Refrigerant filling machine based on refrigerating machine and filling method

Abstract

The invention relates to the technical field of refrigerator manufacturing, and particularly discloses a refrigerator-based refrigerant filling machine and a filling method.The refrigerator-based refrigerant filling machine comprises a column body fixedly arranged at the top of a machine table and a disc body fixedly arranged at the top of the column body, and the top of the disc body is provided with filling mechanisms arranged in an annular array with the center point of the disc body as the center; the filling mechanism comprises a discharging pipe, the inner wall of the discharging pipe is sleeved with a pushing column, the top of the discharging pipe is provided with a pushing mechanism used for driving the pushing column to ascend and descend, and the outer wall of the discharging pipe is provided with a limiting mechanism used for limiting the ascending position of the pushing column. The space with the specified size is set through the limiting mechanism to be used for being filled with refrigerants, all the filled refrigerants are pushed out at a time through the material pushing mechanism, and therefore the filling amount of the refrigerants can be conveniently controlled, and compared with traditional filling through weighing, the filling efficiency is improved, the residual amount of the refrigerants in the discharging pipe is reduced, and the filling precision is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refrigerator manufacturing, in particular to a refrigerant filling machine based on a refrigerator and a filling method. BACKGROUND

[0002] The refrigerant circulation flow constitutes the core of the refrigeration cycle, and the compressor realizes the system pressure balance to maintain the continuous refrigeration of the refrigerator. During the manufacturing process of the refrigerator, the refrigerant needs to be filled into the refrigerator to meet the subsequent use of the refrigerator.

[0003] The background technology of the disclosure No. CN208365885U discloses a refrigerant filling machine. The problem proposed in the background technology is that the existing refrigerant filling machine will cause refrigerant leakage due to improper operation during the filling process, and the filling gun is not completely matched with the refrigeration equipment. In severe cases, it may even threaten the life safety of the operator.

[0004] In summary, the existing technology has the following problems:

[0005] The existing refrigerant filling machine usually uses weighing method to quantitatively fill liquid refrigerant during work, so that the filling amount is within the allowable error. The weighing method needs to stop the refrigerant on the weighing device for weighing, and then filling. This reduces the filling efficiency, and the pipeline connected with the refrigerator in the existing refrigerant filling machine will have residual refrigerant after filling is completed, which reduces the filling accuracy and has certain disadvantages. In order to solve the above problems, a refrigerant filling machine based on a refrigerator and a filling method are proposed. SUMMARY

[0006] To achieve the above purpose, the present application is realized by the following technical scheme: a refrigerant filling machine based on a refrigerator, comprising a machine table, further comprising a column fixedly arranged on the top of the machine table and a disc body fixedly arranged on the top of the column, the top of the disc body is provided with a filling mechanism arranged in a ring array around the center point of the disc body, for filling refrigerant into the refrigerant, the filling mechanism comprises:

[0007] The blanking pipe is fixedly sleeved on the top of the disc body and extends to the bottom of the disc body. The inner wall of the blanking pipe is sleeved with a pushing column, and the side wall of the pushing column is in dynamic sealing design with the inner side wall of the blanking pipe. The top of the blanking pipe is provided with a pushing mechanism for driving the pushing column to ascend and descend, and the outer wall of the blanking pipe is provided with a limiting mechanism for limiting the ascending position of the pushing column, so as to adjust the filling amount of the refrigerant in the blanking pipe. The pushing mechanism comprises:

[0008] The cylinder is arranged on the top of the blanking pipe, and the inner wall of the cylinder is sleeved with a piston block, and the side wall of the piston block is in dynamic sealing design with the inner side wall of the cylinder.

[0009] The piston rod is fixedly arranged at the bottom of the piston block and extends to the bottom of the cylinder body, the bottom of the piston rod is fixedly connected with the top of the pushing column, and the outer wall upper end and the outer wall lower end of the cylinder body are respectively provided with a first air guide assembly and a second air guide assembly to drive the piston block and the pushing column to ascend and descend.

[0010] Further, the pushing mechanism further comprises;

[0011] The first groove is arranged at the bottom of the pushing column and extends into the piston rod, the inner wall of the top of the first groove is provided with a second groove, the inner wall diameter of the second groove is greater than that of the first groove, the second groove and the inner wall of the first groove are respectively provided with an insertion block and an insertion rod, and the insertion block and the insertion rod are fixedly connected on the side close to each other.

[0012] The connecting pipe is fixedly arranged on the outer wall of the cylinder body, and the two ends of the connecting pipe are respectively communicated with the inside of the cylinder body and the inside of the second groove.

[0013] Further, the outer wall of the connecting pipe is provided with a first valve body and a pressure relief valve, and the first valve body is located at the end of the connecting pipe close to the cylinder body, and the inner side wall of the second groove is provided with a gas discharge hole.

[0014] The side walls of the insertion block and the insertion rod are respectively in dynamic sealing design with the inner side walls of the second groove and the first groove, the side wall of one end of the insertion rod located in the second groove and the bottom of the insertion block is provided with a spring to make the insertion block have a tendency to move upward, and the bottom of the insertion rod is in arc design.

[0015] The lower end of the discharging pipe is in arc design, and the bottom of the discharging pipe is provided with an insertion hole matched with the insertion rod.

[0016] Further, the first air guide assembly and the second air guide assembly are the same structure, and the first air guide assembly and the second air guide assembly are respectively located at the top of the piston block to drive the piston block to descend or ascend, and the first air guide assembly comprises:

[0017] The first conduit is fixedly arranged on the outer wall of the cylinder body and located at the top of the piston block, one end of the first conduit away from the cylinder body is connected with a retention box, one end of the retention box away from the first conduit is connected with a second conduit, one end of the second conduit away from the retention box is connected with a pump body, and the outer wall of the second conduit is provided with a second valve body.

[0018] Further, the limiting mechanism comprises:

[0019] The mounting sleeve is fixedly sleeved on the outer wall of the blanking pipe, the outer wall of the mounting sleeve is rotationally provided with an outer threaded pipe, the outer wall of the outer threaded pipe is threadedly connected with an inner threaded pipe, the outer wall of the inner threaded pipe is fixedly provided with an annular array of connecting pieces at the upper end, the connecting pieces are designed in a bent shape so that the ends of the connecting pieces away from the inner threaded pipe extend into the blanking pipe, and the top of the disc body is provided with a driving mechanism for synchronously driving the rotation of the annular array of outer threaded pipes.

[0020] The limiting ring is sleeved on the inner wall of the blanking pipe, and the top of the limiting ring is fixedly connected with the ends of the connecting pieces located in the blanking pipe.

[0021] Further, the limiting mechanism further comprises:

[0022] The pressure sensor is embedded in the bottom of the limiting ring and symmetrically arranged with the center point of the limiting ring;

[0023] The first inductor is embedded in the bottom of the limiting ring and symmetrically arranged with the center point of the limiting ring, and the first inductor is vertically arranged with the pressure sensor;

[0024] The second inductor is embedded in the top of the pushing column and is arranged corresponding to the position of the first inductor.

[0025] Further, the driving mechanism comprises:

[0026] The gear is rotationally provided on the top of the disc body, the inside of the column body is fixedly provided with a servo motor, the output shaft of the servo motor is fixedly provided with a rotating shaft extending to the top of the disc body through a shaft coupling, and the rotating shaft is fixedly connected with the disc body;

[0027] The gear ring is fixedly sleeved on the lower end of the outer wall of the outer threaded pipe and is engaged with the gear.

[0028] Further, the top of the disc body is fixedly provided with a mounting column, the side wall of the mounting column is fixedly provided with a mounting plate for mounting the pump body and the retention tank at the upper end, and the side wall of the mounting column is fixedly connected with the outer wall of the cylinder body;

[0029] The outer wall of the inner threaded pipe is slidingly connected with the lower end of the side wall of the mounting column to limit the inner threaded pipe.

[0030] The application also provides a filling method of a refrigerant filling machine based on a refrigeration machine, which adopts the refrigerant filling machine based on the refrigeration machine, and the method comprises the following steps:

[0031] S1: adjusting the amount of refrigerant stored in the blanking pipe according to the filling amount of the refrigeration machine to fill the specified amount of refrigerant in the blanking pipe;

[0032] S2: conveying the refrigerant in the blanking pipe to push all the refrigerant in the blanking pipe into the cooling machine through the pushing mechanism to complete the filling of the refrigerant.

[0033] Further, the step S1 adjusts the amount of refrigerant stored in the blanking pipe by limiting the position of the pushing column rising controlled by the limiting mechanism.

[0034] The application provides a refrigerant filling machine and filling method based on a refrigeration machine.

[0035] 1. The application sets a space of a specified size for filling refrigerant through the limiting mechanism, and pushes out all the filled refrigerant at one time through the pushing mechanism, so as to facilitate the control of the filling amount of refrigerant, improve the filling efficiency compared with the traditional filling by weighing, and reduce the residual amount of refrigerant in the blanking pipe, thereby improving the filling accuracy.

[0036] 2. The application drives the pushing column to rise and fall by adopting the driving mode of gas, so as to facilitate the limiting of the pushing column by the limiting mechanism, and enable the pushing column to be limited in a purely mechanical manner, thereby improving the accuracy of controlling the filling amount, and enabling the insertion rod and the insertion block to move, so as to facilitate the pushing out of the residual refrigerant in the insertion hole in the blanking pipe, compared with the traditional filling mechanism, the residual amount of refrigerant in the pipe body is reduced after each filling, the filling accuracy is improved, and long-term use is facilitated.

[0037] 3. The application facilitates the limiting of the lifting position of the pushing column through the limiting mechanism, thereby facilitating the adjustment of the filling space of refrigerant in the blanking pipe, facilitating the adjustment of the filling amount of refrigerant according to the actual situation, cooperating with the pushing mechanism to facilitate the adjustment without affecting the movement of the pushing column, and cooperating with the driving mechanism to facilitate the synchronous adjustment of the filling amount of the plurality of filling mechanisms arranged in an annular array.

[0038] 4. The application facilitates the monitoring of the abutting force between the pushing column and the limiting ring through the pressure sensor, and cooperates with the first and second sensors to determine the position of the pushing column, thereby facilitating the grasping of the position of the pushing column, the filling amount of refrigerant, and the setting of the pressure sensor and the like at the top of the pushing column without contacting the refrigerant, thereby facilitating long-term use. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 It is a schematic diagram of the overall structure of the application;

[0040] Figure 2 It is a schematic diagram of the structure of the disc, the pushing mechanism and the driving mechanism of the application;

[0041] Figure 3 It is a schematic diagram of the cross-sectional structure of the disc of the application;

[0042] Figure 4 It is a schematic diagram of the structure of the filling mechanism of the application;

[0043] Figure 5 Figure 1 is a schematic diagram of the rear side structure of the installation column, pushing mechanism and blanking tube of the present application;

[0044] Figure 6 Figure 2 is a schematic diagram of the right side structure of the blanking tube of the present application;

[0045] Figure 7 Figure 3 is a schematic diagram of the left side structure of the blanking tube of the present application;

[0046] Figure 8 Figure 4 is a schematic diagram of the pushing column, limiting ring, first sensor, second sensor and pressure sensor structure of the present application;

[0047] Figure 9 Figure 5 is a schematic diagram of the first sensor, second sensor and pressure sensor structure of the present application;

[0048] Figure 10 Figure 6 is a schematic diagram of the cylinder body of the present application;

[0049] Figure 11 Figure 7 is a schematic diagram of the piston rod of the present application;

[0050] Figure 12 Figure 8 is a schematic diagram of the installation column, first air guide assembly and second air guide assembly of the present application.

[0051] The reference signs involved in the above-mentioned figures: 1, machine table; 2, column body; 3, disc body; 4, driving mechanism; 5, filling mechanism;

[0052] 41, servo motor; 42, gear; 43, gear ring;

[0053] 51, pushing mechanism; 52, limiting mechanism; 53, blanking tube; 54, installation column; 55, pushing column;

[0054] 511, piston rod; 512, pressure relief valve; 513, connecting pipe; 514, first valve body; 515, piston block; 516, cylinder body; 517, first air guide assembly; 518, second air guide assembly; 519, insertion block; 5191, second groove; 5192, insertion rod; 5193, first groove; 5194, air release hole;

[0055] 5171, first conduit; 5172, second valve body; 5173, second conduit; 5174, pump body; 5175, retention tank;

[0056] 521, insertion hole; 522, installation sleeve; 523, externally threaded pipe; 524, internally threaded pipe; 525, connecting piece; 526, limiting ring; 527, first sensor; 528, second sensor; 529, pressure sensor. DETAILED DESCRIPTION

[0057] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0058] Embodiment one: please refer to Figure 1 and Figure 2 A refrigerant filling machine based on a refrigeration machine, comprising a machine table 1, further comprising a column 2 fixedly arranged on the top of the machine table 1 and a disc body 3 fixedly arranged on the top of the column 2, wherein the top of the disc body 3 is provided with a filling mechanism 5 arranged in a ring array with the center point of the disc body 3, for filling refrigerant into the refrigerant.

[0059] Please refer to Figure 4 , Figure 5 and Figure 6 The filling mechanism 5 comprises:

[0060] A blanking pipe 53 is fixedly sleeved on the top of the disc body 3 and extends to the bottom of the disc body 3, the inner wall of the blanking pipe 53 is sleeved with a pushing column 55, the side wall of the pushing column 55 is in dynamic sealing design with the inner side wall of the blanking pipe 53, the top of the blanking pipe 53 is provided with a pushing mechanism 51 for driving the pushing column 55 to ascend and descend, and the outer wall of the blanking pipe 53 is provided with a limiting mechanism 52 for limiting the ascending position of the pushing column 55, so as to adjust the filling amount of the refrigerant in the blanking pipe 53.

[0061] Please refer to Figure 10 , Figure 11 and Figure 12 The pushing mechanism 51 comprises:

[0062] A cylinder body 516 is arranged on the top of the blanking pipe 53, the inner wall of the cylinder body 516 is sleeved with a piston block 515, and the side wall of the piston block 515 is in dynamic sealing design with the inner side wall of the cylinder body 516;

[0063] A piston rod 511 is fixedly arranged on the bottom of the piston block 515 and extends to the bottom of the cylinder body 516, the bottom of the piston rod 511 is fixedly connected with the top of the pushing column 55, and the outer wall upper end and the outer wall lower end of the cylinder body 516 are respectively provided with a first air guide assembly 517 and a second air guide assembly 518, so as to drive the piston block 515 and the pushing column 55 to ascend and descend.

[0064] The pushing mechanism 51 further comprises:

[0065] The first groove 5193 is arranged at the bottom of the pushing column 55 and extends into the piston rod 511. The inner wall of the top of the first groove 5193 is provided with a second groove 5191. The inner wall diameter of the second groove 5191 is larger than that of the first groove 5193. The second groove 5191 and the first groove 5193 are respectively sleeved with an insertion block 519 and an insertion rod 5192. The insertion block 519 is fixedly connected to the side of the insertion rod 5192 that is close to each other.

[0066] The connecting pipe 513 is fixedly arranged on the outer wall of the cylinder body 516. The two ends of the connecting pipe 513 are respectively communicated with the inside of the cylinder body 516 and the inside of the second groove 5191.

[0067] The outer wall of the connecting pipe 513 is provided with a first valve body 514 and a pressure relief valve 512. The first valve body 514 is located at the end of the connecting pipe 513 close to the cylinder body 516. The inner side wall of the second groove 5191 is provided with a gas discharge hole 5194.

[0068] The side walls of the insertion block 519 and the insertion rod 5192 are respectively in dynamic sealing design with the inner side walls of the second groove 5191 and the first groove 5193. The side wall of the end of the insertion rod 5192 located in the second groove 5191 and the bottom of the insertion block 519 are sleeved with a spring, so that the insertion block 519 has a tendency to move upward. The bottom of the insertion rod 5192 is arc-shaped.

[0069] The lower end of the discharging pipe 53 is arc-shaped. The bottom of the discharging pipe 53 is provided with an insertion hole 521 matched with the insertion rod 5192.

[0070] In specific implementation, when the limiting ring 526 is adjusted to a specified height by the driving mechanism 4, the limiting ring 526 limits the height of the upward movement of the pushing column 55, thereby limiting the space inside the discharging pipe 53. When the refrigerant is conveyed into the discharging pipe 53 through the external conveying pipeline, only a specified amount of refrigerant can be filled in the space inside the discharging pipe 53, thereby determining the filling amount of the coolant.

[0071] When the perfusion is carried out, the pump body 5174 of the first air guide assembly 517 is started to drive the gas in and outside the retention box 5175 to the cylinder body 516 along the first conduit 5171, and to extrude the piston block 515, so that the piston block 515 moves downward, and the piston rod 511 and the pushing column 55 are driven to move downward, so that the refrigerant in the lower feeding pipe 53 is perfused into the refrigeration machine, and the perfusion of the refrigerant is completed. When the piston block 515 moves downward, part of the gas at the bottom of the piston block 515 enters the retention box 5175 of the second air guide assembly 518, and part of the gas enters the connecting pipe 513 and then enters the second groove 5191. In this process, the first valve body 514 is in the open state, so that the plug 519 and the plug rod 5192 move downward against the elastic force of the spring, so that the plug rod 5192 moves downward and is inserted into the insertion hole 521, so as to reduce the residual refrigerant in the lower feeding pipe 53, thereby improving the accuracy of the refrigerant perfusion.

[0072] When the perfusion is carried out, the pump body 5174 of the first air guide assembly 517 is started to drive the gas in and outside the retention box 5175 to the cylinder body 516 along the first conduit 5171, and to extrude the piston block 515, so that the piston block 515 moves downward, and the piston rod 511 and the pushing column 55 are driven to move downward, so that the refrigerant in the lower feeding pipe 53 is perfused into the refrigeration machine, and the perfusion of the refrigerant is completed. When the piston block 515 moves downward, part of the gas at the bottom of the piston block 515 enters the retention box 5175 of the second air guide assembly 518, and part of the gas enters the connecting pipe 513 and then enters the second groove 5191. In this process, the first valve body 514 is in the open state, so that the plug 519 and the plug rod 5192 move downward against the elastic force of the spring, so that the plug rod 5192 moves downward and is inserted into the insertion hole 521, so as to reduce the residual refrigerant in the lower feeding pipe 53, thereby improving the accuracy of the refrigerant perfusion.

[0073] The first air guide assembly 517 and the second air guide assembly 518 are the same structure, and the first air guide assembly 517 and the second air guide assembly 518 are respectively located at the top of the piston block 515, so as to drive the piston block 515 to move downward or upward. The first air guide assembly 517 comprises:

[0074] The first conduit 5171 is fixedly arranged on the outer wall of the cylinder body 516 and located at the top of the piston block 515. The first conduit 5171 is connected with the retention box 5175 at the end away from the cylinder body 516. The end of the retention box 5175 away from the first conduit 5171 is connected with the second conduit 5173. The end of the second conduit 5173 away from the retention box 5175 is connected with the pump body 5174. The outer wall of the second conduit 5173 is provided with the second valve body 5172.

[0075] In the specific implementation, the first air guide assembly 517 and the second air guide assembly 518 are cooperated to facilitate the control of the piston block 515 to move downward or upward, so as to facilitate the driving of the pushing column 55 to move upward or downward.

[0076] The retention box 5175 is arranged to facilitate the gas extruded when the piston block 515 moves to enter the corresponding retention box 5175, thereby facilitating long-term use.

[0077] Embodiment two: please refer to Figure 6 、 Figure 7 、 Figure 8 and Figure 9 The difference between the technical solutions of this embodiment and embodiment one is that the limiting mechanism 52 comprises:

[0078] The mounting sleeve 522 is fixedly sleeved on the outer wall of the discharging pipe 53. The outer wall of the mounting sleeve 522 is rotationally provided with an externally threaded pipe 523. The externally threaded pipe 523 is threadedly connected with an internally threaded pipe 524. The outer wall of the internally threaded pipe 524 is fixedly provided with an annular array of connecting pieces 525 at the upper end. The connecting pieces 525 are designed in a bent shape so that the ends of the connecting pieces 525 away from the internally threaded pipe 524 extend into the discharging pipe 53. The top of the disc body 3 is provided with a driving mechanism 4 for synchronously driving the rotation of the annular array of externally threaded pipes 523.

[0079] The limiting ring 526 is sleeved on the inner wall of the discharging pipe 53, and the top of the limiting ring 526 is fixedly connected with the ends of the connecting pieces 525 located in the discharging pipe 53.

[0080] The limiting mechanism 52 further comprises:

[0081] The pressure sensor 529 is inlaid at the bottom of the limiting ring 526 and symmetrically arranged with the center point of the limiting ring 526.

[0082] The first inductor 527 is inlaid at the bottom of the limiting ring 526 and symmetrically arranged with the center point of the limiting ring 526. The first inductor 527 is vertically arranged with the pressure sensor 529.

[0083] The second inductor 528 is inlaid at the top of the pushing column 55 and arranged in correspondence with the position of the first inductor 527.

[0084] In specific implementation, the driving mechanism 4 drives the rotation of the externally threaded pipe 523, thereby driving the internally threaded pipe 524 to move under the limitation of the mounting rod, so as to drive the connecting pieces 525 and the limiting ring 526 to move, thereby adjusting the height of the limiting ring 526, adjusting the height of the limiting of the pushing column 55, adjusting the space for storing the refrigerant in the discharging pipe 53, and thereby facilitating the adjustment of the filling amount of the refrigerant according to the actual use condition.

[0085] The pushing column 55 is limited by the limiting ring 526, and the piston block 515, the piston rod 511 and the pushing column 55 are driven to move by the gas extrusion, thereby facilitating the pushing column 55 to move by a specified amount according to the limitation of the limiting ring 526.

[0086] The abutment force of the upward movement of the pushing column 55 and the limiting ring 526 is monitored by the pressure sensor 529, and cooperates with the first sensor 527 and the second sensor 528, so that the position of the pushing column 55 is judged, the position of the pushing column 55 is grasped, and the filling amount of the refrigerant is grasped.

[0087] Please refer to Figure 3 , the driving mechanism 4 comprises:

[0088] The gear 42 is arranged on the top of the disc body 3, the inside of the column 2 is fixedly provided with a servo motor 41, the output shaft of the servo motor 41 is fixedly provided with a rotating shaft extending to the top of the disc body 3 through a shaft coupling, and the rotating shaft is fixedly connected with the disc body 3.

[0089] The gear ring 43 is fixedly sleeved on the lower end of the outer wall of the outer threaded pipe 523 and is engaged with the gear 42.

[0090] In specific implementation, the servo motor 41 drives the gear 42 to rotate, thereby driving the gear ring 43 and the outer threaded pipe 523 to rotate, so that the positions of the plurality of limiting rings 526 are synchronously adjusted, and the filling amounts of the plurality of filling mechanisms 5 arranged in an annular array are synchronously adjusted.

[0091] The top of the disc body 3 is fixedly provided with a mounting column 54, the side wall upper end of the mounting column 54 is fixedly provided with a mounting plate for mounting the pump body 5174 and the retention tank 5175, and the side wall of the mounting column 54 is fixedly connected with the outer wall of the cylinder body 516.

[0092] The outer wall of the inner threaded pipe 524 is slidably connected with the lower end of the side wall of the mounting column 54, so as to limit the inner threaded pipe 524.

[0093] The servo motor 41 and the electronic devices such as the pressure sensor 529 are connected with the controller and the power supply through wires, so as to be actually controlled and used, which is prior art and will not be described herein.

[0094] The embodiment of the application further provides a filling method of the refrigerant filling machine based on the refrigeration machine, and the method comprises the following steps:

[0095] S1: adjusting the amount of the refrigerant stored in the downcomer 53 according to the filling amount of the refrigerant filled in the refrigeration machine, so as to fill the downcomer 53 with a specified amount of the refrigerant;

[0096] S2: after determining that the filling amount of the refrigerant in the downcomer 53 is completed, conveying the refrigerant in the downcomer 53, so as to push all the refrigerant in the downcomer 53 into the refrigeration machine through the pushing mechanism 51, and completing the filling of the refrigerant.

[0097] The adjustment of the amount of refrigerant stored in the feeding pipe 53 in step S1 is controlled by the limiting mechanism 52 limiting the position of the upward movement of the pushing column 55.

[0098] The present application specifically implements the feeding of refrigerant into the feeding pipe 53 through an external feeding pipeline, and closes the valve at the lower end of the feeding pipe 53 when feeding refrigerant into the feeding pipe 53 to avoid leakage of refrigerant. The valve and the external feeding pipeline are both prior art and will not be described here. After the feeding of refrigerant into the feeding pipe 53 is completed, and when it is necessary to fill refrigerant into the cooling machine, the cooling machine is moved to the bottom of the feeding pipe 53 by a worker or a mechanical arm. Then, the valve on the outer wall of the feeding pipe 53 is opened, and high-pressure gas is fed into the interior of the cylinder body 516 through the first gas guiding assembly 517 to drive the piston block 515, the piston rod 511 and the pushing column 55 to move downward, thereby discharging the refrigerant in the feeding pipe 53 into the cooling machine. When the piston block 515 moves downward, the gas at the bottom of the piston block 515 is squeezed. At this time, the first valve body 514 is in an open state, so that the gas at the bottom of the piston block 515 after being squeezed enters the connecting pipe 513 and is discharged into the second recess 5191 through the connecting pipe 513, thereby causing the plug 519 and the plug rod 5192 to move downward against the elastic force of the spring to discharge the refrigerant in the insertion hole 521 at the bottom of the feeding pipe 53, thereby reducing the residual refrigerant in the feeding pipe 53 and improving the precision of the quantitative filling of refrigerant.

[0099] When adjusting the filling amount of refrigerant, the height of the limiting ring 526 is adjusted by the driving mechanism 4, thereby adjusting the height of the limiting of the pushing column 55, so that only a specified amount of refrigerant can be filled in the feeding pipe 53, and cooperating with the pushing mechanism 51, the residual refrigerant in the feeding pipe 53 during filling is reduced, thereby improving the precision of the filling of refrigerant.

[0100] Meanwhile, the contents not described in detail in the present specification all belong to the prior art known to those skilled in the art.

[0101] It should be noted that, in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0102] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A refrigerant filling machine based on a refrigerator, comprising a machine platform, characterized in that: The machine also includes a column fixed on the top of the machine and a disk fixed on the top of the column. The top of the disk is provided with a filling mechanism arranged in a circular array with the center point of the disk, for filling the refrigerant into the refrigerant. The filling mechanism includes: The discharge pipe is fixedly sleeved on the top of the disk body and extends to the bottom of the disk body. The inner wall of the discharge pipe is sleeved with a push pin. The side wall of the push pin and the inner wall of the discharge pipe are designed to be dynamically sealed. The top of the discharge pipe is provided with a pushing mechanism for driving the pushing pin to rise and fall. The outer wall of the discharge pipe is provided with a limit mechanism for limiting the rising position of the pushing pin to adjust the amount of refrigerant filled in the discharge pipe. The pushing mechanism includes: The cylinder body is arranged on the top of the feeding pipe, and the inner wall of the cylinder body is sleeved with a piston block, and the side wall of the piston block and the inner wall of the cylinder body are designed to be dynamically sealed; The piston rod is fixed at the bottom of the piston block and extends to the bottom of the cylinder body. The bottom of the piston rod is fixedly connected to the top of the pushing column. The upper end and the lower end of the outer wall of the cylinder body are respectively provided with a first air guide component and a second air guide component to drive the piston block and the pushing column to rise and fall.

2. A refrigerant filling machine based on a refrigerator according to claim 1, characterized in that: The pushing mechanism also includes: The first groove is formed at the bottom of the pusher column and extends into the piston rod. A second groove is formed on the top inner wall of the first groove. The inner wall diameter of the second groove is larger than the inner wall diameter of the first groove. An insert block and an insert rod are respectively sleeved on the inner walls of the second groove and the first groove, and the insert block and the insert rod are fixedly connected on the side close to each other; The connecting pipe is fixedly arranged on the outer wall of the cylinder body, and two ends of the connecting pipe are respectively communicated with the interior of the cylinder body and the interior of the second groove.

3. A refrigerant filling machine based on a refrigerator according to claim 2, characterized in that: The outer wall of the connecting pipe is provided with a first valve body and a pressure relief valve, and the first valve body is located at one end of the connecting pipe close to the cylinder body, and the inner side wall of the second groove is provided with an air relief hole; The side walls of the insert block and the insert rod are designed to be dynamically sealed with the inner side walls of the second groove and the first groove respectively. A spring is sleeved on the side wall of one end of the insert rod located in the second groove and at the bottom of the insert block to make the insert block tend to move upward. The bottom of the insert rod is designed to be arc-shaped. The lower end of the discharge pipe is designed to be arc-shaped, and a socket adapted to the insertion rod is provided at the bottom of the discharge pipe.

4. A refrigerant filling machine based on a refrigerator according to claim 1, characterized in that: The first air guide assembly and the second air guide assembly have the same structure. The first air guide assembly and the second air guide assembly are respectively located at the top and the top of the piston block to drive the piston block to descend or ascend. The first air guide assembly includes: The first conduit is fixedly provided on the outer wall of the cylinder body and is located on the top of the piston block. The end of the first conduit away from the cylinder body is connected to the retention box, the end of the retention box away from the first conduit is connected to the second conduit, the end of the second conduit away from the retention box is connected to the pump body, and the outer wall of the second conduit is provided with a second valve body.

5. A refrigerant filling machine based on a refrigerator according to claim 1, characterized in that: The limiting mechanism includes: The mounting sleeve is fixedly mounted on the outer wall of the discharge pipe, and an external threaded tube is rotatably provided on the outer wall of the mounting sleeve. The outer wall of the external threaded tube is threadedly connected to the internal threaded tube, and the upper end of the outer wall of the internal threaded tube is fixed with a connecting piece arranged in a circular array. The connecting piece is designed in a bent shape so that the connecting piece extends away from one end of the internal threaded tube into the discharge pipe. A driving mechanism for synchronously driving the rotation of the external threaded tubes arranged in the circular array is provided on the top of the disc body; The limiting ring is sleeved on the inner wall of the discharge pipe, and the top of the limiting ring is fixedly connected to one end of the connecting piece located in the discharge pipe.

6. A refrigerant filling machine based on a refrigerator according to claim 5, characterized in that: The limiting mechanism also includes: The pressure sensor is embedded in the bottom of the limiting ring and arranged symmetrically around the center point of the limiting ring; The first sensor is embedded in the bottom of the limiting ring and is symmetrically arranged around the center point of the limiting ring. The first sensor is arranged perpendicular to the pressure sensor. The second sensor is embedded in the top of the pushing column and is arranged corresponding to the position of the first sensor.

7. A refrigerant filling machine based on a refrigerator according to claim 5, characterized in that: The driving mechanism comprises: A gear is rotatably mounted on the top of the disc body. A servo motor is fixedly mounted inside the column. The output shaft of the servo motor is fixedly mounted with a rotating shaft extending to the top of the disc body through a coupling. The rotating shaft is fixedly connected to the disc body. The gear ring is fixedly sleeved on the lower end of the outer wall of the externally threaded tube and meshes with the gear.

8. The refrigerant filling machine based on a refrigerator according to claim 5, characterized in that: A mounting column is fixedly provided on the top of the disc body, a mounting plate for mounting the pump body and the retention box is fixedly provided on the upper end of the side wall of the mounting column, and the side wall of the mounting column is fixedly connected to the outer wall of the cylinder body; The outer wall of the internally threaded tube is slidably connected to the lower end of the side wall of the mounting column to limit the position of the internally threaded tube.

9. A method for filling a refrigerant filling machine based on a refrigerator, characterized in that: Using the refrigerant filling machine based on a refrigerator according to any one of claims 1 to 8, the method comprises the following steps: S1: Adjust the amount of refrigerant stored in the feed pipe according to the refrigerant filling amount of the refrigerator to fill the feed pipe with a specified amount of refrigerant; S2: The refrigerant is transported in the discharge pipe so as to push all the refrigerant in the discharge pipe into the cooling machine through the pushing mechanism to complete the refrigerant filling.

10. The method for filling a refrigerant filling machine based on a refrigerator according to claim 9, characterized in that: In the step S1, the amount of refrigerant stored in the discharge pipe is adjusted by limiting the rising position of the pushing column by the limiting mechanism.

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