CN1188596C - Oil pump apparatus of closed compressor - Google Patents

Abstract

The present invention discloses an oil pump device of a closed compressor. The lower end part of a crank shaft is provided with an oil sucking through hole part, an oil sucking component can not rotate through the arrangement in the oil sucking through hole part, the outer surface of the oil sucking component forms a spiral oil path for guiding oil to rise, the outer surface of the lower end forms a supporting frame of a coupling hook, the supporting frame is supported in a static state, and the lower end forms a rotation prevention plate which is immersed in oil and prevents the oil sucking component by the resistance of the oil. In addition, a pressing ring formed on the upper end of the coupling hook is arranged and pressed on the outer surface of the crank shaft, and the supporting frame is supported through a supporting bearing formed by the lower end. If components of the oil pump device in the structure are reduced, the assembly operation is enhanced, a gap between the oil sucking component and the oil sucking through hole part can be accurately arranged so that the oil can be smoothly sucked.

Description

The oil pump device of hermetic type compressor

Technical field

The invention belongs to hermetic type compressor, particularly be a kind of oil pump device of hermetic type compressor.

Background technique

Hermetic type compressor drives, and has supplied with the oil of heat radiation and lubrication for interior radiating part of hermetic type compressor and cooling part circulation, for this reason, use oil pump device.Fig. 1 is the sectional view of the oil pump device structure of prior art hermetic type compressor, as shown in the figure, and at the seal container 1 inner confined space that forms.Seal container 1 generally is divided into upper container and bottom container, and forms confined space in inside.

Be provided with driven compressor portion and the motor section that driving force is provided in the seal container 1.Motor section is sealed the frame supported of container 1 inside and.Motor driving makes the piston in the pressing chamber do straight reciprocating motion, and the work oil body is finished compression by the inside and outside of fuel tap assemblying body turnover pressing chamber.

From the structure of motor, stator 3 is arranged on the inside of seal container 1 as can be known, and the framework support can rotor rotated 5.In the lower end of stator 3, be provided with in order to support the big envelope 4 of U type braking device 13.

The central authorities that connect rotor 5 are provided with bent axle 7.Bent axle 7 is connected with the piston of driven compressor portion in the top, passes on the power that produces from motor.Radiating part is emitted heat, and the oil 15 of cooling part lubricate is stored at the bottom of seal container 1.In order to make oil 15 be transferred to radiating part and cooling part, and be provided with the oil circuit 8 that connects bent axle 7 inside.Oil circuit 8 penetrates into the top of bent axle 7 always, oily 15 tops that are transferred in the seal container 1.

Be provided with the structure of oil circuit 8 transmission in the underpart of bent axle 7, oil 15 is passed to bent axle 7 inside.That is, the underpart of bent axle 7 is provided with sleeve 9.Sleeve 9 is drums, and its inside is up/down perforation.The upper end portion of sleeve 9 is pressed into the underpart of bent axle 7, and its lower end is immersed in the inside of oil 15.

Be provided with oil suction parts 11 in the inside of sleeve 9.Outer surface along oil suction parts 11 has spiral groove, can guide oil 15.Such oil suction parts 11 are fixed in the sleeve 9 by U type braking device 13, are in relative static conditions.

U type braking device 13 has elasticity in a small amount, and middle part and oil suction parts 11 connect together, and are supporting oil suction parts 11, supports to the side arm 14 that two ends form with the prolongation of U font by hanging over big envelope 4.

Driving principle to the hermetic type compressor pump-unit of original technology describes below: driven compressor, supply with compressed oil body from driven compressor portion.Motor driving, the work oil body compresses in pressing chamber.Promptly by the electromagnetic action between stator 3 and the rotor 5, rotor 5 rotations, and along with the rotation of the bent axle 7 that is pressed into rotor 5, power is communicated to the drive portion of compressor and finishes compression.

In addition, by the rotation of bent axle 7, oil 15 is sucted.That is, its underpart is immersed in the sleeve 9 of oil 15, rotates jointly with bent axle 7.At this moment, oil suction parts 11 are still in the inside of sleeve 9 relatively.This is because oil suction parts 11 are supported on the U type braking device 13 of stator 3.

Thereby, along with fixing of oil suction parts 11, rotation with sleeve 9, rely on the viscous force of oil 15, and the spiral chute that forms along oil suction parts 11 outer surfaces, and with oily 15 oil suctions, and be communicated to oil circuit 8, be drawn onto the top of bent axle 7, be communicated to cooling part and radiating part respectively, play lubricated and thermolysis.

But above-mentioned original technology has following shortcoming: the U type braking device 13 that oil suction parts 11 are supported in the sleeve 9 is installed on the big envelope 4 of stator 3 lower ends setting, promptly for U type braking device 13 is set, be installed in big envelope 4 on the stator 3 in addition.Therefore, can produce increasing of all components number of compressor, make assembling operation complicated.

Longer relatively because of U type braking device 13 to the side arm 14 that two ends prolong, and oil suction parts 11 accurately can not be assigned into sleeve 9 inside.Thus, just can not accurately set the slit between oil suction parts 11 and the sleeve 9, and can not make oil 15 oil suctions smoothly.

Summary of the invention

In order to overcome the problem of above-mentioned existence, the invention provides a kind of structure that simplifies above-mentioned oil pump device, improve the assembling operation of oil pump device, make oil to lubricate more smoothly.

To achieve these goals, the present invention adopts following scheme to implement: be provided with oil suction through-hole section, oil suction parts and coupling hook in the underpart of bent axle, the oil suction through-hole section of bent axle lower end is communicated with the oil circuit of bent axle inside, the oil suction parts are arranged on the inside of oil suction through-hole section, the inner face of oil suction through-hole section and oil suction parts have slit in a small amount, coupling hook is contained in the underpart of bent axle, supports the oil suction parts, and coupling hook and bent axle rotate jointly.

The outside of oil suction parts is provided with the spiral oil circuit that guiding oil rises, be provided with in the lower end of oil suction parts and be immersed in the oil, prevent the swivel plate that prevents of oil suction parts rotation, and be provided with supporting frame along the lower end outer surface of oil suction parts, the oil suction parts are supported on the coupling hook.

Coupling hook is formed by being pressed into ring, supporting axis carrier ring and connecting rod, and it is corresponding with bent axle to be pressed into ring, and a side opening, and is pressed into outside the bent axle, and the supporting axis carrier ring on the coupling hook is supported the oil suction parts, and the connecting rod connection is pressed into ring and supporting axis carrier ring.

The oil suction parts have certain weight, for the supporting axis carrier ring of the common rotation of bent axle, be in static relatively.

In sum, effect of the present invention is as follows: the oil pump device simple structure of hermetic type compressor of the present invention, and make assembling operation improve, and accurate relatively because of the state that is provided with of its oil suction parts, and make the oil suction of oil finish relatively lubricatedly.

As mentioned above, oil pump device of the present invention is that the oil suction parts are inserted into the oil suction through-hole section that is provided with in the bent axle underpart, thus the relative rotation by between the two and oily oil suction is gone, so, it is simple relatively that the structure of oil pump device becomes, and assembling operation is easy.

And, because the oil suction parts are pressed into the outer surface of bent axle, and be connected the hook supporting, and be arranged in the oil suction through-hole section, so, can set the slit between oil suction through-hole section and the oil suction parts relatively accurately, make oily oil suction operation to lubricate and finish.

Description of drawings

Fig. 1 is the sectional view of the oil pump device structure of prior art hermetic type compressor.

Fig. 2 is the structure part sectional view of the oil pump device example of hermetic type compressor of the present invention.

Fig. 3 is the simple oblique drawing that example critical piece of the present invention constitutes.

Among the figure:

1: seal container 3: stator

4: big envelope 5: rotor

7: bent axle 8: the spiral oil circuit

9: sleeve 11: the oil suction parts

13:U type braking device 14: side arm

15: oil 32: oil suction through-hole section

43: supporting frame 45: prevent swivel plate

50: coupling hook 52: be pressed into ring

54: supporting axis carrier ring 56: connecting rod

Embodiment

Below in conjunction with the drawings and specific embodiments the present invention is described in further detail: Fig. 2 is the structure part sectional view of the oil pump device example of hermetic type compressor of the present invention, and Fig. 3 is the simple oblique drawing that example critical piece of the present invention constitutes.

As shown in Figures 2 and 3, be provided with oil suction through-hole section 32 in the underpart of bent axle 7.Oil suction through-hole section 32 is connected with the oil circuit of inside from the underpart formation of bent axle 7.

Oil suction through-hole section 32 is provided with oil suction parts 11.Form the spiral oil circuit 8 of the oily oil suction of guiding along the outside of oil suction parts 11.On oil suction parts 11, be provided with supporting frame 43.Supporting frame 43 is that the supporting axis carrier ring 54 that is connected hook 50 supports that supporting frame 43 is processed very smoothly, is static in order to make oil suction parts 11 with respect to the supporting axis carrier ring 54 of rotation.

Oil suction parts 11 almost are state of rest in oil suction through-hole section 32, and oil suction parts 11 have certain weight.Also the stone roller with constant weight can be set on oil suction parts 11.Be provided with several in the underpart of oil suction parts 11 and prevent swivel plate 45.Prevent that swivel plate 45 is immersed in the oil 15, prevent 11 rotations of oil suction parts.So, prevent swivel plate 45 setting be towards with the opposite direction of bent axle 7 sense of rotation.

Oil suction parts 11 are located in the oil suction through-hole section 32, support with coupling hook 50.Coupling hook 50 upper ends be provided be pressed into bent axle 7 outer surfaces be pressed into the ring 52.Being pressed into ring 52 is ring-types of a side opening, and its internal diameter is more a little bit smaller a little than the external diameter of bent axle 7, and presses the outside that is inserted in bent axle 7.

Coupling hook 50 lower ends are provided with supporting axis carrier ring 54.Supporting axis carrier ring 54 is being supported the supporting frame 43 of oil suction parts 11, supporting frame 43 processing smoother.Therefore, supporting axis carrier ring 54 can be supported the oil suction parts 11 under the state of rest, and self can rotate, and supporting axis carrier ring 54 also is the ring-type of a side opening.

Being pressed into ring 52 is connected bar 56 and couples together with supporting axis carrier ring 54.Connecting rod 56 is that the weight of supporting oil suction parts 11 is only established 2 connecting rods 56 in this example with being pressed into that ring 52 couples together with supporting axis carrier ring 54.The number that connecting rod 56 is provided with will reach the intensity that can support oil suction parts 11.

The running that below detailed description is had the example of the present invention of above-mentioned structure: driven compressor, bent axle 7 rotation is compressed the work oil body, and the oil circuit by bent axle 7 with oil to the top oil suction.That is, owing to be provided with static oil suction parts 11 at the bent axle 7 of rotation, inside is formed with oil suction through-hole section 32, and between bent axle 7 and oil suction parts 11, oil is transmitted.Particularly by the spiral oil circuit 8 of oil suction parts 11, oil is directed rising.

Oil suction parts 11 static is that the supporting frame 43 of oil suction parts 11 is connected the supporting axis carrier ring 54 of hook 50 and supports that the rotation on the oil suction parts 11 prevents that plate 45 is immersed in the oil owing to have certain weight, is subjected to the resistance of oil and prevents 11 rotations of oil suction parts.

Coupling hook 50 rotation, oil suction parts 11 do not rotate, and reason is that oil suction parts 11 have certain weight, the very smooth cause that supporting axis carrier ring 54 and supporting frame 43 are processed.

The following describes the assembling of oil pump device of the present invention, oil suction parts 11 are connected hook 50 and are supporting to be arranged in the oil suction through-hole section 32.So under oil suction parts 11 were directly installed on state on the coupling hook 50, to be installed in the outer surface of bent axle 7 just passable with the ring 52 that is pressed into of coupling hook 50.

Supporting axis carrier ring 54 in the coupling hook 50, in order to support absorbing member 11, a side of supporting axis carrier ring 54 is openings, so, make it under the state of certain elastic deformation, be inserted in supporting frame 43, and be pressed into ring 52 also under the state of certain deformation, overlapping the outer surface that is pressed into bent axle 7.

Claims (4)

1. the oil pump device of a hermetic type compressor, it is characterized in that being provided with oil suction through-hole section (32), oil suction parts (11) and coupling hook (50) in the underpart of bent axle (7), the oil suction through-hole section (32) of bent axle (7) lower end is communicated with the oil circuit of bent axle (7) inside, oil suction parts (11) are arranged on the inside of oil suction through-hole section (32), the inner face of oil suction through-hole section (32) and oil suction parts (11) have slit in a small amount, coupling hook (50) is contained in the underpart of bent axle (7), support oil suction parts (11), coupling hook (50) and the common rotation of bent axle (7).

2. according to the oil pump device of the described hermetic type compressor of claim 1, the outside that it is characterized in that oil suction parts (11) is provided with the spiral oil circuit (8) that guiding oil (15) rises, be immersed in the oil (15) and be provided with in the lower end of oil suction parts (11), what prevent oil suction parts (11) rotations prevents swivel plate (45), and the lower end outer surface along oil suction parts (11) is provided with supporting frame (43), and oil suction parts (11) are supported on the coupling hook (50).

3. according to the oil pump device of the described hermetic type compressor of claim 2, it is characterized in that coupling hook (50) forms by being pressed into ring (52), supporting axis carrier ring (54) and connecting rod (56), it is corresponding with bent axle (7) to be pressed into ring (52), an and side opening, and be pressed into outside the bent axle (7), supporting axis carrier ring (54) on the coupling hook (50) is supported oil suction parts (11), and connecting rod (56) connection is pressed into ring (52) and supporting axis carrier ring (54).

4. according to the oil pump device of the described hermetic type compressor of claim 3, it is characterized in that oil suction parts (11) have certain weight, for the supporting axis carrier ring (54) of the common rotation of bent axle (7), oil suction parts (11) are in static relatively.

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