A refrigerator that is easy to disassemble and maintain

Abstract

The present invention relates to the technical field of refrigerators, and in particular to a refrigerator that is easy to disassemble and maintain, including a cabinet body, wherein an evaporator, a condenser, a compressor, and a capillary tube are arranged inside the cabinet body, and further comprising: a separation device for extracting the refrigerant; the separation device includes a suction mechanism and four reversing mechanisms. The present invention can isolate the evaporator or condenser to be disassembled from the circulation pipeline of the refrigerator through the cut-off mechanism in the reversing mechanism, and then connect the evaporator or condenser with the switching mechanism through the reversing mechanism, and then through the suction mechanism, the refrigerant remaining in the evaporator or condenser can be extracted and temporarily stored in the inner side of the cylinder of the suction mechanism, so that when the evaporator or condenser is disassembled, the refrigerant remaining inside can be prevented from leaking out, thereby avoiding the waste of refrigerant and avoiding the pollution of the environment caused by the refrigerant leakage.

Description

Technical Field

[0001] The present invention belongs to the technical field of refrigerators, and more specifically, relates to a refrigerator that is easy to disassemble, assemble and maintain. Background Art

[0002] Freezers are commonly used refrigeration equipment in life and production. The evaporator and condenser inside a large freezer require long-term circulation of refrigerant. Therefore, maintenance of the evaporator and condenser in the freezer is a necessary operation to ensure the long-term stable operation of the freezer, which can effectively avoid blockage of the evaporator and condenser.

[0003] After searching, a Chinese patent with announcement number: CN220229709U discloses a refrigerator condenser that is easy to disassemble and maintain, including a refrigerator body, a condenser is arranged on the side wall of the refrigerator body, water pipes are fixedly arranged on the side wall of the refrigerator body at both ends of the condenser, a fixing block is fixedly sleeved on one end of the water pipe close to the condenser, connecting blocks are fixedly sleeved on both ends of the condenser, circular grooves are opened on both sides of the fixing block, and connecting mechanisms that can facilitate the connection between the condenser and the water pipe are fixedly arranged in the two circular grooves.

[0004] Based on the above search and combined with actual problems, it was found that the two ends of the evaporator and condenser in the existing refrigerator are generally fixed to the circulation pipeline by welding. Therefore, when the evaporator and condenser are disassembled, maintained and replaced, cutting tools are required to assist, which greatly increases the difficulty of disassembly. Moreover, during disassembly, there is still refrigerant remaining in the evaporator and condenser. When the evaporator and condenser are disconnected from the circulation pipeline, the remaining refrigerant inside will leak, resulting in a waste of refrigerant. The leaked refrigerant will also pollute the environment. Summary of the invention

[0005] The main purpose of the present invention is to provide a refrigerator which is easy to disassemble and maintain.

[0006] According to a first aspect of the present invention, there is provided a refrigerator that is easy to disassemble and maintain, comprising a cabinet, wherein an evaporator, a condenser, a compressor, and a capillary tube are arranged inside the cabinet, and further comprising: a separation device for extracting refrigerant; the separation device comprises a suction mechanism and four reversing mechanisms, and the four reversing mechanisms are respectively connected to the two ends of the evaporator and the condenser; the suction mechanism comprises a cylinder arranged inside the cabinet, a piston is slidably connected to the inner side of the cylinder, and a switching mechanism is arranged at one end of the cylinder, and the switching mechanism is used to switch the cylinder to communicate with the evaporator or the condenser; the reversing mechanism comprises a shell, a shell flow channel and a suction chamber are opened through the inside of the shell, a first valve core that can move up and down is arranged on the inner side of the suction chamber, and the suction chamber is divided into an upper chamber and a lower chamber by the first valve core, the upper chamber is provided with a vent hole connected to the outside, a connecting flow channel and a reversing flow channel are opened inside the first valve core, one end of the suction chamber is connected to the switching mechanism, and a cut-off mechanism is also arranged inside the shell.

[0007] According to the first aspect of the present invention, the refrigerator is described in an embodiment that is easy to disassemble and maintain. The switching mechanism includes an end cylinder fixed at one end of the cylinder body, the inner side of the end cylinder is rotatably connected to a rotating column, one end of the rotating column is fixed with a rotating shaft extending to the outside of the end cylinder, and one end of the end cylinder is also connected to two main pipes, one end of the two main pipes is respectively connected to an evaporator pipe and a condenser pipe, the two ends of the evaporator pipe are respectively connected to the lower chamber in the reversing mechanism located at the two ends of the evaporator, the two ends of the condenser pipe are respectively connected to the lower chamber in the reversing mechanism located at the two ends of the condenser, and the interior of the rotating column is provided with a suction flow channel that can be respectively connected to the interiors of the two main pipes.

[0008] According to the refrigerator that is easy to disassemble and maintain as described in the embodiment of the first aspect of the present invention, the shut-off mechanism includes a shut-off cavity opened inside the shell and connected to the shell flow channel, the inner side of the shut-off cavity is slidably connected to the second valve core, and one end of the shut-off cavity is rotatably connected to the second valve core screw through a thread, and one end of the second valve core screw is rotatably connected to one end of the second valve core.

[0009] According to the refrigerator that is easy to disassemble and maintain as described in the embodiment of the first aspect of the present invention, an automatic blocking mechanism that can block the reversing flow channel is arranged inside the first valve core, and the automatic blocking mechanism includes a spring tube fixed at one end of the first valve core, and the inner side of the spring tube is slidably connected with a slide rod extending to the outside of the shell, and a spring convex ring located on the inner side of the spring tube is fixed to the outer side of the slide rod, one end of the spring convex ring is elastically connected to the inner end of the spring tube through a return spring, and one end of the slide rod is fixed with a shut-off valve column that can extend to the inside of the reversing flow channel.

[0010] According to the refrigerator that is easy to disassemble and maintain as described in the embodiment of the first aspect of the present invention, one end of the outer side of the shell is connected to an internal threaded tube through threaded rotation, one end of the internal threaded tube is fixed with a hexagonal nut, the inner side of the hexagonal nut is fixed with a first retaining ring, and one end of the outer side of the evaporator is fixed with a second retaining ring aligned with the first retaining ring.

[0011] According to the refrigerator that is easy to disassemble, assemble and maintain as described in the embodiment of the first aspect of the present invention, a sealing ring is fixed to one end of the second baffle ring.

[0012] According to the refrigerator easy to disassemble, assemble and maintain described in the embodiment of the first aspect of the present invention, a rotating block is fixed to one side of the rotating shaft, and two limiting blocks are fixed to one end of the end cylinder.

[0013] According to the refrigerator that is easy to disassemble, assemble and maintain as described in the embodiment of the first aspect of the present invention, a lever is fixed to one end of the rotating shaft.

[0014] According to the refrigerator easy to disassemble and maintain described in the embodiment of the first aspect of the present invention, a first valve core screw is inserted into one end of the suction chamber through threaded rotation, and one end of the first valve core screw is rotatably connected to one end of the first valve core.

[0015] According to the refrigerator easy to disassemble, assemble and maintain described in the embodiment of the first aspect of the present invention, one end of the cylinder is rotatably connected to a piston screw extending to the outside of the cabinet through a thread, and one end of the piston screw is rotatably connected to one end of the piston.

[0016] One of the above technical solutions of the present invention has at least one of the following advantages or beneficial effects:

[0017] The present invention can isolate the evaporator or condenser to be disassembled from the circulation pipeline of the refrigerator through the cut-off mechanism in the reversing mechanism, and then connect the evaporator or condenser with the switching mechanism through the reversing mechanism, and then through the suction mechanism, the refrigerant remaining in the evaporator or condenser can be extracted and temporarily stored in the inner side of the cylinder of the suction mechanism. Therefore, when the evaporator or condenser is disassembled, the refrigerant remaining inside can be prevented from leaking out, thereby avoiding the waste of refrigerant and preventing the refrigerant leakage from causing pollution to the environment.

[0018] Secondly, the present invention uses an automatic blocking mechanism. As the refrigerant in the evaporator or condenser is gradually extracted, the internal pressure decreases. When the negative pressure inside the evaporator or condenser reaches a certain value, the automatic blocking mechanism can block the reversing flow channel in the reversing mechanism, thereby preventing the pressure in the evaporator or condenser from further decreasing, preventing the evaporator or condenser from being deformed or damaged due to excessive pressure difference, and thus prompting maintenance personnel to stop extracting refrigerant from the evaporator or condenser.

[0019] At the same time, the present invention drives the hexagonal nut to move through the internal threaded tube, and the hexagonal nut can drive the first retaining ring inside it to press against the second retaining ring. When the first retaining ring is pressed on one end of the second retaining ring, the shell of the reversing mechanism can be quickly connected to one end of the evaporator or condenser. When the first retaining ring is separated from the second retaining ring, the shell of the reversing mechanism can be quickly separated from one end of the evaporator or condenser, thereby greatly reducing the difficulty of disassembly and assembly of the evaporator or condenser. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments;

[0021] Figure 1 is a schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0022] Figure 2 is a first cross-sectional structural schematic diagram of an embodiment of the present invention;

[0023] Figure 3 is a second cross-sectional structural schematic diagram of an embodiment of the present invention;

[0024] Figure 4 For the embodiment of the present invention Figure 3 A schematic diagram of the enlarged structure at B in the middle;

[0025] Figure 5 It is a structural schematic diagram of the switching mechanism and the cut-off mechanism in the isolated state in an embodiment of the present invention;

[0026] Figure 6 is a schematic cross-sectional structural diagram of a suction mechanism in an embodiment of the present invention;

[0027] Figure 7 For the embodiment of the present invention Figure 6 Schematic diagram of the enlarged structure at C in the middle;

[0028] Figure 8 For the embodiment of the present invention Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0029] Reference numerals:

[0030] 1. Cabinet; 2. Evaporator; 3. Condenser; 4. Compressor; 5. Capillary; 6. Evaporator pipe; 7. Main pipe; 8. Cylinder; 9. Piston; 10. End cylinder; 11. Rotating column; 12. Suction channel; 13. Rotating shaft; 14. Push rod; 15. Rotating block; 16. Limit block; 17. Piston screw; 18. Condenser pipe; 101. Shell; 102. Shell channel; 103. Suction chamber; 104. The first valve core; 105, the connecting flow channel; 106, the reversing flow channel; 107, the first valve core screw; 108, the shut-off chamber; 109, the second valve core; 110, the second valve core screw; 201, the spring tube; 202, the sliding rod; 203, the spring convex ring; 204, the return spring; 205, the shut-off valve column; 301, the internal threaded tube; 302, the hexagonal nut; 303, the first retaining ring; 304, the second retaining ring; 305, the sealing ring. DETAILED DESCRIPTION

[0031] 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 represent the same or similar elements or elements having the same or similar functions from beginning to end. 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.

[0032] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated 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 should not be understood as a limitation on the present invention.

[0033] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used 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.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be internal connection between two elements, indirect connection, or an interactive relationship between two elements.

[0036] The following disclosure provides many different embodiments or examples for implementing different solutions of the present invention.

[0037] Reference Figures 1 to 8 As shown, the present invention provides a refrigerator that is easy to disassemble and maintain, including a cabinet body 1, wherein an evaporator 2, a condenser 3, a compressor 4, and a capillary tube 5 are arranged inside the cabinet body 1, and further comprising: a separation device for extracting the refrigerant; the separation device comprises a suction mechanism and four reversing mechanisms, and the four reversing mechanisms are respectively connected to the two ends of the evaporator 2 and the condenser 3; the suction mechanism comprises a cylinder body 8 arranged inside the cabinet body 1, and a piston 9 (such as Figure 6 As shown in the figure, one end of the cylinder 8 is rotatably connected to a piston screw 17 extending to the outside of the cabinet 1 through a thread, one end of the piston screw 17 is rotatably connected to one end of the piston 9, and one end of the cylinder 8 is provided with a switching mechanism, which is used to switch the cylinder 8 to be connected with the evaporator 2 or the condenser 3; the reversing mechanism includes a shell 101, and a shell flow channel 102 and a suction chamber 103 are opened inside the shell 101, and a first valve core 104 that can move up and down is provided inside the suction chamber 103, and The suction chamber 103 is divided into an upper chamber and a lower chamber by the first valve core 104. The upper chamber is provided with a vent hole connected to the outside. The interior of the first valve core 104 is provided with a connecting flow channel 105 and a reversing flow channel 106. One end of the suction chamber 103 is connected to the switching mechanism, and the other end of the suction chamber 103 is provided with a first valve core screw 107 through threaded rotation. One end of the first valve core screw 107 is rotatably connected to one end of the first valve core 104. A cut-off mechanism is also provided inside the shell 101.

[0038] The input end of the compressor 4 is connected to one end of the evaporator 2 through a reversing mechanism, and the output end of the compressor 4 is connected to one end of the condenser 3 through a reversing mechanism. Both ends of the capillary tube 5 are connected to the other ends of the evaporator 2 and the condenser 3 respectively through the reversing mechanism.

[0039] In some embodiments of the present invention, the switching mechanism includes an end cylinder 10 (such as Figure 7As shown in the figure, the inner side of the end cylinder 10 is rotatably connected with a rotating column 11, one end of the rotating column 11 is fixed with a rotating shaft 13 extending to the outside of the end cylinder 10, one end of the end cylinder 10 is also connected with two main pipes 7, one end of the two main pipes 7 is respectively connected with an evaporator pipe 6 and a condenser pipe 18, the two ends of the evaporator pipe 6 are respectively connected with the lower chambers in the reversing mechanism at the two ends of the evaporator 2, the two ends of the condenser pipe 18 are respectively connected with the lower chambers in the reversing mechanism at the two ends of the condenser 3, and the interior of the rotating column 11 is provided with a suction flow channel 12 which can be respectively connected with the interiors of the two main pipes 7;

[0040] When the lever 14 of the switching mechanism is rotated toward the side of the evaporator pipe 6, the lever 14 drives the rotating column 11 to rotate a certain angle through the rotating shaft 13, and the rotating column 11 connects the suction channel 12 inside it with a main pipe 7 close to the side of the evaporator pipe 6. At this time, the suction channel 12 connects the cylinder 8 with the two reversing mechanisms at both ends of the evaporator 2, and the refrigerant in the evaporator 2 can be extracted. When the lever 14 is rotated toward the side of the condenser pipe 18, the lever 14 drives the rotating column 11 to rotate a certain angle in the opposite direction through the rotating shaft 13, and the rotating column 11 connects the suction channel 12 inside it with a main pipe 7 close to the side of the condenser pipe 18. At this time, the suction channel 12 connects the cylinder 8 with the two reversing mechanisms at both ends of the condenser 3, which improves the flexibility of use and can extract the refrigerant in the evaporator 2 or the condenser 3 as needed.

[0041] In some embodiments of the present invention, the shutoff mechanism includes a shutoff chamber 108 opened inside the housing 101 and communicating with the housing flow channel 102, a second valve core 109 is slidably connected to the inner side of the shutoff chamber 108, and one end of the shutoff chamber 108 is rotatably connected to a second valve core screw 110 through a thread, and one end of the second valve core screw 110 is rotatably connected to one end of the second valve core 109;

[0042] When the evaporator 2 or the condenser 3 needs to be disassembled for maintenance or replacement, it is necessary to first operate the shut-off mechanism in the reversing mechanism located at both ends of the evaporator 2 or the condenser 3, and rotate the second valve core screw 110 of the shut-off mechanism. The second valve core screw 110 rotates and drives the second valve core 109 to move inside the shut-off chamber 108 through the thread, so that the second valve core 109 moves to the other end of the shut-off chamber 108 until the second valve core 109 can completely block the shell flow channel 102 and one end port of the shell 101, thereby isolating the refrigerant remaining in the evaporator 2 from other circulation pipelines, thereby preventing the refrigerant in the circulation pipeline from leaking when the evaporator 2 or the condenser 3 is disassembled.

[0043] In some embodiments of the present invention, an automatic blocking mechanism that can block the reversing flow channel 106 is provided inside the first valve core 104, and the automatic blocking mechanism includes a spring cylinder 201 fixed at one end of the first valve core 104, and a slide rod 202 extending to the outside of the housing 101 is slidably connected through the inner side of the spring cylinder 201, and a spring convex ring 203 located on the inner side of the spring cylinder 201 is fixed to the outer side of the slide rod 202, and one end of the spring convex ring 203 is elastically connected to one end of the inner side of the spring cylinder 201 through a return spring 204, and a cut-off valve column 205 that can extend to the inner side of the reversing flow channel 106 is fixed to one end of the slide rod 202;

[0044] Through the automatic blocking mechanism, as the refrigerant in the evaporator 2 or the condenser 3 is gradually extracted, the internal pressure decreases. When the negative pressure inside the evaporator 2 or the condenser 3 reaches a certain value, the automatic blocking mechanism can block the reversing flow channel 106 in the reversing mechanism, thereby preventing the pressure in the evaporator 2 or the condenser 3 from further decreasing, and preventing the evaporator 2 or the condenser 3 from being deformed and damaged due to excessive pressure difference, thereby prompting maintenance personnel to stop extracting refrigerant from the evaporator 2 or the condenser 3.

[0045] In some embodiments of the present invention, an outer end of the shell 101 is connected to an internal threaded barrel 301 by threaded rotation, a hexagonal nut 302 is fixed to one end of the internal threaded barrel 301, a first baffle ring 303 is fixed to the inner side of the hexagonal nut 302, a second baffle ring 304 aligned with the first baffle ring 303 is fixed to one end of the outer end of the evaporator 2, and a sealing ring 305 is fixed to one end of the second baffle ring 304;

[0046] The hexagonal nut 302 is driven to move by the internal threaded tube 301, and the hexagonal nut 302 can drive the first retaining ring 303 inside it to press against the second retaining ring 304. When the first retaining ring 303 is pressed on one end of the second retaining ring 304, the shell 101 of the reversing mechanism can be quickly connected to one end of the evaporator 2 or the condenser 3. When the first retaining ring 303 is separated from the second retaining ring 304, the shell 101 of the reversing mechanism can be quickly separated from one end of the evaporator 2 or the condenser 3, thereby greatly reducing the difficulty of disassembling and assembling the evaporator 2 or the condenser 3.

[0047] In some embodiments of the present invention, a rotating block 15 is fixed to one side of the rotating shaft 13, two stop blocks 16 are fixed to one end of the end cylinder 10, and a lever 14 is fixed to one end of the rotating shaft 13;

[0048] The two limit blocks 16 of the switching mechanism can limit the rotating block 15. When the rotating block 15 abuts against one of the limit blocks 16, the suction channel 12 can be aligned and connected with one of the main pipes 7. When the rotating block 15 abuts against the other limit block 16, the suction channel 12 can be aligned and connected with the other main pipe 7, which is more convenient to operate during disassembly.

[0049] When the refrigerator is operating normally, the reversing mechanism Figure 4 In the state shown, the communication channel 105, the shell channel 102, and the cut-off cavity 108 are interconnected, so that the two ports of the shell 101 are interconnected. At this time, the refrigerant in the evaporator 2, the condenser 3, the compressor 4, and the capillary tube 5 can circulate normally;

[0050] When the evaporator 2 needs to be disassembled for maintenance or replacement, it is necessary to first operate the shutoff mechanism in the two reversing mechanisms at both ends of the evaporator 2, and rotate the second valve core screw 110 of the shutoff mechanism. The second valve core screw 110 rotates and drives the second valve core 109 to move inside the shutoff chamber 108 through the thread, so that the second valve core 109 moves to the other end of the shutoff chamber 108 until the second valve core 109 can completely block the shell flow channel 102 and one end port of the shell 101, so that the refrigerant remaining in the evaporator 2 can be isolated from other circulation pipelines, and then the first valve core screw 107 in the reversing mechanism is rotated. The first valve core screw 107 drives the first valve core 104 to move inside the suction chamber 103 through the thread, so that one end of the reversing flow channel 106 is aligned with the other end port of the shell 101, so that the connecting flow channel 105 is isolated from the shell flow channel 102 and the other end port of the shell 101. At this time, the evaporator 2 can be connected with the evaporator connecting pipe 6 in the switching mechanism through the reversing flow channel 106;

[0051] Then, the lever 14 is used to rotate the rotating shaft 13 of the switching mechanism, and the rotating shaft 13 drives the rotating column 11 to rotate. When the refrigerant in the evaporator 2 needs to be sucked, the lever 14 is rotated toward the side where the evaporator pipe 6 is located. If the refrigerant in the condenser 3 needs to be sucked, the lever 14 is rotated toward the side where the condenser pipe 18 is located. When the lever 14 is rotated toward the side where the evaporator pipe 6 is located, the lever 14 drives the rotating column 11 to rotate a certain angle through the rotating shaft 13, and the rotating column 11 connects the suction flow channel 12 inside it with a side close to the evaporator pipe 6. The main pipe 7 is connected, and at this time, the suction flow channel 12 connects the cylinder 8 with the two reversing mechanisms at both ends of the evaporator 2, and then the piston screw 17 of the suction mechanism is rotated, and the piston screw 17 drives the piston 9 to move through the thread, so that the space inside the cylinder 8 is enlarged, forming a negative pressure state, so that the gaseous or liquid refrigerant remaining in the evaporator 2 can be sucked into the inside of the evaporator pipe 6 through the reversing flow channel 106, and then sucked into the inside of the suction flow channel 12 through the main pipe 7 connected with the evaporator pipe 6, and finally sucked into the inside of the cylinder 8 for temporary storage;

[0052] As the refrigerant in the evaporator 2 is gradually extracted, the pressure in the evaporator 2 decreases, so the pressure in the reversing flow channel 106 and the lower chamber connected to the inside of the evaporator 2 also decreases. Therefore, a pressure difference is generated at both ends of the slide bar 202 of the automatic blocking mechanism, and the slide bar 202 moves toward the inside of the lower chamber and compresses the return spring 204, while driving the shut-off valve column 205 to move toward the inside of the reversing flow channel 106. When the inside of the evaporator 2 reaches a certain negative pressure, the shut-off valve column 205 can just completely block the reversing flow channel 106, and at this time, the evaporator 2 and the lower chamber are connected. The suction mechanism is completely isolated. At this time, most of the refrigerant remaining in the evaporator 2 is extracted and separated. Then, the hexagonal nut 302 is rotated, and the hexagonal nut 302 drives the internal threaded barrel 301 to rotate. The internal threaded barrel 301 can be separated from one end of the shell 101 by rotation, so that the evaporator 2 can be quickly disassembled. Since the refrigerant in the evaporator 2 is separated and temporarily stored in the barrel 8 of the suction mechanism, a large amount of refrigerant will not leak when the evaporator 2 is disassembled, thereby avoiding the waste of refrigerant and avoiding the pollution of the environment caused by the refrigerant leakage.

[0053] When the condenser 3 needs to be disassembled for maintenance or replacement, the suction chambers 103 in the two reversing mechanisms at both ends of the condenser 3 are switched to communicate with each other through the above principle, and the lever 14 of the switching mechanism is moved toward the side of the condenser pipe 18, so that the suction flow channel 12 is connected with the main pipe 7 close to the condenser pipe 18, so that the refrigerant in the condenser 3 can be collected inside the cylinder 8 of the suction mechanism for storage;

[0054] The two limit blocks 16 of the switching mechanism can limit the rotating block 15. When the rotating block 15 abuts against one of the limit blocks 16, the suction channel 12 can be aligned and connected with one of the main pipes 7. When the rotating block 15 abuts against the other limit block 16, the suction channel 12 can be aligned and connected with the other main pipe 7, which is more convenient to operate during disassembly.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A refrigerator that is easy to disassemble, assemble and maintain, comprising a cabinet body (1), wherein an evaporator (2), a condenser (3), a compressor (4) and a capillary tube (5) are arranged inside the cabinet body (1), characterized in that: Also includes: A separation device for extracting the refrigerant; The separation device comprises a suction mechanism and four reversing mechanisms connected at both ends of the evaporator (2) and the condenser (3); The suction mechanism comprises a cylinder (8) arranged inside the cabinet (1), a piston (9) being slidably connected to the inner side of the cylinder (8), and a switching mechanism is arranged at one end of the cylinder (8), wherein the switching mechanism can switch the cylinder (8) to be connected to the evaporator (2) or the condenser (3) respectively; The reversing mechanism comprises a shell (101), the shell (101) having a shell flow channel (102) and a suction chamber (103) extending therethrough, the suction chamber (103) having a first valve core (104) movable up and down arranged on the inner side thereof, the suction chamber (103) being divided into an upper chamber and a lower chamber by the first valve core (104), the upper chamber being provided with a vent hole communicating with the outside, the first valve core (104) being provided with a connecting flow channel (105) and a reversing flow channel (106), one end of the suction chamber (103) being communicated with the switching mechanism, and a cut-off mechanism being further arranged inside the shell (101); The switching mechanism comprises an end cylinder (10) fixed at one end of the cylinder body (8), the inner side of the end cylinder (10) is rotatably connected to a rotating column (11), one end of the rotating column (11) is fixed to a rotating shaft (13) extending to the outside of the end cylinder (10), one end of the end cylinder (10) is also connected to two main pipes (7), one end of the two main pipes (7) is respectively connected to an evaporator pipe (6) and a condenser pipe (18), the two ends of the two evaporator pipes (6) are respectively connected to the suction chambers (103) in the reversing mechanism located at the two ends of the evaporator (2), the two ends of the condenser pipe (18) are respectively connected to the suction chambers (103) in the reversing mechanism located at the two ends of the condenser (3), and the interior of the rotating column (11) is provided with suction channels (12) which can be respectively connected to the interiors of the two main pipes (7); The cut-off mechanism comprises a cut-off chamber (108) which is opened inside the housing (101) and communicates with the housing flow channel (102); a second valve core (109) is slidably connected to the inner side of the cut-off chamber (108); one end of the cut-off chamber (108) is rotatably connected to a second valve core screw (110) via a thread; one end of the second valve core screw (110) is rotatably connected to one end of the second valve core (109); An automatic blocking mechanism capable of blocking the reversing flow channel (106) is arranged inside the first valve core (104), the automatic blocking mechanism comprising a spring cylinder (201) fixed at one end of the first valve core (104), a slide rod (202) extending to the outside of the housing (101) and slidably connected to the inner side of the spring cylinder (201), a spring convex ring (203) located inside the spring cylinder (201) is fixed to the outer side of the slide rod (202), one end of the spring convex ring (203) is elastically connected to the inner end of the spring cylinder (201) via a return spring (204), and a shut-off valve column (205) capable of extending to the inner side of the reversing flow channel (106) is fixed to one end of the slide rod (202).

2. The refrigerator that is easy to disassemble and maintain according to claim 1, characterized in that: An outer end of the shell (101) is connected to an internal threaded barrel (301) by means of a threaded rotation, a hexagonal nut (302) is fixed to one end of the internal threaded barrel (301), a first retaining ring (303) is fixed to the inner side of the hexagonal nut (302), and a second retaining ring (304) aligned with the first retaining ring (303) is fixed to an outer end of the evaporator (2).

3. The refrigerator that is easy to disassemble and maintain according to claim 2, characterized in that: A sealing ring (305) is fixed to one end of the second retaining ring (304).

4. The refrigerator that is easy to disassemble and maintain according to claim 1, characterized in that: A rotating block (15) is fixed to one side of the rotating shaft (13), and two limiting blocks (16) are fixed to one end of the end cylinder (10).

5. The refrigerator that is easy to disassemble and maintain according to claim 1, characterized in that: A shifting rod (14) is fixed to one end of the rotating shaft (13).

6. The refrigerator that is easy to disassemble and maintain according to claim 1, characterized in that: A first valve core screw (107) is inserted into one end of the suction chamber (103) through threaded rotation, and one end of the first valve core screw (107) is rotationally connected to one end of the first valve core (104).

7. The refrigerator that is easy to disassemble and maintain according to claim 1, characterized in that: One end of the cylinder (8) is rotatably connected to a piston screw (17) extending to the outside of the cabinet (1) through a thread, and one end of the piston screw (17) is rotatably connected to one end of the piston (9).

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