Refrigerating machine oil flow speed control device with oil suction pipe

Abstract

The utility model discloses a refrigerating machine oil flow speed control device with an oil suction pipe, and belongs to the technical field of refrigeration compressors. A refrigerating machine oil flow speed control device with an oil suction pipe comprises a crankshaft installed on an air cylinder seat, an installation groove is formed in the end, away from the air cylinder seat, of the crankshaft, the oil suction pipe is installed on the inner side of the installation groove, and a floating ring is installed on the outer side of the oil suction pipe; a connecting base is installed at the end, close to the crankshaft, of the oil suction pipe, guide blocks are installed on the outer side of the connecting base and the outer side of the oil suction pipe respectively, the two guide blocks are located on the same straight line, and limiting grooves for the guide blocks to slide are formed in the inner side wall of the crankshaft. The oil suction pipe can flexibly float along with changes of the oil level of the refrigerator, it is ensured that oil can be effectively sucked at different liquid levels, and therefore the oil suction efficiency and flexibility are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigeration compressors, and particularly relates to a device for controlling the flow rate of refrigerant oil with an oil suction pipe. Background Art

[0002] In the traditional structure of a refrigeration compressor, the oil suction pipe is made by means of interference fit with a hole in the crankshaft; and during operation, it is necessary to ensure sufficient oil volume to guarantee good lubrication of a series of moving mechanisms such as the crankshaft, connecting rod, and piston under high and low rotational speeds; in reality, it is impossible to precisely determine the given oil volume by combining the designed and actual oil pumping height; in order to ensure normal and effective lubrication of the compressor under both high and low rotational speeds, the actual oil level must be greater than the designed oil level, and the oil pumping port must be located in the deepest oil level; therefore, the actual oil injection volume in production will be on the high side, resulting in increased costs and having no good competitive advantage in the compressor manufacturing industry. Summary of the Invention

[0003] The purpose of the utility model is to address the problems existing in the prior art, and provide a device for controlling the flow rate of refrigerant oil with an oil suction pipe.

[0004] To achieve the above purpose, the utility model adopts the following technical solution: a device for controlling the flow rate of refrigerant oil with an oil suction pipe, including a crankshaft installed on a cylinder block, one end of the crankshaft away from the cylinder block is provided with an installation groove, an oil suction pipe is installed inside the installation groove, and a floating ring is installed outside the oil suction pipe; a limiting and anti - detachment member is provided between the oil suction pipe and the installation groove.

[0005] By adopting the above technical solution, the oil suction pipe for controlling the flow rate of refrigerant oil realizes precise control of the flow rate and flow volume of refrigerant oil through mechanisms such as crankshaft rotation, oil suction pipe follow - up, floating ring self - adaptive adjustment, and stable sliding of the guide block in the limiting groove, improving the performance and reliability of the refrigeration equipment.

[0006] Optionally, one end of the oil suction pipe away from the crankshaft is of a reduced - diameter structure.

[0007] By adopting the above technical solution, the reduced - diameter structure can enhance the oil pumping effect or limit the oil flow rate.

[0008] Optionally, one end of the oil suction pipe away from the crankshaft is provided with an oil suction hole.

[0009] By adopting the above technical solution, the oil suction hole can be used to suck refrigerant oil.

[0010] Optionally, a partition is installed inside the oil suction pipe, the partition is located in the middle position of the oil suction pipe, one end of the partition close to the inner wall of the oil suction pipe is arc - shaped, and divides the internal space of the oil suction pipe into two regions.

[0011] By adopting the above technical solution, the partition plate can play a role in rotating and pumping oil, and can also be used to separate the oil fluid or enhance the oil fluid flow effect.

[0012] Optionally, the floating ring is installed at one end close to the oil suction hole, and there is a height difference of 1 cm - 4 cm between the lower end of the floating ring and the bottom end of the oil suction pipe. The floating ring is of a cavity structure, and the lower end of the floating ring is a curved surface structure, and the end of the floating ring close to the crankshaft is a flat surface structure.

[0013] By adopting the above technical solution, due to the design of the height difference, the oil suction hole on the oil suction pipe is always located in the liquid.

[0014] Optionally, the limit and anti - detachment part includes a connection seat installed on the outer side of the oil suction pipe. Guide blocks are respectively installed on the connection seat and the outer side of the oil suction pipe. The two guide blocks are on the same straight line. A limit groove for the guide block to slide is provided on the inner side wall of the crankshaft. A perforation is provided on the inner side wall of the limit groove, and a C - shaped expansion pin is installed inside the perforation.

[0015] By adopting the above technical solution, through the C - shaped expansion pin installed inside the perforation, its expansion characteristic is used to limit the limited oil pumping stroke of the floating ring, and at the same time prevent the oil suction pipe from falling off during high - speed rotation, ensuring the stable operation of the system.

[0016] Optionally, the two guide blocks have the same specifications, and the ends of the guide blocks away from the connection seat and the oil suction pipe are semi - circular.

[0017] By adopting the above technical solution, due to the design of the guide block, it is convenient to slide in the limit groove.

[0018] Optionally, two oil ports are provided on the outer side of the crankshaft, and an inclined oil groove is provided between the two oil ports. The inclined oil groove is spirally wound around the outer side of the crankshaft.

[0019] By adopting the above technical solution, being spirally wound around the outer side of the crankshaft, it generates an oil pumping effect through rotation and helps the oil fluid to circulate inside the crankshaft at the same time.

[0020] Compared with the prior art, the beneficial effects of the present utility model are:

[0021] 1. By designing the combination of the floating ring and the oil suction pipe, the oil suction pipe can flexibly float with the change of the liquid level of the refrigeration oil, ensuring effective oil suction at different liquid levels, thus improving the efficiency and flexibility of oil suction; 2. The traditional oil suction pipe and the crankshaft are in an interference fit. During the oil suction process, they rotate integrally with the crankshaft without other movements. The oil suction pipe has always been single and at the lowest and deepest liquid level. The oil pumping volume is proportional to the rotational speed, and the oil injection volume and fuel consumption are large. In this application, the oil suction pipe can rotate in a circle with the crankshaft and assist in pumping oil through centrifugal force. This design enables the oil suction pipe to flexibly adjust its position according to the change of the oil liquid level, thereby more effectively sucking oil. At high rotational speeds, since the oil suction pipe always remains on the surface of the oil liquid level, the vortex generated during the oil pumping process will limit the oil pumping volume, thus achieving an oil control effect, which helps to reduce unnecessary oil circulation and energy consumption; 3. The cooperation between the guide block and the limit groove, as well as the setting of the limit anti - detachment part, ensure the stability and safety of the oil suction pipe during the floating process, preventing failures and accidents caused by detachment or displacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic three - dimensional connection structure diagram of the cylinder block and the crankshaft of the present utility model;

[0023] Figure 2 is a schematic three - dimensional structure diagram of the crankshaft of the present utility model;

[0024] Figure 3 is a schematic cross - sectional structure diagram of the crankshaft of the present utility model;

[0025] Figure 4 is a schematic three - dimensional structure diagram of the oil suction pipe of the present utility model;

[0026] Figure 5 is a schematic cross - sectional structure diagram of the oil suction pipe of the present utility model;

[0027] Figure 6 is a schematic cross - sectional structure diagram of the floating ring of the present utility model;

[0028] Figure 7 is a schematic three - dimensional structure diagram of the C - shaped expansion pin of the present utility model.

[0029] In the figure: 1. Cylinder block; 2. Crankshaft; 21. Oil port; 22. Inclined oil groove; 3. Installation groove; 4. Oil suction pipe; 401. Oil suction hole; 402. Partition; 5. Floating ring; 6. Connecting seat; 7. Guide block; 8. Limit groove; 9. Limit anti - detachment part; 91. Perforation; 92. C - shaped expansion pin. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work fall within the protection scope of the present utility model.

[0031] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model.

[0032] As Figure 1 shown in -7, the specific solution of the embodiment is as follows: A refrigerant oil flow rate control device with an oil suction pipe includes a crankshaft 2 installed on a cylinder block 1. The crankshaft 2, as the main rotating component of the engine, not only transmits power but also controls the flow rate of the refrigerant oil through its special design. Two oil ports 21 are provided on the outer side of the crankshaft 2. The oil ports 21 are used to guide the refrigerant oil into the interior of the crankshaft 2. An inclined oil groove 22 is provided between the two oil ports 21. The inclined oil groove 22 is spirally wound around the outer side of the crankshaft 2. The design of the inclined oil groove 22 can generate a pumping effect through rotation and at the same time help the oil to circulate inside the crankshaft 2. An installation groove 3 is provided at one end of the crankshaft 2 away from the cylinder block 1;

[0033] An oil suction pipe 4 is installed inside the installation groove 3. The oil suction pipe 4 can control the flow rate and flow volume of the refrigerant oil by rotating with the crankshaft 2 and generating centrifugal force. The oil suction pipe 4 is in sliding fit with the installation groove 3, and there is a small clearance between the outer side wall of the oil suction pipe 4 and the installation groove 3, which can ensure that the oil suction pipe 4 makes a relative up and down movement inside the installation groove 3. One end of the oil suction pipe 4 away from the crankshaft 2 is a reduced diameter structure, which can enhance the pumping effect or limit the oil flow rate. An oil suction hole 401 is provided at one end of the oil suction pipe 4 away from the crankshaft 2. The oil suction hole 401 is used to suck the refrigerant oil. A partition 402 is installed inside the oil suction pipe 4. The partition 402 is located at the middle position of the oil suction pipe 4. One end of the partition 402 close to the inner side wall of the oil suction pipe 4 is arc-shaped, and divides the internal space of the oil suction pipe 4 into two regions. The partition 402 can play a role in rotational pumping, and at the same time can also be used to separate the oil or enhance the oil flow effect.

[0034] A floating ring 5 is installed on the outer side of the oil suction pipe 4. The floating ring 5 can adjust the position of the oil suction pipe 4 according to the change of the oil liquid level, so as to control the oil pumping volume. The floating ring 5 is installed at one end close to the oil suction hole 401, and there is a height difference of 1 cm - 4 cm between the lower end of the floating ring 5 and the bottom end of the oil suction pipe 4. The design of the 1 cm - 4 cm height difference enables the oil suction hole 401 on the oil suction pipe 4 to always be located in the liquid. The floating ring 5 has a cavity structure. The design of the cavity structure enables the floating ring 5 to float on the liquid. And the lower end of the floating ring 5 has a curved surface structure. The design of the curved surface structure can better adapt to the change of the oil liquid level. One end of the floating ring 5 close to the crankshaft 2 is a flat structure;

[0035] A limit and anti - detachment part 9 is arranged between the oil suction pipe 4 and the installation groove 3. The limit and anti - detachment part 9 includes a connecting seat 6 installed on the outer side of the oil suction pipe 4. Guide blocks 7 are respectively installed on the outer side of the connecting seat 6 and the oil suction pipe 4. The two guide blocks 7 are on the same straight line. The two guide blocks 7 have the same specifications, and the end of the guide block 7 away from the connecting seat 6 and the oil suction pipe 4 is semi - circular. The design of the guide block 7 and the connecting seat 6 enables the oil suction pipe 4 to slide stably inside the installation groove 3 and limits its movement range.

[0036] A limit groove 8 for the guide block 7 to slide is opened on the inner side wall of the crankshaft 2. The length of the limit groove 8 is the same as the length of the installation groove 3, and the length of the limit groove 8 is longer than the length of the connecting seat 6. The design of the limit groove 8 allows the guide block 7 to slide, ensuring that the oil suction pipe 4 can only move in a specific direction. A perforation 91 is opened on the inner side wall of the limit groove 8. The perforation 91 is located at one - third of the limit groove 8. A C - shaped expansion pin 92 is installed inside the perforation 91. The C - shaped expansion pin 92 can limit the limited oil pumping stroke of the floating ring 5. Through the C - shaped expansion pin 92 installed inside the perforation 91, its expansion characteristic limits the limited oil pumping stroke of the floating ring 5, and at the same time prevents the oil suction pipe 4 from falling off during high - speed rotation, ensuring the stable operation of the system.

[0037] During low - speed constant operation, the oil liquid level of the compressor is sufficient. The floating ring 5 of the oil suction pipe 4 makes the oil suction pipe 4 at a higher limit position due to buoyancy; when the speed is high, the oil consumption is large. The increase in speed leads to an increase in the oil pumping volume, and the oil liquid level will drop sharply. At the same time, an oil suction vortex is generated, which will directly affect the oil suction pipe 4 from pumping oil fully and in sufficient quantity. At this moment, it can effectively control the oil pumping volume during high - speed operation; this technology can be widely applied to the fields of refrigeration equipment, refrigeration appliances, and air pump valve groups.

[0038] The working principle of the above - mentioned embodiment is as follows:

[0039] The crankshaft 2, as the main rotating component of the engine, generates an oil pumping effect during rotation through the inclined oil groove 22 opened on its outer side. The inclined oil groove 22 is spirally wound around the outer side of the crankshaft 2. As the crankshaft 2 rotates, the oil is guided and flows along the inclined oil groove 22 to form a cycle, thereby helping the oil to be evenly distributed inside the crankshaft 2. As the crankshaft 2 rotates, the suction pipe 4 moves up and down relative to each other in the installation groove 3 under the action of centrifugal force. This movement helps to adjust the relative position of the oil suction hole 401 and the oil liquid level, thereby affecting the oil pumping volume and flow rate. The floating ring 5, with its cavity structure and lower end curved surface design, can float on the oil liquid surface and adaptively adjust its position with the change of the oil liquid level. The height difference design between the floating ring 5 and the bottom end of the suction pipe 4 ensures that the oil suction hole 401 is always located in the liquid, and even when the oil liquid level drops sharply at high speeds, effective oil pumping can be maintained. The guide blocks 7 installed on the suction pipe 4 and the connecting seat 6 cooperate with the limit groove 8 on the inner side wall of the crankshaft 2 to ensure that the suction pipe 4 can only slide stably in a specific direction. The perforation 91 and the C-shaped expansion pin 92 are provided on the limit groove 8, and their expansion characteristics limit the limited oil pumping stroke of the floating ring 5 and prevent the suction pipe 4 from falling off under extreme conditions.

[0040] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A refrigeration oil flow rate control device having an oil suction pipe, characterized in that: The invention comprises a crankshaft (2) mounted on a cylinder seat (1); a mounting groove (3) is provided at one end of the crankshaft (2) away from the cylinder seat (1); an oil suction pipe (4) is mounted on the inner side of the mounting groove (3); a floating ring (5) is mounted on the outer side of the oil suction pipe (4); and a limit stopper (9) is provided between the oil suction pipe (4) and the mounting groove (3).

2. The refrigeration oil flow rate control device with an oil suction pipe according to claim 1, characterized in that: The end of the oil suction pipe (4) away from the crankshaft (2) is a constricted structure.

3. The refrigeration oil flow rate control device with an oil suction pipe according to claim 1, characterized in that: An oil suction hole (401) is provided at one end of the oil suction pipe (4) away from the crankshaft (2).

4. The refrigeration oil flow rate control device with an oil suction pipe according to claim 1, characterized in that: A partition (402) is installed on the inner side of the oil suction pipe (4), and the partition (402) is located in the middle of the oil suction pipe (4). One end of the partition (402) close to the inner wall of the oil suction pipe (4) is arc-shaped, and divides the internal space of the oil suction pipe (4) into two areas.

5. The refrigeration oil flow rate control device with an oil suction pipe according to claim 3, characterized in that: The floating ring (5) is installed at one end close to the oil suction hole (401), and there is a height difference of 1 cm-4 cm between the lower end of the floating ring (5) and the bottom end of the oil suction pipe (4). The floating ring (5) is a hollow structure, and the lower end of the floating ring (5) is a curved surface structure. The end of the floating ring (5) close to the crankshaft (2) is a flat structure.

6. The refrigeration oil flow rate control device with an oil suction pipe according to claim 1, characterized in that: The limit anti-slip component (9) comprises a connecting seat (6) installed on the outside of the oil suction pipe (4), the connecting seat (6) and the outside of the oil suction pipe (4) are respectively installed with guide blocks (7), the two guide blocks (7) are located on the same straight line, the inner wall of the crankshaft (2) is provided with a limit groove (8) for the guide block (7) to slide, the inner wall of the limit groove (8) is provided with a through hole (91), and a C-shaped expansion pin (92) is installed on the inner side of the through hole (91).

7. The refrigeration oil flow rate control device with an oil suction pipe according to claim 6, characterized in that: The two guide blocks (7) have the same specifications, and one end of the guide block (7) away from the connecting seat (6) and the oil suction pipe (4) is semicircular.

8. The refrigeration oil flow rate control device with an oil suction pipe according to claim 1, characterized in that: Two oil ports (21) are provided on the outer side of the crankshaft (2), an inclined oil groove (22) is provided between the two oil ports (21), and the inclined oil groove (22) is spirally wound on the outer side of the crankshaft (2).

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