A multi-stage progressive evaporator interconnection structure for a vehicle-mounted refrigerator

Abstract

This utility model discloses a connecting structure for a multi-stage progressive evaporator in a vehicle refrigerator, relating to the technical field of evaporator connecting structures. It includes connecting pipes disposed at both ends of the main body of the connecting structure. Connecting screws are installed inside both the main body of the connecting structure and the connecting pipes. Limiting grooves are provided on the outside of the connecting screws, and ejection springs are installed inside the limiting grooves. A limiting block is installed at one end of the ejection spring. This device, by installing the ejection spring in conjunction with the limiting block, can lock the fixing nut, effectively preventing the fixing nut from rotating and loosening, thus avoiding affecting the tightness of the connection between the multi-stage progressive evaporator of the vehicle refrigerator and external equipment, preventing leakage and abnormal noise. The installation of an anti-slip bracket, in conjunction with the limiting boss, can prevent the connecting screw from rotating, thus fixing the connecting screw and enhancing the stability of the connection between the fixing nut and the connecting screw.

Description

Technical Field

[0001] This utility model relates to the technical field of evaporator connection structure, specifically a multi-stage progressive evaporator connection structure for a vehicle refrigerator. Background Technology

[0002] The multi-stage progressive evaporator is a key component of the refrigeration system in a car refrigerator. Its function is to transfer heat from the refrigerator's interior to the refrigerant, thereby lowering the refrigerator's temperature. The working principle of the multi-stage progressive evaporator is similar to that of a regular evaporator. The compressor compresses the refrigerant into a high-temperature, high-pressure gas, which, after being cooled by the condenser, becomes a high-pressure liquid. This liquid then passes through a capillary tube for throttling and pressure reduction before entering the multi-stage progressive evaporator. Inside the evaporator, the low-pressure liquid refrigerant absorbs heat from the refrigerator's interior and evaporates, becoming a gaseous refrigerant, thus achieving the cooling effect. The gradually changing diameter of the multi-stage progressive tubes helps the refrigerant absorb heat more evenly during evaporation, improving cooling efficiency. When using the multi-stage progressive evaporator, a connecting structure is required to facilitate connection with external devices.

[0003] However, existing multi-stage progressive evaporators for car refrigerators are frequently subjected to bumps and vibrations when used in a car, which can cause the screws at the top of the multi-stage progressive evaporator connection structure to loosen. This can affect the tightness of the connection between the multi-stage progressive evaporator and external devices, easily leading to leakage and abnormal noise. Therefore, this does not meet the current requirements. To address this, we propose a new connection structure for multi-stage progressive evaporators for car refrigerators. Utility Model Content

[0004] The purpose of this utility model is to provide a connecting structure for a multi-stage progressive evaporator in a vehicle refrigerator, in order to solve the problem mentioned in the background art that the multi-stage progressive evaporator in a vehicle refrigerator is often subjected to bumps and vibrations when used in a car, which causes the screws at the upper end of the connecting structure of the multi-stage progressive evaporator in the vehicle refrigerator to easily loosen, thereby affecting the tightness of the connection between the multi-stage progressive evaporator in the vehicle refrigerator and the external device, and easily causing leakage and abnormal noise.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage progressive evaporator connection structure for a vehicle-mounted refrigerator, comprising a main body of the connection structure:

[0006] A connecting pipe is provided at both ends of the main body of the connecting structure. Connecting screws are installed inside both the main body of the connecting structure and the connecting pipe. A limit groove is provided on the outside of the connecting screw. An ejection spring is installed inside the limit groove. A limit block is installed at one end of the ejection spring.

[0007] A fixing nut is installed on the outside of the connecting screw. The connecting screw and the fixing nut are connected by threads. The fixing nut has an anti-rotation groove inside. Anti-slip brackets are installed inside both ends of the main body of the connecting structure. The anti-slip brackets have limit bosses inside.

[0008] Preferably, a sealing ring is installed between the main body of the connecting structure and the connecting pipe, and the sealing ring is connected to both the main body of the connecting structure and the connecting pipe through a slot.

[0009] Preferably, the limiting block has a retraction groove inside.

[0010] Preferably, the limiting block is externally equipped with an anti-sway protrusion, which is fixedly connected to the limiting block, and the anti-sway protrusion is slidably connected to the connecting screw through a slot.

[0011] Preferably, the ejector spring is fixedly connected to the limiting groove, the limiting block is fixedly connected to the ejector spring, and the limiting block and the connecting screw are slidably connected through the groove.

[0012] Preferably, the limiting boss is connected to the limiting groove, and the anti-slip plate is slidably connected to the fixing nut through the groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model uses an ejector spring to engage with a limiting block to hold the fixing nut in place, effectively preventing the fixing nut from spinning and loosening. This avoids affecting the tightness of the connection between the multi-stage progressive evaporator of the vehicle refrigerator and the external equipment, preventing leakage and abnormal noise. The anti-slip plate, in conjunction with the limiting boss, prevents the connecting screw from rotating, thus fixing the connecting screw and enhancing the stability of the connection between the fixing nut and the connecting screw.

[0015] 2. By setting a retraction groove, this utility model allows workers to press down the limiting block with a wire, causing the limiting block to retract into the limiting groove. This makes it easier for workers to install and fix the nut and the anti-slip plate, making the device more convenient to use. Attached Figure Description

[0016] Figure 1 This is a three-dimensional perspective view of a multi-stage progressive evaporator interconnection structure for a vehicle-mounted refrigerator according to the present invention;

[0017] Figure 2 This is an exploded view of the interconnected structure of a multi-stage progressive evaporator for a vehicle-mounted refrigerator according to this utility model.

[0018] Figure 3 This is a schematic diagram of the internal structure of the connecting screw of this utility model;

[0019] Figure 4 This is a three-dimensional perspective view of the fixing nut of this utility model.

[0020] In the diagram: 1. Connecting structure main body; 2. Connecting pipe; 3. Connecting screw; 4. Fixing nut; 5. Anti-slip clamping platform; 6. Limiting boss; 7. Sealing ring; 8. Limiting groove; 9. Ejection spring; 10. Limiting block; 11. Retraction groove; 12. Anti-sway boss; 13. Anti-rotation groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Please see Figure 1-4 One embodiment of this utility model is a multi-stage progressive evaporator connection structure for a vehicle-mounted refrigerator, comprising a connection structure body 1:

[0023] The connecting pipe 2 is located at both ends of the connecting structure body 1. Both the connecting structure body 1 and the connecting pipe 2 are equipped with connecting screws 3. The connecting screws 3 are provided with limit grooves 8 on the outside. The limit grooves 8 are equipped with ejector springs 9. The ejector springs 9 are installed so that they can cooperate with the limit block 10 to lock the fixing nut 4, effectively preventing the fixing nut 4 from rotating on its own and from loosening. This avoids affecting the tightness of the connection between the multi-stage progressive evaporator of the vehicle refrigerator and the external equipment, and prevents leakage and abnormal noise. The limit block 10 is installed at one end of the ejector spring 9.

[0024] The fixing nut 4 is installed on the outside of the connecting screw 3. The connecting screw 3 and the fixing nut 4 are connected by threads. The fixing nut 4 has an anti-rotation groove 13 inside. Anti-slip brackets 5 are installed inside both ends of the main body 1. Installing the anti-slip brackets 5 so that they cooperate with the limiting boss 6 can prevent the connecting screw 3 from rotating, thereby fixing the connecting screw 3 and enhancing the stability of the connection between the fixing nut 4 and the connecting screw 3. The anti-slip brackets 5 have a limiting boss 6 inside.

[0025] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4A sealing ring 7 is installed between the main body 1 of the connecting structure and the connecting pipe 2. The sealing ring 7 is connected to both the main body 1 of the connecting structure and the connecting pipe 2 through a slot. The limiting block 10 has a retraction groove 11 inside. The retraction groove 11 makes it easy for the operator to use a wire to press down on the limiting block 10, so that the limiting block 10 retracts into the limiting groove 8. This makes it easier for the operator to install the fixing nut 4 and the anti-slip plate 5, making the device more convenient to use. The limiting block 10 has an anti-sway protrusion 12 installed on its outside. The anti-sway protrusion 12 is fixedly connected to the limiting block 10. The anti-sway protrusion 12 is slidably connected to the connecting screw 3 through a slot. The ejection spring 9 is fixedly connected to the limiting groove 8. The limiting block 10 is fixedly connected to the ejection spring 9. The limiting block 10 is slidably connected to the connecting screw 3 through a slot. The limiting protrusion 6 is connected to the limiting groove 8. The anti-slip plate 5 is slidably connected to the fixing nut 4 through a slot.

[0026] Working principle: During use, the operator connects the main body 1 of the connecting structure to the connecting pipe 2 of the external equipment and the multi-stage progressive evaporator of the vehicle refrigerator. Then, the operator inserts the connecting screw 3 between the main body 1 of the connecting structure and the connecting pipe 2. Next, the operator inserts a wire into the retraction groove 11 and presses down the limiting block 10, causing the limiting block 10 to retract into the limiting groove 8. Then, the operator inserts the anti-slip plate 5 onto the outside of the connecting screw 3, so that the limiting protrusion 6 on the inner side of the anti-slip plate 5 engages with the limiting groove 8 on the outside of the connecting screw 3, thus securing the outside of the anti-slip plate 5 inside the main body 1 of the connecting structure. Finally, the operator screws the fixing nut 4 onto the outside of the connecting screw 3, so that the limiting block 10 inside the connecting screw 3 can engage with the anti-slip plate 10 on the inner side of the fixing nut 4. The device is equipped with a spring 9 for mounting and a limiting block 10 to hold the fixing nut 4 in place. This effectively prevents the fixing nut 4 from rotating on its own and from loosening, thus avoiding any impact on the tightness of the connection between the multi-stage progressive evaporator of the vehicle refrigerator and the external equipment, and preventing leakage and abnormal noise. The anti-slip plate 5, in conjunction with the limiting boss 6, prevents the connecting screw 3 from rotating and serves to fix the connecting screw 3, enhancing the stability of the connection between the fixing nut 4 and the connecting screw 3. The retraction groove 11 allows the operator to use a wire to press down on the limiting block 10, causing the limiting block 10 to retract into the limiting groove 8, making it easier for the operator to install the fixing nut 4 and the anti-slip plate 5, making the device more convenient to use.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A multi-stage progressive evaporator connection structure for a vehicle-mounted refrigerator, comprising a main body of the connection structure (1), characterized in that: A connecting pipe (2) is provided at both ends of the main body of the connecting structure (1). A connecting screw (3) is installed inside both the main body of the connecting structure (1) and the connecting pipe (2). A limit groove (8) is provided on the outside of the connecting screw (3). An ejection spring (9) is installed inside the limit groove (8). A limit block (10) is installed at one end of the ejection spring (9). A fixing nut (4) is installed on the outside of the connecting screw (3). The connecting screw (3) and the fixing nut (4) are connected by threads. The fixing nut (4) has an anti-spinning groove (13) inside. Anti-slip plates (5) are installed inside both ends of the main body of the connecting structure (1). The anti-slip plates (5) have a limit boss (6) inside.

2. The multi-stage progressive evaporator communication structure of a vehicle-mounted refrigerator according to claim 1, characterized in that: A sealing ring (7) is installed between the main body (1) of the connecting structure and the connecting pipe (2). The sealing ring (7) is connected to both the main body (1) of the connecting structure and the connecting pipe (2) through a slot.

3. The multi-stage progressive evaporator communication structure of a vehicle-mounted refrigerator according to claim 1, characterized in that: The limiting block (10) has a retraction groove (11) inside.

4. The multi-stage progressive evaporator communication structure of the vehicle-mounted refrigerator according to claim 1, characterized in that: The limiting block (10) is equipped with an anti-sway protrusion (12) on its outside. The anti-sway protrusion (12) is fixedly connected to the limiting block (10). The anti-sway protrusion (12) is slidably connected to the connecting screw (3) through a slot.

5. The multi-stage progressive evaporator communication structure of a vehicle-mounted refrigerator according to claim 1, characterized in that: The ejector spring (9) is fixedly connected to the limiting groove (8), the limiting block (10) is fixedly connected to the ejector spring (9), and the limiting block (10) is slidably connected to the connecting screw (3) through the groove.

6. The multi-stage progressive evaporator communication structure of a vehicle-mounted refrigerator according to claim 1, characterized in that: The limiting boss (6) is connected to the limiting groove (8), and the anti-slip plate (5) is slidably connected to the fixing nut (4) through the groove.

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