A refrigerator core convenient to replace

Abstract

This utility model discloses a refrigerator core that is easy to replace, belonging to the field of absorption refrigerator technology. It includes an absorption refrigerator core with a uniformly distributed locking mechanism installed on its surface. The locking mechanism includes a threaded tube, a tube clamp, and a hexagonal bolt. The tube clamp is sleeved on the surface of the absorption refrigerator core, and the tube clamp and hexagonal bolt are respectively located on both sides of the tube clamp. The shank of the hexagonal bolt passes through the tube clamp and is threadedly connected to the threaded tube. A positioning cavity is formed on the inner side of the threaded tube. Maintenance personnel only need to use a hexagonal sleeve to simultaneously release the positioning block and rotate the bolt in a single operation, greatly improving maintenance convenience. Simultaneously, the mechanical self-locking structure formed by the spring-preloaded right-angled triangular positioning block and the annular positioning cavity effectively resists the loosening torque of the hexagonal bolt, effectively solving the problem of traditional bolts easily loosening due to vibration.

Description

Technical Field

[0001] This utility model relates to the field of absorption refrigerator technology, specifically to a refrigerator core that is easy to replace. Background Technology

[0002] Absorption refrigerators are environmentally friendly refrigeration devices driven by heat. Their core technology achieves refrigeration through the physical cycle of ammonia-water-helium three-component solution. They do not require compressors or mechanical transmission parts, operate completely silently, and do not rely on ozone-depleting substances such as Freon.

[0003] Currently, most absorption refrigerators use a mounting bracket and threaded connectors for fixing the refrigerator's internal components. This method is advantageous due to its simple structure, ease of assembly and disassembly, and convenient replacement by maintenance personnel. However, in special application scenarios such as RVs, the confined space and constantly bumpy operating environment can cause the threaded connectors to loosen frequently due to vibration, leading to internal component displacement, abnormal noise, or even functional malfunctions. This design flaw significantly increases maintenance frequency and operational difficulty, requiring frequent tightening of screws or repositioning of the internal components, contradicting the core requirement of "low maintainability" for RV equipment.

[0004] Based on this, the present invention designs an easy-to-replace refrigerator core to solve the above problems. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a refrigerator core that is easy to replace.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A replaceable refrigerator mechanism includes an absorption refrigerator mechanism, wherein the surface of the absorption refrigerator mechanism is fitted with a uniformly distributed locking mechanism.

[0008] Furthermore, the locking mechanism includes a threaded tube, a tube clamp, and a hexagonal bolt. The tube clamp is sleeved on the surface of the absorption refrigerator core. The tube clamp and the hexagonal bolt are respectively located on both sides of the tube clamp. The shank of the hexagonal bolt passes through the tube clamp and is threadedly connected to the threaded tube. A positioning cavity is formed on the inner side of the threaded tube. An installation cavity communicating with the positioning cavity is formed on the surface of the hexagonal bolt. A positioning block that engages with the positioning cavity is slidably connected inside the installation cavity. A spring is provided between the positioning block and the installation cavity.

[0009] Furthermore, the positioning block has a right-angled triangle cross-sectional shape, and the inclined surface of the positioning block faces away from the pipe clamp.

[0010] Furthermore, the positioning cavity is annular in shape, and the vertical inner wall of the positioning cavity facing the pipe clamp contacts the vertical end face of the positioning block.

[0011] Furthermore, the spring is a rubber material component, and the spring is currently in a compressed state.

[0012] Furthermore, the end of the positioning block facing away from the positioning cavity has an installation groove, and the end of the spring facing the positioning cavity is engaged with the installation groove.

[0013] Furthermore, the surface of the hexagonal bolt is provided with a guide cavity that communicates with the mounting cavity, and an adjusting block that is fixedly connected to the positioning block is slidably connected inside the guide cavity, with one end of the adjusting block facing away from the adjusting block extending through the guide cavity.

[0014] Furthermore, the cross-sectional shape of the adjusting block and the guide cavity are both rectangular and matched, and the maximum movable distance of the adjusting block inside the guide cavity is greater than the maximum movable distance of the positioning block inside the mounting cavity.

[0015] Furthermore, the end of the adjusting block facing away from the positioning block has an inclined surface facing away from the pipe clamp, and the size of the inclined surface on the adjusting block is larger than the size of the inclined surface on the positioning block. Beneficial effects

[0016] First paragraph: The beneficial effects brought about by the first independent claim of this utility model;

[0017] 1. Maintenance personnel only need to use a hexagonal socket to simultaneously release the positioning block and rotate the bolt in one operation, greatly improving the convenience of maintenance; at the same time, the mechanical self-locking structure formed by the spring-preloaded right-angled triangular positioning block and the annular positioning cavity can effectively resist the loosening torque of the hexagonal bolt, effectively solving the problem of traditional bolts being prone to vibration and loosening.

[0018] 2. The positioning block is designed with a beveled surface facing away from the pipe clamp. When maintenance personnel install the hexagonal bolts, the beveled surface of the threaded pipe can be pressed back into the installation cavity by the edge of the threaded pipe, so that the positioning block can retract normally. When the hexagonal bolts are connected to the threaded pipes, the spring pushes the positioning block into the positioning cavity, which automatically locks the hexagonal bolts, further reducing the difficulty for maintenance personnel to replace and maintain the absorption refrigerator core. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1This is a schematic diagram showing the connection between the absorption-type refrigerator core and the locking mechanism in a refrigerator core that is easy to replace according to this utility model.

[0021] Figure 2 This is a schematic diagram of the locking mechanism in a refrigerator internals that is easy to replace, according to the present invention.

[0022] Figure 3 This is a cross-sectional schematic diagram of a locking mechanism in a refrigerator internals that is easy to replace, according to the present invention.

[0023] Figure 4 This is an exploded view of a locking mechanism in a refrigerator core that is easy to replace, according to the present invention.

[0024] The labels in the diagram represent:

[0025] 100. Absorption refrigerator core; 200. Locking mechanism; 210. Threaded pipe; 211. Positioning cavity; 220. Pipe clamp; 230. Hex bolt; 231. Mounting cavity; 232. Guide cavity; 240. Positioning block; 241. Mounting groove; 250. Spring; 260. Adjusting block. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] The present invention will be further described below with reference to the embodiments.

[0028] In some embodiments, please refer to the appendix to the instruction manual. Figure 1-4 A refrigerator core that is easy to replace includes an absorption refrigerator core 100, on the surface of which are evenly distributed locking mechanisms 200.

[0029] The absorption refrigerator core 100 consists of a generator, condenser, evaporator, absorber, and connecting pipes, forming a fully enclosed system with no moving mechanical parts. The generator separates ammonia gas by heating an ammonia solution. The condenser liquefies the ammonia gas into liquid ammonia. In the evaporator, the liquid ammonia mixes with helium and evaporates, absorbing heat to achieve refrigeration. The absorber redissolves ammonia gas to form a concentrated ammonia solution, which flows back to the generator. The system is filled with ammonia (refrigerant), water (absorbent), and helium (diffuser). Helium is used to reduce the partial pressure of ammonia in the evaporator, promoting evaporation efficiency.

[0030] The absorption refrigerator core 100 heats an ammonia solution in the generator via an external heat source. The ammonia evaporates and then liquefies in the condenser. The liquid ammonia mixes with helium in the evaporator and evaporates, absorbing heat and completing the refrigeration process. Subsequently, the ammonia-helium mixture enters the absorber, where the ammonia is absorbed by water to form a concentrated ammonia solution. This solution returns to the generator via thermosiphon effect for further decomposition, creating a continuous cycle. The entire process is driven by thermal energy, with the core reaction being the reversible decomposition of ammonia (NH4OH⇌NH3↑+H2O). No mechanical energy input is required, achieving quiet, multi-energy-adaptive, and environmentally friendly refrigeration.

[0031] like Figure 2 , Figure 3 and Figure 4 As shown, the locking mechanism 200 includes a threaded tube 210, a tube clamp 220, and a hexagonal bolt 230. The tube clamp 220 is sleeved on the surface of the absorption refrigerator core 100. The tube clamp 220 and the hexagonal bolt 230 are respectively disposed on both sides of the tube clamp 220. The shank of the hexagonal bolt 230 passes through the tube clamp 220 and is threadedly connected to the threaded tube 210. A positioning cavity 211 is formed on the inner side of the threaded tube 210, and a positioning cavity 211 is formed on the surface of the hexagonal bolt 230. A connecting mounting cavity 231 has a positioning block 240 that slides inside the mounting cavity 231 and engages with a positioning cavity 211. A spring 250 is provided between the positioning block 240 and the mounting cavity 231. The positioning block 240 has a right-angled triangular cross-section, with its inclined surface facing away from the pipe clamp 220. The positioning cavity 211 is annular in shape, with its vertical inner wall facing the pipe clamp 220 contacting the vertical end face of the positioning block 240. The spring 250... 0 is a rubber component, and spring 250 is in a compressed state at this time; the end of positioning block 240 facing away from positioning cavity 211 has a mounting groove 241, and the end of spring 250 facing positioning cavity 211 is engaged with mounting groove 241; the surface of hexagonal bolt 230 has a guide cavity 232 communicating with mounting cavity 231, and an adjusting block 260 fixedly connected to positioning block 240 is slidably connected inside guide cavity 232, and the end of adjusting block 260 facing away from adjusting block 240 passes through guide cavity 232; the cross-sectional shape of adjusting block 260 and guide cavity 232 are both matching rectangles, and the maximum movable distance of adjusting block 260 inside guide cavity 232 is greater than the maximum movable distance of positioning block 240 inside mounting cavity 231; the end of adjusting block 260 facing away from positioning block 240 has an inclined surface facing away from pipe clamp 220, and the size of the inclined surface on adjusting block 260 is greater than the size of the inclined surface on positioning block 240.

[0032] It should be noted that the threaded pipe 210 needs to be pre-fixed to the corresponding inner wall of the absorption refrigerator shell by welding. The head of the hex bolt 230 needs to be pre-cut with a cavity larger than the overall volume of the positioning block 240 and the adjusting block 260 connected together. After the installer has installed the positioning block 240, the spring 250 and the adjusting block 260 in place, the installer will put the metal sealing block that matches the cavity into the cavity and ensure that the side end of the metal sealing block abuts against the spring 250. Then the hex bolt 230 and the sealing block will be welded together by welding process to ensure that the positioning block 240, the spring 250 and the adjusting block 260 can operate stably.

[0033] In this embodiment of the utility model, when maintenance personnel need to quickly replace the absorption refrigerator core 100, they only need to insert a hexagonal sleeve that matches the head of the hexagonal bolt 230 onto the head of the hexagonal bolt 230. At this time, the hexagonal sleeve drives the positioning block 240 to separate from the positioning cavity 211 through the moving adjustment block 260. At this time, the hexagonal bolt 230 loses its lock. Then, the hexagonal sleeve drives the hexagonal bolt 230 to rotate accordingly. The hexagonal bolt 230 moves spirally towards the outside of the threaded tube 210 until the hexagonal bolt 230 is completely separated from the threaded tube 210. After all the hexagonal bolts 230 have been removed, the maintenance personnel can replace the absorption refrigerator core 100 normally.

[0034] After the maintenance personnel align the pipe clamp 220 on the replacement absorption refrigerator core 100 with the corresponding threaded pipe 210, they only need to insert the hex bolt 230 through the pipe clamp 220 and then thread it into the threaded pipe 210. When the inclined surface of the positioning block 240 contacts the corner of the threaded pipe 210, the corner of the threaded pipe 210 can push the positioning block 240 back into the installation cavity 231. When the hex bolt 230 is connected to the threaded pipe 210, the positioning cavity 211 is aligned with the installation cavity 231. The spring 250 pushes the positioning block 240 into the positioning cavity 211 and makes the vertical surface of the positioning cavity 211 and the positioning block 240 abut against each other. This can effectively prevent the hex bolt 230 from rotating and loosening outwards from the threaded pipe 210, and firmly lock the absorption refrigerator core 100 in its original position, thereby reducing the maintenance frequency of replacing the absorption refrigerator core 100.

[0035] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A replaceable refrigerator mechanism, comprising an absorption-type refrigerator mechanism (100), characterized in that: The surface of the absorption refrigerator core (100) is equipped with a uniformly distributed locking mechanism (200). The locking mechanism (200) includes a threaded tube (210), a tube clamp (220), and a hexagonal bolt (230). The tube clamp (220) is sleeved on the surface of the absorption refrigerator core (100). The tube clamp (220) and the hexagonal bolt (230) are respectively located on both sides of the tube clamp (220). The shank of the hexagonal bolt (230) passes through the tube clamp (220) and is threadedly connected to the threaded tube (210). A positioning cavity (211) is provided on the inner side of the threaded tube (210). An installation cavity (231) communicating with the positioning cavity (211) is provided on the surface of the hexagonal bolt (230). A positioning block (240) that engages with the positioning cavity (211) is slidably connected inside the installation cavity (231). A spring (250) is provided between the positioning block (240) and the installation cavity (231).

2. The easily replaceable refrigerator mechanism according to claim 1, characterized in that, The positioning block (240) has a right-angled triangle cross-section, and the inclined surface of the positioning block (240) faces away from the pipe clamp (220).

3. The easily replaceable refrigerator mechanism according to claim 2, characterized in that, The positioning cavity (211) is annular in shape, and the vertical inner wall of the positioning cavity (211) facing the pipe clamp (220) is in contact with the vertical end face of the positioning block (240).

4. The easily replaceable refrigerator mechanism according to claim 1, characterized in that, The spring (250) is a rubber material component, and the spring (250) is in a compressed state at this time.

5. The easily replaceable refrigerator mechanism according to claim 4, characterized in that, The positioning block (240) has an installation groove (241) at one end facing away from the positioning cavity (211), and the end of the spring (250) facing the positioning cavity (211) is engaged with the installation groove (241).

6. The easily replaceable refrigerator mechanism according to claim 1, characterized in that, The surface of the hexagonal bolt (230) is provided with a guide cavity (232) that communicates with the mounting cavity (231). Inside the guide cavity (232), there is an adjusting block (260) that is fixedly connected to the positioning block (240). One end of the adjusting block (260) facing away from the adjusting block (260) passes through the guide cavity (232).

7. The easily replaceable refrigerator mechanism according to claim 6, characterized in that, The cross-sectional shape of the adjusting block (260) and the guide cavity (232) are both rectangular and matched. The maximum movable distance of the adjusting block (260) inside the guide cavity (232) is greater than the maximum movable distance of the positioning block (240) inside the mounting cavity (231).

8. The easily replaceable refrigerator mechanism according to claim 7, characterized in that, The adjusting block (260) has an inclined surface facing away from the positioning block (240) at one end, and the size of the inclined surface on the adjusting block (260) is larger than the size of the inclined surface on the positioning block (240).

Images