Filling tank for refrigerant oil of automobile air conditioner

Abstract

The invention provides an automobile air conditioner refrigerant oil filling tank which comprises a tank body, a supporting shell, a sealing cover, a retaining ring, an upper protective cover and a quick connecting mechanism, the sealing cover is provided with a liquid outlet end which is horizontally arranged and communicated with the tank body, a liquid outlet port is in threaded connection with a sleeve, and the upper protective cover is clamped on the sealing cover; the quick connection mechanism comprises a clamping block and a quick connection insertion pipe, a through threaded connection hole is formed in the upper end of the clamping block, one end of the quick connection insertion pipe is in threaded connection with the threaded connection hole, the other end of the quick connection insertion pipe is provided with a clamping head part inserted into the sleeve, a limiting square pipe is arranged on the side face of the sealing cover, and a limiting head clamped and embedded with the limiting square pipe is arranged at the lower end of the clamping block; the sealing cover is further provided with a separation assembly for pushing the quick-connection insertion pipe out of the sleeve. The sleeve and the rapid connecting mechanism can be rapidly communicated, the whole conveying process is in a sealed state, refrigerant oil in the tank body is directly conveyed into the automobile air conditioner maintenance machine under the condition that the refrigerant oil does not make contact with outside air, and the situation that the refrigerant liquid is polluted by dust is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile air-conditioning maintenance, and relates to a filling tank for automobile air-conditioning refrigeration oil. Background Art

[0002] The lubricating oil used in air-conditioning compressors is called refrigeration oil or refrigeration oil. It is a special lubricating oil that can work normally under high and low temperature conditions. Its general functions are:

[0003] 1) Lubrication: It can lubricate the surface of moving parts of the compressor, reduce resistance and friction, reduce power consumption and extend service life.

[0004] 2) Cooling effect: It can promptly take away the heat generated by the friction of the moving surface to prevent the compressor from overheating or burning out.

[0005] 3) Sealing effect: Lubricating oil penetrates into the sealing surfaces of each friction part to form an oil seal, which prevents refrigerant leakage.

[0006] 4) Reduce compressor noise: Lubricating oil continuously flushes the friction surface, takes away the debris, and reduces the wear of friction parts.

[0007] The refrigeration oil is completely dissolved in the refrigerant in the air conditioning refrigeration system and circulates in the refrigeration system with the refrigerant. In order to ensure the reliable operation of the rotating moving parts inside the compressor, a certain amount of refrigeration oil must be added to the compressor and the air conditioning refrigeration system pipeline for lubrication to ensure the reliable operation of the air conditioning compressor. When the air conditioner is working, part of the refrigeration oil in the air conditioning refrigeration system exists in the compressor to lubricate the moving parts inside the compressor, and the other part of the refrigeration oil is dissolved in Freon and circulates in the refrigeration system pipeline with Freon. When the air conditioning equipment refrigeration system pipeline is reduced for some reason, the overall amount of refrigeration oil in the air conditioning refrigeration system will be reduced. When the amount of refrigeration oil is reduced to a certain extent, the refrigeration oil stored in the compressor to lubricate its moving parts will also be reduced accordingly. The compressor will burn and get stuck due to lack of oil and the internal parts cannot be reliably lubricated. In order to avoid such failure of the compressor, when the amount of refrigeration oil in the compressor of the air conditioning refrigeration system is detected to be low, a certain amount of refrigeration oil is added from the oil filling port of the compressor. The existing ones are filled by using a car air conditioning maintenance machine, the output pipe of the car air conditioning maintenance machine is connected to the oil filling port, and the input pipe of the car air conditioning maintenance machine is connected to the oil storage bottle. However, the upper end of the current oil storage bottle is open, the sealing is poor, and it is easy to enter dust and cause pollution when it is in contact with air for a long time. Summary of the invention

[0008] The purpose of the present invention is to address the above-mentioned problems in the existing technology and to propose a filling tank for automobile air-conditioning refrigeration oil, which has good sealing performance and a sealing cover is provided on the tank body. The liquid outlet end of the sealing cover is connected to a sleeve, and the sleeve is connected to a quick connection mechanism. The entire transportation process is in a sealed state to prevent dust from contaminating the refrigerant.

[0009] The object of the present invention can be achieved through the following technical solutions: A filling tank for automobile air-conditioning refrigeration oil, comprising a tank body, a supporting shell, a sealing cover, a buckle ring, an upper protective cover, and a quick connection mechanism, characterized in that the tank body is embedded in the supporting shell, the buckle ring is embedded in the upper port of the tank body, the buckle ring and the supporting shell clamp the tank body and the outer side of the buckle ring is buckled with the upper end of the supporting shell, the inner side of the buckle ring is threadedly connected with the sealing cover, the sealing cover has a liquid outlet end horizontally arranged and connected to the tank body, the liquid outlet port is threadedly connected with a sleeve, and the upper protective cover is clamped on the sealing cover;

[0010] The quick connection mechanism includes a clamping block and a quick-connecting plug. A threaded connection hole is provided at the upper end of the clamping block. One end of the quick-connecting plug is threadedly connected to the threaded connection hole. The other end of the quick-connecting plug has a clamping part for inserting the sleeve. The side of the sealing cover has a limiting square tube. The lower end of the clamping block has a limiting head that is embedded in the limiting square tube. The sealing cover is also provided with a separation component for pushing the quick-connecting plug out of the sleeve.

[0011] Furthermore, an annular groove is formed on the clamping head, and a raised annular retaining edge is formed on the inner wall of the sleeve. When the clamping head is inserted into the sleeve, the annular retaining edge is inserted into the annular groove.

[0012] Furthermore, the separation assembly includes a spring, a translational extrusion sleeve sleeved outside the sleeve and a rotating shell, the rotating shell having a rotating shaft, the rotating shell being rotatably connected between the sealing cover and the upper protective cover through the rotating shaft, the sealing cover having a spring seat, one end of the spring abutting against the rotating shell, and the other end abutting against the spring seat of the sealing cover, elastic rods being provided on both sides of the translational extrusion sleeve, the rotating shell having two and corresponding to the elastic rods one by one, when the rotating shell is subjected to external force to squeeze the spring, the inner side of the rotating shell will abut against the elastic rod to squeeze the elastic rod to deform, and at the same time push the entire translational extrusion sleeve to move along the sleeve, the movement of the translational extrusion sleeve will abut against the clamping head and push the clamping head out of the sleeve.

[0013] Furthermore, the inner wall of the rotating shell has a raised positioning boss, one end of the spring is sleeved on the positioning boss, the inner side of the rotating shell is provided with a hook groove for the outer end of the elastic rod to abut, and both sides of the upper protective cover are provided with windows for exposing the rotating shell.

[0014] Furthermore, the lower end surface of the translational extrusion sleeve is in contact with the upper end surface of the sealing cover.

[0015] Furthermore, a raised retaining ring is provided in the middle of the quick-connect plug, and the front end of the translational extrusion sleeve can abut against the retaining ring.

[0016] Furthermore, the upper protective cover is provided with a plurality of clamping cylinders, and the sealing cover is provided with a plurality of clamping circular holes, into which the clamping cylinders can be inserted and tightly fitted.

[0017] Furthermore, the outer side of the limit head is provided with a square enclosure, the inner side of the enclosure is provided with a guide slide, the limit head is also provided with a positioning column, the outer wall of the limit square tube is provided with a guide slide groove, the guide slide bar and the guide slide groove are slidably matched, and the bottom of the limit square tube is also provided with a positioning hole for inserting the positioning column.

[0018] Furthermore, the tank body is corrugated and made of soft plastic material. The corrugated tank body is a retractable structure, and the air inside the tank body can be squeezed out by compressing the tank body, or the air inside the tank body can be extracted by a car air conditioning maintenance machine. After the tank body shrinks and deforms, only the refrigerant oil remains, so the refrigerant oil can be stored for a long time in a vacuum state.

[0019] Furthermore, a sealing ring is provided between the sealing cover and the buckle ring.

[0020] One end of the threaded connection hole on the clamping block is connected to the input pipe of the automobile air conditioning maintenance machine, the limit head is aligned with the limit square pipe, the clamping head of the quick-connect plug is aligned with the sleeve, and the quick connection mechanism and the sealing cover are connected by external force. The refrigerant oil in the tank body is sucked out from the liquid outlet by the automobile air conditioning maintenance machine, passes through the sleeve and the quick-connect plug in sequence, and finally enters the automobile air conditioning maintenance machine from the input pipe, and is injected into the air conditioning system through the automobile air conditioning maintenance machine. When it is necessary to separate from the automobile air conditioning maintenance machine, it is only necessary to squeeze the rotating shell from both sides to shrink the elastic rod, thereby pushing the entire translational extrusion sleeve to move outward and pushing the quick-connect plug to separate from the sleeve. Loosen the rotating shell, and the rotating shell returns to its original position under the action of the spring. The inner side of the rotating shell is provided with a hook groove for the outer end of the elastic rod to abut. After the elastic rod is expanded outward, the translational extrusion sleeve will also retreat and return to its original position. Rotate the supporting shell to separate the buckle ring from the supporting shell, then you can add refrigerant oil to the tank body, reconnect the supporting shell and the buckle ring, and complete the refrigerant oil replenishment.

[0021] Compared with the prior art, the filling tank of the automobile air-conditioning refrigeration oil has the following advantages:

[0022] 1. Fast connection speed. The quick connection mechanism is connected to the input pipe of the automobile air-conditioning maintenance machine. The quick-connection pipe of the quick connection mechanism is inserted into the sleeve. At the same time, the limit head is plugged into the limit square pipe to realize the connection between the filling tank and the automobile air-conditioning maintenance machine. The refrigerant oil in the filling tank can be added to the automobile air-conditioning maintenance machine, and then pumped from the automobile air-conditioning maintenance machine to the air-conditioning system.

[0023] 2. Good sealing performance. A sealing cover is set on the tank body. The liquid outlet end of the sealing cover is connected to the sleeve, and the sleeve is connected to the quick connection mechanism. The whole transportation process is in a sealed state. The refrigerant oil in the tank body is directly transported to the automobile air-conditioning maintenance machine without contacting the outside air, avoiding dust contamination of the refrigerant.

[0024] 3. The disassembly speed is fast. You only need to squeeze the rotating shell from both sides to shrink the elastic rod, thereby pushing the entire translational extrusion sleeve to move outward and push the quick-connect plug-in tube to separate from the sleeve. The whole process is easy and fast.

[0025] 4. The entire filling tank is reusable. When the refrigerant oil in the tank is used up, it can be disassembled and refilled, which is more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a filling tank for refrigeration oil of an automobile air conditioner.

[0027] Figure 2 It is a cross-sectional view of a filling tank of refrigeration oil of the automobile air conditioner.

[0028] Figure 3 It is a schematic diagram of the structure of the filling tank with the quick connection mechanism removed.

[0029] Figure 4 It is a structural schematic diagram of a quick connection mechanism.

[0030] Figure 5 It is a structural schematic diagram of the sealing cover.

[0031] Figure 6 It is a schematic diagram of the structure of the separation component.

[0032] Figure 7 It is a schematic diagram of the structure of the rotating shell.

[0033] Figure 8 It is a structural schematic diagram of the translation extrusion sleeve.

[0034] In the figure, 1, tank body; 2, supporting shell; 3, sealing cover; 31, liquid outlet; 32, limiting square tube; 33, spring seat; 34, clamping round hole; 35, guide groove; 36, positioning hole; 4, buckle; 5, upper protective cover; 51, clamping cylinder; 6, sleeve; 61, annular retaining edge; 7, clamping block; 71, threaded connection hole; 72, limiting head; 73, enclosure; 74, guide slide; 75, positioning column; 8, quick-connect plug; 81, clamping head; 82, annular clamping groove; 83, retaining ring; 9, spring; 10, translation extrusion sleeve; 101, elastic rod; 11, rotating shell; 111, rotating shaft; 112, positioning boss; 12, sealing ring. DETAILED DESCRIPTION

[0035] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0036] like Figure 1-3 As shown, the filling tank of the automobile air-conditioning refrigeration oil comprises a tank body 1, a supporting shell 2, a sealing cover 3, a buckle 4, an upper protective cover 5, and a quick connection mechanism. The tank body 1 is embedded in the supporting shell 2, and the buckle 4 is embedded in the upper end of the tank body 1. The buckle 4 and the supporting shell 2 clamp the tank body 1 and the outer side of the buckle 4 is buckled with the upper end of the supporting shell 2. The inner side of the buckle 4 is threadedly connected to the sealing cover 3. The sealing cover 3 has a liquid outlet 31 horizontally arranged and connected to the tank body 1. The port of the liquid outlet 31 is threadedly connected with a sleeve 6, and the upper protective cover 5 is clamped on the sealing cover 3.

[0037] The upper protective cover 5 is provided with a plurality of clamping cylinders 51 , and the sealing cover 3 is provided with a plurality of clamping holes 34 , into which the clamping cylinders 51 can be inserted and tightly fitted.

[0038] like Figure 4-5 As shown, the quick connection mechanism includes a clamping block 7 and a quick-connecting plug 8. A threaded connection hole 71 is formed at the upper end of the clamping block 7. One end of the quick-connecting plug 8 is threadedly connected to the threaded connection hole 71. The other end of the quick-connecting plug 8 has a clamping portion 81 for inserting the sleeve 6. The side of the sealing cover 3 has a limiting square tube 32. The lower end of the clamping block 7 has a limiting head 72 that is embedded in the limiting square tube 32. The sealing cover 3 is also provided with a separation component for pushing the quick-connecting plug 8 out of the sleeve 6.

[0039] The clamping head 81 is provided with an annular groove 82, and the inner wall of the sleeve 6 is provided with a raised annular retaining edge 61. When the clamping head 81 is inserted into the sleeve 6, the annular retaining edge 61 is inserted into the annular groove 82. The outer side of the limit head 72 is provided with a square enclosure 73, and the inner side of the enclosure 73 is provided with a guide slide 74. The limit head 72 is also provided with a positioning column 75. The outer wall of the limit square tube 32 is provided with a guide slide groove 35, and the guide slide bar 74 is slidably matched with the guide slide groove 35. The bottom of the limit square tube 32 is also provided with a positioning hole 36 for inserting the positioning column 75.

[0040] like Figure 6-8As shown, the separation assembly includes a spring 9, a translational extrusion sleeve 10 sleeved outside the sleeve 6, and a rotating shell 11, the rotating shell 11 has a rotating shaft 111, and the rotating shell 11 is rotatably connected between the sealing cover 3 and the upper protective cover 5 through the rotating shaft 111, the sealing cover 3 has a spring seat 33, one end of the spring 9 abuts on the rotating shell 11, and the other end abuts on the spring seat 33 of the sealing cover 3, and the translational extrusion sleeve 10 has elastic rods 101 on both sides, and the rotating shell 11 has two and one-to-one correspondence with the elastic rods 101. When the rotating shell 11 is squeezed by external force, the inner side of the rotating shell 11 will abut against the elastic rod 101 and squeeze the elastic rod 101 to deform, and at the same time push the entire translational extrusion sleeve 10 to move along the sleeve 6, and the movement of the translational extrusion sleeve 10 will abut against the clamping head 81 and push the clamping head 81 out of the sleeve 6.

[0041] The inner wall of the rotating shell 11 has a raised positioning boss 112, one end of the spring 9 is sleeved on the positioning boss 112, the inner side of the rotating shell 11 is provided with a hook groove for the outer end of the elastic rod 101 to abut against, and windows for exposing the rotating shell 11 are provided on both sides of the upper protective cover 5, and the lower end surface of the translation extrusion sleeve 10 is in contact with the upper end surface of the sealing cover 3.

[0042] A raised stop ring 83 is provided in the middle of the quick-connect plug tube 8 , and the front end of the translation extrusion sleeve 10 can abut against the stop ring 83 .

[0043] The tank body 1 is corrugated and made of soft plastic material, and a sealing ring 12 is provided between the sealing cover 3 and the buckle 4. The corrugated tank body 1 is a retractable structure, and the air inside the tank body 1 can be squeezed out by compressing the tank body 1, or the air inside the tank body 1 can be extracted by a car air conditioner maintenance machine. After the tank body 1 shrinks and deforms, only the refrigerant oil remains, so the refrigerant oil can be stored for a long time in a vacuum state.

[0044] Principle of quick connection: one end of the threaded connection hole 71 on the clamping block 7 is connected to the input pipe of the automobile air conditioner maintenance machine, the limit head 72 is aligned with the limit square pipe 32, the clamping head 81 of the quick-connect plug 8 is aligned with the sleeve 6, and the quick connection mechanism and the sealing cover 3 are connected by external force. The refrigerant oil in the tank body 1 is sucked out from the liquid outlet 31 by the automobile air conditioner maintenance machine, passes through the sleeve 6 and the quick-connect plug 8 in sequence, and finally enters the automobile air conditioner maintenance machine from the input pipe, and is injected into the air conditioning system through the automobile air conditioner maintenance machine.

[0045] Principle of quick separation: When it is necessary to separate from the automobile air conditioning maintenance machine, just squeeze the rotating shell 11 from both sides to shrink the elastic rod 101, thereby pushing the entire translational extrusion sleeve 10 outward and pushing the quick-connect plug 8 to separate from the sleeve 6. Loosen the rotating shell 11, and the rotating shell 11 returns to its original position under the action of the spring 9. The inner side of the rotating shell 11 is provided with a hook groove for the outer end of the elastic rod 101 to abut against. After the elastic rod 101 is expanded outward, the translational extrusion sleeve 10 will also retreat and return to its original position. Rotate the supporting shell 2 to separate the buckle 4 from the supporting shell 2, then add refrigeration oil to the tank body 1, reconnect the supporting shell 2 and the buckle 4, and complete the refrigerant oil replenishment.

[0046] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A filling tank for automobile air-conditioning refrigeration oil, comprising a tank body, a supporting shell, a sealing cover, a buckle, an upper protective cover, and a quick connection mechanism, characterized in that: The tank body is embedded in the supporting shell, the buckle ring is embedded in the upper port of the tank body, the buckle ring and the supporting shell clamp the tank body, and the outer side of the buckle ring is buckled with the upper end of the supporting shell, the inner side of the buckle ring is threadedly connected with the sealing cover, the sealing cover has a liquid outlet end horizontally arranged and connected to the tank body, the liquid outlet port is threadedly connected with a sleeve, and the upper protective cover is clamped on the sealing cover; The quick connection mechanism includes a clamping block and a quick-connecting plug. A threaded connection hole is provided at the upper end of the clamping block. One end of the quick-connecting plug is threadedly connected to the threaded connection hole. The other end of the quick-connecting plug has a clamping part for inserting the sleeve. The side of the sealing cover has a limiting square tube. The lower end of the clamping block has a limiting head that is embedded in the limiting square tube. The sealing cover is also provided with a separation component for pushing the quick-connecting plug out of the sleeve.

2. The filling tank for automobile air-conditioning refrigeration oil according to claim 1, characterized in that: An annular groove is formed on the clamping head, and a raised annular retaining edge is formed on the inner wall of the sleeve. When the clamping head is inserted into the sleeve, the annular retaining edge is inserted into the annular groove.

3. A filling tank for automobile air-conditioning refrigeration oil according to claim 1 or 2, characterized in that: The separation assembly includes a spring, a translational extrusion sleeve sleeved outside the sleeve and a rotating shell, the rotating shell is provided with a rotating shaft, the rotating shell is rotatably connected between the sealing cover and the upper protective cover through the rotating shaft, the sealing cover is provided with a spring seat, one end of the spring abuts against the rotating shell, and the other end abuts against the spring seat of the sealing cover, elastic rods are provided on both sides of the translational extrusion sleeve, the rotating shell has two and one-to-one correspondence with the elastic rods, when the rotating shell is subjected to external force to squeeze the spring, the inner side of the rotating shell will abut against the elastic rod to squeeze the elastic rod to deform, and at the same time push the entire translational extrusion sleeve to move along the sleeve, the movement of the translational extrusion sleeve will abut against the clamping head and push the clamping head out of the sleeve.

4. A filling tank for automobile air-conditioning refrigeration oil according to claim 3, characterized in that: The inner wall of the rotating shell has a raised positioning convex head, one end of the spring is sleeved on the positioning convex head, the inner side of the rotating shell is provided with a hook groove for the outer end of the elastic rod to abut, and both sides of the upper protective cover are provided with windows for exposing the rotating shell.

5. The filling tank for automobile air-conditioning refrigeration oil according to claim 4, characterized in that: The lower end surface of the translation extrusion sleeve is in contact with the upper end surface of the sealing cover.

6. The filling tank for automobile air-conditioning refrigeration oil according to claim 5, characterized in that: A raised retaining ring is provided in the middle of the quick-connect plug tube, and the front end of the translation extrusion sleeve can abut against the retaining ring.

7. The filling tank for automobile air-conditioning refrigeration oil according to claim 1, characterized in that: The upper protective cover is provided with a plurality of clamping cylinders, and the sealing cover is provided with a plurality of clamping circular holes, into which the clamping cylinders can be inserted and tightly fitted.

8. The filling tank for automobile air-conditioning refrigeration oil according to claim 1, characterized in that: The outer side of the limit head is provided with a square enclosure, the inner side of the enclosure is provided with a guide slide, the limit head is also provided with a positioning column, the outer wall of the limit square tube is provided with a guide slide groove, the guide slide bar and the guide slide groove are slidably matched, and the bottom of the limit square tube is also provided with a positioning hole for inserting the positioning column.

9. The filling tank for automobile air-conditioning refrigeration oil according to claim 1, characterized in that: The tank body is corrugated and made of soft plastic material.

10. The filling tank for automobile air-conditioning refrigeration oil according to claim 1, characterized in that: A sealing ring is arranged between the sealing cover and the buckle ring.

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