Rotation-stopping noise-reducing oil pumping device and compressor

Abstract

The utility model belongs to the technical field of compressors, and particularly discloses a rotation-stopping noise-reducing oil pumping device and a compressor. The rotation-stopping noise-reducing oil pumping device comprises a machine body, a crankshaft, an oil suction pipe, an oil suction pipe core and a fixing piece, the rotation-stopping noise-reducing oil pumping device is applied to a compressor, the crankshaft drives the oil suction pipe to rotate so as to drive refrigerating machine oil in an oil pool to rotate, the oil suction pipe core is connected with a machine body through the fixing piece and does not rotate, the rotation-stopping blade at the lower end of the oil suction pipe core stops the refrigerating machine oil from rotating, and the rotating speed of the refrigerating machine oil is reduced; the flowing noise of refrigerating machine oil is reduced; the rotation stopping blades stop rotation of refrigerating machine oil so as to reduce centrifugal force, the descending amplitude of the oil liquid level in the center of the oil pool is reduced, and therefore on the premise that the oil injection amount is reduced, the enough oil liquid level height can still be kept, and the product cost is reduced. Meanwhile, due to the low oil level, the situation that refrigerating machine oil splashes to the rotor and the stator of the motor is reduced, and impact noise is lowered.

Description

Technical Field

[0001] The utility model belongs to the technical field of compressors and relates to a rotation-stopping and noise-reducing oil pump device and a compressor. Background Art

[0002] The compressor pumps the refrigeration oil upward from the oil pool through its oil pumping device, and transports the refrigeration oil to the friction pair along the oil path to achieve lubrication, reduce wear and improve reliability. However, when the existing compressor's oil pumping device is in operation, the high-speed rotating oil suction pipe drives the refrigeration oil in the oil pool to rotate at high speed. Due to the centrifugal force, the refrigeration oil in the oil pool moves outward along the axis of the oil pump. In addition, due to the unbalanced effects such as the reciprocating inertia force of the compressor, the movement vibrates, driving the oil pumping device to produce irregular vibrations, causing the oil suction pipe to rotate non-axially, but to produce radial displacement while rotating axially, thereby increasing the stirring amplitude of the refrigeration oil in the oil pool, and the refrigeration oil produces flow noise. Furthermore, the refrigeration oil moves outward under the action of centrifugal force, causing the oil level at the center position to drop. The drop in the oil level will cause the oil suction pipe to be inserted into the oil pool to an insufficient depth, resulting in insufficient oil supply to the oil pumping device, and even the oil level drops below the oil suction pipe, making it impossible to supply oil, resulting in problems such as wear and jamming of moving parts. Therefore, safety needs to be considered in the design, and the amount of oil added is usually large to keep the oil level high, but this leads to higher product costs. In addition, an excessively high oil level may cause the stirring and rotating refrigeration oil to splash onto the motor rotor and stator, generating additional impact noise. Utility Model Content

[0003] The utility model aims to provide a rotation-stopping and noise-reducing oil pump device and a compressor, so as to stop the rotation of refrigeration oil and reduce noise.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A rotation-stopping and noise-reducing oil pump device comprises a machine body, a crankshaft, an oil suction pipe, an oil suction pipe core and a fixing member arranged on the machine body;

[0006] An oil pool is provided at the bottom of the body, and the oil pool is filled with refrigeration oil;

[0007] The crankshaft is provided with an oil passage;

[0008] The upper end of the oil suction pipe is connected to the lower end of the crankshaft, and the oil suction pipe is communicated with the oil passage;

[0009] The upper end of the oil suction pipe core extends into the oil suction pipe, and the lower end side of the oil suction pipe core is provided with at least one anti-rotation blade, the anti-rotation blade is arranged along the radial direction of the oil suction pipe core, and the anti-rotation blade is partially or completely immersed in the refrigeration oil;

[0010] The oil suction pipe core is connected to the machine body via a fixing member.

[0011] Preferably, the fixing member is configured as a suspension spring, an assembly hole is provided at the lower end of the oil suction pipe core, and the suspension spring is assembled to connect the assembly hole and the machine body.

[0012] Preferably, the machine body is provided with a motor stator frame, and the suspension spring is assembled and connected to the motor stator frame.

[0013] Preferably, the side wall of the oil suction pipe core is provided with a guide plate, and the guide plate is arranged in an axial spiral along the oil suction pipe core.

[0014] Preferably, an avoidance slot is left between the anti-rotation blade and the oil suction pipe core.

[0015] Preferably, the number of the anti-rotation blades is four, and the four anti-rotation blades are arranged at equal intervals along the circumference of the oil suction pipe core.

[0016] Preferably, the crankshaft drives the oil suction pipe to rotate, and the rotation of the oil suction pipe drives the refrigeration oil in the oil pool to rotate; one side of the anti-rotation blade is recessed inward to form an arc surface, and the direction of the arc surface is opposite to the rotation direction of the refrigeration oil.

[0017] A compressor is provided with the above-mentioned anti-rotation and noise-reducing oil pumping device.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] As described above, the utility model relates to a rotation-stopping and noise-reducing oil pump device, which is applied to a compressor. The crankshaft drives the oil suction pipe to rotate and then drives the refrigeration oil in the oil pool to rotate. Since the oil suction pipe core is connected to the body through a fixing part and does not rotate, the rotation-stopping blades at the lower end of the oil suction pipe core block the rotation of the refrigeration oil, thereby reducing the rotation speed of the refrigeration oil and the flow noise of the refrigeration oil; the rotation-stopping blades block the rotation of the refrigeration oil to reduce the centrifugal force, thereby reducing the drop in the oil level at the center of the oil pool, thereby maintaining a sufficient oil level height while reducing the oil injection amount, thereby reducing product costs; at the same time, the lower oil level also reduces the splashing of refrigeration oil onto the motor rotor and stator, thereby reducing impact noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0021] Figure 1 This is an exploded view of the assembly of the compressor of the utility model embodiment;

[0022] Figure 2 The three-dimensional oil absorption tube core of the utility model embodiment Figure 1 ;

[0023] Figure 3 The three-dimensional oil absorption tube core of the utility model embodiment Figure 2 . DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0026] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0030] Example:

[0031] like Figures 1 to 3 As shown, the anti-rotation and noise-reducing oil pump device of this embodiment includes a body, a crankshaft, an oil suction pipe 2, an oil suction pipe core 3 and a fixing part 4 arranged inside the body.

[0032] An oil pool is provided at the bottom of the body, and the oil pool is filled with refrigeration oil 5. Specifically, the body includes an upper shell 11, a lower shell 12 and a movement 13. The upper shell 11 and the lower shell 12 are assembled to form a shell, the bottom of the shell is an oil pool, the movement 13 is located inside the shell, a crankshaft is provided on the movement 13, and an oil channel is provided on the crankshaft.

[0033] The upper end of the oil suction pipe 2 is inserted into the assembly port at the lower end of the crankshaft, the oil suction pipe 2 is communicated with the oil passage on the crankshaft, and the lower end of the oil suction pipe 2 extends into the refrigeration oil 5 in the oil pool.

[0034] The upper end of the oil suction pipe core 3 extends into the oil suction pipe 2 through the opening at the lower end of the oil suction pipe. At least one anti-rotation blade 31 is provided on the side of the lower end of the oil suction pipe core 3. The anti-rotation blade 31 is arranged along the radial direction of the oil suction pipe core 3. The anti-rotation blade 31 is partially or completely immersed in the refrigeration oil 5. There are four anti-rotation blades 31, and the four anti-rotation blades 31 are arranged at equal intervals along the circumference of the oil suction pipe core 3.

[0035] The oil suction pipe core 3 is connected to the machine body via the fixing member 4 to limit the rotation of the oil suction pipe core 3, thereby limiting the rotation of the anti-rotation blade 31. Specifically, the fixing member 4 is configured as a suspension spring, and an assembly hole 32 is provided at the lower end of the oil suction pipe core 3. The suspension spring is assembled to connect the assembly hole 32 and the machine body. A motor stator frame 131 is provided on the machine core 13 of the machine body, and the suspension spring is assembled to connect the side of the motor stator frame 131.

[0036] The side wall of the oil suction pipe core 3 is provided with a guide plate 33, and the guide plate 33 is arranged in a spiral along the axial direction of the oil suction pipe core 3. A spirally arranged oil supply channel is formed between the oil suction pipe core 3, the guide plate 33 and the oil suction pipe 2. When the oil suction pipe 2 rotates, the refrigeration oil between the oil suction pipe 2 and the oil suction pipe core 3 is transported to the oil channel on the crankshaft along the oil supply channel and further transported to the friction pair of the compressor.

[0037] An avoidance notch 34 is reserved between the anti-rotation blade 31 and the oil suction pipe core 3 to prevent the anti-rotation blade 31 from interfering with the oil suction pipe 2 when the oil suction pipe 2 rotates relative to the oil suction pipe core 3 .

[0038] The crankshaft drives the oil suction pipe 2 to rotate, and the rotation of the oil suction pipe 2 drives the refrigeration oil in the oil pool to rotate; one side of the anti-rotation blade 31 is concave inward to form an arc surface, and the direction of the arc surface is opposite to the rotation direction of the refrigeration oil 5. In this way, the resistance of the anti-rotation blade 31 to the refrigeration oil 5 is increased, and the rotation speed of the refrigeration oil 5 is reduced.

[0039] A compressor is provided with the anti-rotation and noise-reducing oil pumping device described in the embodiment.

[0040] So far, the present embodiment has been described in detail in conjunction with the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the anti-rotation and noise-reducing oil pump device and compressor of the utility model. The anti-rotation and noise-reducing oil pump device of the utility model is applied to the compressor, and the crankshaft drives the oil suction pipe 2 to rotate and then drives the refrigeration oil 5 in the oil pool to rotate. Because the oil suction pipe core 3 is connected to the body through the fixing part 4 and does not rotate, the anti-rotation blade 31 at the lower end of the oil suction pipe core 3 blocks the rotation of the refrigeration oil 5, reduces the rotation speed of the refrigeration oil 5, and reduces the flow noise of the refrigeration oil 5; the anti-rotation blade 31 blocks the rotation of the refrigeration oil to reduce the centrifugal force, reduces the drop in the oil level at the center of the oil pool, and then can maintain a sufficient oil level height under the premise of reducing the amount of oil injection, thereby reducing product costs; at the same time, the lower oil level also reduces the splashing of the refrigeration oil 5 onto the motor rotor and stator, reducing the impact noise.

[0041] Of course, the above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept of the utility model, or direct / indirect application in other related technical fields are included in the patent protection scope of the utility model and should be protected by the utility model.

Claims

1. A rotation-stopping and noise-reducing oil pump device, characterized in that: It includes a machine body, a crankshaft, an oil suction pipe, an oil suction pipe core and a fixing part arranged on the machine body; An oil pool is provided at the bottom of the body, and the oil pool is filled with refrigeration oil; The crankshaft is provided with an oil passage; The upper end of the oil suction pipe is connected to the lower end of the crankshaft, and the oil suction pipe is communicated with the oil passage; The upper end of the oil suction pipe core extends into the oil suction pipe, and the lower end side of the oil suction pipe core is provided with at least one anti-rotation blade, the anti-rotation blade is arranged along the radial direction of the oil suction pipe core, and the anti-rotation blade is partially or completely immersed in the refrigeration oil; The oil suction pipe core is connected to the machine body via a fixing member.

2. The anti-rotation and noise-reducing oil pump device according to claim 1, characterized in that: The fixing member is configured as a suspension spring, a mounting hole is provided at the lower end of the oil suction pipe core, and the suspension spring is assembled to connect the mounting hole and the machine body.

3. The anti-rotation and noise-reducing oil pump device according to claim 2 is characterized in that: The machine body is provided with a motor stator frame, and the suspension spring is assembled and connected to the motor stator frame.

4. The anti-rotation and noise-reducing oil pump device according to claim 1, characterized in that: The side wall of the oil suction pipe core is provided with a guide plate, and the guide plate is arranged in a spiral along the axial direction of the oil suction pipe core.

5. The anti-rotation and noise-reducing oil pump device according to claim 1, characterized in that: An avoidance slot is reserved between the anti-rotation blade and the oil suction pipe core.

6. The anti-rotation and noise-reducing oil pump device according to claim 1, characterized in that: The number of the anti-rotation blades is four, and the four anti-rotation blades are arranged at equal intervals along the circumference of the oil suction pipe core.

7. The anti-rotation and noise-reducing oil pump device according to claim 1, characterized in that: The crankshaft drives the oil suction pipe to rotate, and the rotation of the oil suction pipe drives the refrigeration oil in the oil pool to rotate; one side of the anti-rotation blade is concave inward to form an arc surface, and the direction of the arc surface is opposite to the rotation direction of the refrigeration oil.

8. A compressor, characterized in that: The compressor is provided with the anti-rotation and noise-reducing oil pump device according to any one of claims 1 to 7.

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