing the transition tube 100 , and improve production efficiency.

[0052] It is understandable that, referring to Figure 1 and Figure 2 The assembly portion 110 includes a plug-in tube 111 and a locking piece, the locking piece is used to fix the first connecting tube 200 and the second connecting tube 300, the end of the plug-in tube 111 is provided with a first conical surface 112, the first connecting tube 200 and the second connecting tube 300 are provided with a second conical surface 210 matching the first conical surface 112, and the first conical surface 112 and the second conical surface 210 are provided to cooperate with each other to increase the contact area between the transition tube 100 and the first connecting tube 200 and the second connecting tube 300, so as to improve the sealing performance of the transition tube 100 and the first connecting tube 200, and the sealing performance of the transition tube 100 and the second connecting tube 300, reduce the possibility of refrigerant leakage, and facilitate the assembly of the first connecting tube 200 and the second connecting tube 300, and guide the first connecting tube 200 and the second connecting tube 300 to align, thereby improving the convenience of connection.

[0053] The angle between the generatrix of the first conical surface 112 and the axis is greater than or equal to 20 degrees and less than or equal to 40 degrees. The second conical surface 210 matches the first conical surface 112 so that the first conical surface 112 and the second conical surface 210 can be smoothly abutted together, thereby enabling the first connecting pipe 200, the second connecting pipe 300 and the transition pipe 100 to be stably connected, thereby improving the reliability of the transition pipe assembly and reducing the possibility of refrigerant leakage.

[0054] The included angle between the generatrix of the first conical surface 112 and the axis can be set to 30 degrees, so that the interface of the transition pipe 100, the first connecting pipe 200 and the second connecting pipe 300 can be easily processed, and the sealing performance can be improved, thereby improving the reliability of the transition pipe assembly.

[0055] It is understandable that, referring to Figure 1 and Figure 2 A sealing gasket 113 is provided between the first conical surface 112 and the second conical surface 210. The sealing gasket 113 is provided between the first conical surface 112 and the second conical surface 210. By providing the sealing gasket 113, the gap between the first conical surface 112 and the second conical surface 210 is reduced to improve the sealing degree between the first conical surface 112 and the second conical surface 210, reduce the possibility of refrigerant leakage from the gap between the first conical surface 112 and the second conical surface 210, and improve the reliability of the transition pipe assembly.

[0056] It should be noted that the sealing gasket 113 may be formed by solidifying a sealant, and the sealant is disposed between the first conical surface 112 and the second conical surface 210 so that the sealant can solidify between the first conical surface 112 and the second conical surface 210 to form the sealing gasket 113, thereby reducing the gap between the first conical surface 112 and the second conical surface 210 and improving the sealing between the first conical surface 112 and the second conical surface 210. The sealing gasket 113 may also be a separate gasket, such as a rubber gasket, a silicone gasket, etc.

[0057] It is understandable that, referring to Figure 1 and Figure 2 , the inner diameter of the plug-in tube 111, the inner diameter of the first connecting tube 200 and the inner diameter of the second connecting tube 300 are consistent. By setting the inner diameter of the plug-in tube 111, the inner diameter of the first connecting tube 200 and the inner diameter of the second connecting tube 300 to be consistent, the refrigerant can flow smoothly in the first connecting tube 200, the plug-in tube 111 and the second connecting tube 300, and the impact noise generated by the refrigerant at the connection between the first connecting tube 200 and the plug-in tube 111, and at the connection between the second connecting tube 300 and the plug-in tube 111 can be avoided, thereby reducing the possibility of cavitation of the refrigerant, reducing the noise generated by the flow of the refrigerant, and improving the flow stability of the refrigerant.

[0058] In addition, by setting the inner diameter of the plug-in tube 111, the inner diameter of the first connecting tube 200 and the inner diameter of the second connecting tube 300 to be consistent, turbulence of the refrigerant at the connection between the first connecting tube 200 and the plug-in tube 111 and at the connection between the plug-in tube 111 and the second connecting tube 300 can be avoided, thereby reducing the impact of the refrigerant on the connection, reducing the possibility of refrigerant leakage, and improving the reliability of the transition tube assembly.

[0059] It is understandable that, referring to Figure 1 and Figure 2 The assembly part 110 further includes a nut 114, which is a locking member. The nut 114 is installed on the plug-in tube 111, and the outer walls of the first connecting tube 200 and the second connecting tube 300 are provided with external threads 220 that match the nut 114. The nut 114 is installed on the plug-in tube 111, and the outer walls of the first connecting tube 200 and the second connecting tube 300 are both provided with external threads 220. The nut 114 and the external threads 220 are threadedly connected, so that the plug-in tube 111 and the first connecting tube 200, as well as the plug-in tube 111 and the second connecting tube 300 can be quickly connected together, which facilitates the quick disassembly and assembly of the first connecting tube 200, the second connecting tube 300 and the transition tube 100, and facilitates the maintenance of the transition tube assembly.

[0060] It should be noted that sealant is connected between the nut 114 and the external thread 220. By providing the sealant, the nut 114 and the external thread 220 can be tightly connected together, reducing the possibility of loosening of the nut 114 and the external thread 220, improving the connection stability between the first connecting pipe 200, the second connecting pipe 300 and the transition pipe 100, reducing the possibility of loosening, reducing the possibility of refrigerant leakage, and improving the reliability of the transition pipe assembly.

[0061] It is understandable that, referring to Figure 1 and Figure 2 The nut 114 surrounds the plug-in tube 111, and a retaining ring 115 is provided on the outer wall of the plug-in tube 111. A limiting groove 116 is provided on the inner wall of the nut 114, and the retaining ring 115 is inserted into the limiting groove 116 to limit the nut 114. The outer wall of the plug-in tube 111 is provided with a retaining ring 115, and the nut 114 surrounds the plug-in tube 111 so that the retaining ring 115 can be inserted into the limiting groove 116. The nut 114 is screwed into the external thread 220 so that the retaining ring 115 can abut against the bottom wall of the limiting groove 116, thereby limiting the position of the nut 114, so that the nut 114 can be stably in the plug-in tube 111, reducing the possibility of the nut 114 loosening, and improving the connection stability between the first connecting tube 200, the second connecting tube 300 and the plug-in tube 111.

[0062] It should be noted that by screwing the nut 114 into the external thread 220 of the first connecting tube 200 or the second connecting tube 300, the first connecting tube 200 or the second connecting tube 300 can be driven to move toward the direction close to the plug-in tube 111, so that the retaining ring 115 can abut against the side wall of the limiting groove 116, thereby enabling the first conical surface 112 and the second conical surface 210 to fit tightly together, thereby improving the connection stability between the first conical surface 112 and the second conical surface 210 and improving the reliability of the transition tube assembly.

[0063] It is understandable that, referring to Figure 4 and Figure 5 The nut 114 can also be fixed on the outer wall of the plug-in tube 111, and the external thread 220 of the first connecting tube 200 or the second connecting tube 300 can be screwed into the nut 114, so that the first connecting tube 200 and the second connecting tube 300 can be quickly connected or disassembled, thereby improving the assembly convenience and reliability of the transition tube assembly and reducing the possibility of refrigerant leakage.

[0064] In addition, the locking piece may also be other structural fasteners, or the first connecting pipe 200, the second connecting pipe 300 and the transition pipe 100 may also be manufactured in an integral molding manner, thereby eliminating the need for connection via fasteners, thereby preventing refrigerant from leaking from the connection between the first connecting pipe 200 and the plug-in pipe 111, or the connection between the second connecting pipe 300 and the plug-in pipe 111, thereby improving the sealing of the connection and improving the reliability of the transition pipe assembly.

[0065] It can be understood that the refrigeration system provided in the embodiment of the second aspect of the utility model includes the transition pipe assembly of the embodiment of the first aspect of the utility model.

[0066] The refrigeration system includes a compressor, a condenser, a throttling device, a transition pipe assembly and an evaporator connected in sequence through pipelines. A refrigerant is arranged in the pipeline. The refrigerant gas is compressed by the compressor, and then the high-temperature and high-pressure refrigerant obtained after compression is input into the condenser. The refrigerant is cooled by the condenser. The medium-temperature and high-pressure refrigerant output by the condenser is input into the throttling device. The throttling device is a capillary tube. The refrigerant is depressurized by the capillary tube to reduce the temperature and pressure of the refrigerant. The low-temperature and low-pressure refrigerant flows through the first connecting pipe 200, the transition pipe 100 and the second connecting pipe 300 in sequence. The transparent transition pipe 100 can be used to conveniently observe the state of the refrigerant. Then the refrigerant enters the evaporator. The refrigerant evaporates in the evaporator and absorbs the heat of the outside air, thereby reducing the temperature of the air to obtain a stable low-temperature environment for refrigerating or freezing food. Finally, the refrigerant flows back to the compressor to complete a cycle. The compressor runs continuously, providing power for the refrigerant, driving the refrigerant to circulate in the pipeline, and providing a stable low-temperature environment.

[0067] By providing a transparent transition tube 100, the state of the refrigerant can be easily observed, so that the refrigerant flow rate or the operating state of the compressor can be specifically adjusted according to the flow state of the refrigerant, so that the refrigerant flows smoothly, the noise generated by the flow of the refrigerant is reduced, and the operating stability of the refrigeration system is improved.

[0068] It can be understood that the refrigeration equipment proposed in the embodiment of the third aspect of the utility model includes the refrigeration system proposed in the embodiment of the second aspect of the utility model. The refrigeration system is arranged inside the refrigeration equipment. The compressor sucks in and compresses the refrigerant. Then, the high-temperature and high-pressure refrigerant obtained after compression is input into the condenser. The condenser is used to cool the refrigerant. The medium-temperature and high-pressure refrigerant output by the condenser is input into the capillary tube. The refrigerant is depressurized by the capillary tube, so that the refrigerant entering the evaporator becomes a low-pressure liquid with a lower saturation temperature. The refrigerant evaporates in the evaporator and absorbs heat from the outside air, thereby reducing the temperature of the refrigeration equipment.

[0069] Among them, the refrigeration equipment is a refrigerator, a freezer, etc. Since it has all the technical features of the refrigeration system of the embodiment of the utility model, it also has the beneficial effects of all the above-mentioned embodiments, which will not be repeated here.

[0070] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A transition pipe assembly, characterized in that: include: A transition pipe, the transition pipe is made of a transparent material, and both ends of the transition pipe are respectively provided with assembly parts; A first connecting pipe connected to the assembly portion at one end of the transition pipe and used for connecting a capillary tube; The second connecting pipe is connected to the assembly portion at the other end of the transition pipe and is used to connect the input pipe of the evaporator.

2. The transition duct assembly according to claim 1, characterized in that: The transition pipe comprises an inner pipe and an outer pipe, the assembly parts are arranged at both ends of the inner pipe, the outer pipe surrounds the inner pipe, and a sealed cavity is formed between the outer pipe and the inner pipe, and the sealed cavity is filled with pressurized gas.

3. The transition duct assembly according to claim 2, characterized in that: The pressure of the pressurized gas is P, which satisfies: P=P0+(P1-P0) / 2, wherein P0 is the standard atmospheric pressure, and P1 is the pressure of the refrigerant in the input pipe.

4. The transition duct assembly according to claim 1, characterized in that: The assembly portion includes a plug-in tube and a locking piece, the locking piece is connected to the first connecting tube or the second connecting tube, the end of the plug-in tube is provided with a first conical surface, and the first connecting tube and the second connecting tube are both provided with a second conical surface matching the first conical surface.

5. The transition duct assembly according to claim 4, characterized in that: A sealing gasket is arranged between the first tapered surface and the second tapered surface.

6. The transition duct assembly according to claim 4, characterized in that: The inner diameter of the plug tube, the inner diameter of the first connecting tube and the inner diameter of the second connecting tube are consistent in size.

7. The transition duct assembly according to claim 4, characterized in that: The locking member is a nut, the nut is connected to the plug-in tube, and the outer walls of the first connecting tube and the second connecting tube are provided with external threads matching the nut.

8. The transition duct assembly according to claim 7, characterized in that: The nut is arranged around the plug-in tube, a retaining ring is arranged on the outer wall of the plug-in tube, a limiting groove is arranged on the inner wall of the nut, and the retaining ring is clamped in the limiting groove to limit the nut.

9. A refrigeration system, characterized in that: The invention comprises the transition duct assembly according to any one of claims 1 to 8.

10. Refrigeration equipment, characterized in that Comprising the refrigeration system as claimed in claim 9.

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