CN1089405C

CN1089405C - Oil pickup member for hermetic compressor

Info

Publication number: CN1089405C
Application number: CN97119986A
Authority: CN
Inventors: 李炳圭
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 1997-10-30
Filing date: 1997-10-30
Publication date: 2002-08-21
Anticipated expiration: 2017-10-30
Also published as: CN1216802A

Abstract

The present invention relates to an oil pickup component for a hermetic compressor, which comprises a body, and the body has an upper part and a lower part, wherein the upper part is made into a hollow straight cylinder, the upper part has predetermined diameter, and connecting elements are formed on both sides of one end of the upper part; the diameter of the lower part is smaller than that of the upper part, and the plate blades of one or a plurality of blade wheels are fixed in the lower part. Each connecting element arranged on the upper part comprises a pair of patulous arms which are formed on both sides of the upper end part of each connecting element and are cut into long strips, and the patulous arms use a shaft line of the body as a center. The oil pickup component for a hermetic compressor has the advantages of capability of reducing the vortex sound and the splashing sound of lubricating oil, easy manufacture and low cost.

Description

The oil pumping member of closed compressor

Technical field

The present invention relates to a kind of oil pumping member of closed compressor, particularly relate to a kind of improved oil pumping member, it forms straight line, aspirate lubricant oil when rotated, and by means of doing the lower diameter of oil pumping member forr a short time than upper part diameter, the eddy current of oil and the noise that splashes and produced in the time of can reducing the rotation of oil pumping member.

Background technique

Fig. 1 is an existing closed compressor.As shown in Figure 1, the motor 3 with rotor 3a and stator 3b is installed in the container 1 of a sealing, and this container 1 is made up of last shell 1a and lower casing 1b.

One end of support spring 6 is fixed on the inside of lower casing 1b, and framework 2 then is bearing on the other end of these support springs 6.

The bent axle 10 that the top has an eccentric part 10a is packed in the rotor 3a, and cylinder 7 is connected the top of framework 2.

The piston 8 of making horizontal reciprocating movement in cylinder 7 is installed on the eccentric part 10a of bent axle 10.

A valve plate 9 is arranged on an end of cylinder 7, and 11 of a cylinder head is fixed on the valve plate 9, and an inhaling silencer (not shown) is arranged on the cylinder head 11.

Particularly mode that is used to guide the circle tube member 4 usefulness press fits of lubricant oil is pressed into the lower end by the bent axle 10 of rotor 3a driven rotary, so that lubricant oil " O " suction is advanced in the bent axle 10.

An impeller 5 that is used to aspirate lubricant oil is arranged in circle tube member 4, and in the bottom of above-mentioned member 4 and the impeller 5 floodlubrication oil " O ".

The following describes the process of existing closed compressor suction lubricant oil.

At first, when the motor connecting power of closed compressor, rotor 3a begins rotation, makes member 4 and impeller 5 also along with bent axle 10 rotates together, so lubricant oil " O " is just aspirated up by centrifugal force and propelling force.

The lubricant oil that is pumped up " O " is delivered on the friction means of the top of bent axle 10 and compressor, they is lubricated, to prevent overheated and wearing and tearing.

See also Fig. 2 A-2D, describe employed various oil pumping members and impeller in the existing closed compressor below in detail.

Shown in Fig. 2 A, the diameter of the oil pumping member 4a bottom that contacts with lubricant oil " O " is less than upper part diameter, thereby limited its eddy current when rotated, when having reduced the rotation of oil pumping member and impeller because the eddy current of lubricant oil and the noise that splashes and produce.

But the oil pumping member shown in Fig. 2 A and the shaping of impeller are very difficult.

Shown in Fig. 2 B or 2C, oil pumping member among the figure and impeller have adopted the upper and lower to have the hollow cylinder 4b of same diameter, perhaps taper 4c; Perhaps, shown in Fig. 2 D, can make the triangular vane that is in the cone 4d that is connected with bent axle 10 to impeller 5d, so that the manufacturing of member.

Label 5a, 5b, 5c represent an impeller respectively.

But, can produce the eddy current and the spline of lubricant oil at the member shown in Fig. 2 B and Fig. 2 C, and reduce the efficient of supplying lubricating oil.

In addition, shown in Fig. 2 D,, cone 4d is connected with bent axle 10 because being material with one metal wire and so on, so being connected between cone 4d and the bent axle 10 is very inconvenient, and, owing to the cost of material is higher, do also uneconomical like this.In addition, when with the body of metal manufacturing oil pumping member and impeller, need to adopt the processing method of deep drawn, thereby the difficulty of processing is very big, so cost has just improved.

Summary of the invention

Therefore, one object of the present invention just provides a kind of oil pumping member of closed compressor, because it is easy to be shaped and is convenient to connection between the part, so can improve the switching performance of oil pumping member, reduce the cost of its material, and can reduce the eddy current of lubricant oil and the noise that splashes.

In order to achieve the above object, provide a kind of oil pumping member of closed compressor, it comprises: a body, this body have the top with predetermined diameter of making hollow straight cylinder, have formed connecting element in the both sides of this top one end; A bottom, the diameter of this bottom be less than upper part diameter, and the tabular blade of one or more impeller has been fixed by portion within it.The connecting element that is arranged on top comprises what both sides, a pair of end thereon formed, is the center with the axis of body, slitting open arm.

Other advantages of the present invention, purpose and characteristics will become more clear in the following description.

Description of drawings

Below, describe embodiments of the invention in detail with reference to accompanying drawing.But embodiment is just in order to illustrate the present invention, rather than restriction the present invention.In the accompanying drawing:

Fig. 1 is the vertical section figure of existing closed compressor;

Fig. 2 A-2D is the vertical section figure of the various oil pumping members of existing closed compressor;

Fig. 3 A is a vertical section figure according to the oil pumping member of closed compressor of the present invention;

Fig. 3 B is a planimetric map according to the oil pumping member of closed compressor of the present invention;

Fig. 4 be one according to the oil pumping member of closed compressor of the present invention the stereogram of attachment portion, top;

Fig. 5 A is the schematic representation according to closed compressor oil pumping member of the present invention that explanation is connected with bent axle;

Fig. 5 B is the schematic representation according to closed compressor oil pumping member of the present invention that explanation is connected with rotor.

See also accompanying drawing, describe oil pumping member below in detail according to closed compressor of the present invention.

Embodiment

Be shown in Fig. 3 A and 3B according to oil pumping member of the present invention, main body 20 can be inserted in the rotor or bent axle of closed compressor (all not shown among the figure) with press-fit manner, the diameter of the top 20a of main body 20 is greater than its underpart 20b, this bottom is cylindrical, and will immerse in the lubricant oil of oil groove.

One or more tabular blade 21 forms in the inside of bottom 20b, extends internally.

Simultaneously, as shown in Figure 4, a pair of slitting open arm 22 forms in the both sides of the top of main body 20 20a, relative to each other, and is symmetrical in the center line 23 of main body 20.This a pair of slitting open arm 22 has elasticity, can insert securely in bent axle or the rotor by means of elastic force.

Below, the process that is connected with bent axle or rotor according to oil pumping member of the present invention is described.

At first, shown in Fig. 5 A and 5B, the top 20a that a pair of slitting open arm 22 is arranged is inserted the lower end of bent axle 30 or rotor 40.

Because the slitting open arm 22 of this a pair of rubber-like is to form in the both sides of top 20a, so it is pressed in the hole of bent axle 30 or rotor 40 lower ends, just can be connected top 20a on bent axle 30 or the rotor 40 securely.Simultaneously, bottom 20b is then in the floodlubrication oil.

As mentioned above, be linearly columnar according to the bottom of the oil pumping member of closed compressor of the present invention, and its diameter is littler than top, thereby has reduced the eddy current sound and the spline of the lubricant oil that produced when the oil pumping member rotates.

In addition, the tabular blade that extends internally of aforementioned body 20 and portion's formation within it is all made of plastic, thereby makes the manufacturing of oil pumping member, still quantitatively all more favourable qualitatively.

In addition, because each side forms on the top of main body, as with the slitting open arm of the connection set of bent axle or rotor, be easy to oil pumping member and bent axle or rotor are coupled together, do not need to use the independent connector element of wire and so on, thereby reduced the cost of material.

Though described the preferred embodiments of the present invention for above, those skilled in the art can not break away from the scope that the present invention summarized in claims, make various improvement, increase or substitute.

Claims

1. the oil pumping member of a closed compressor, it comprises:

Main body top with predetermined diameter of making hollow straight cylinder has formed connection set in the both sides of this upper end, main body top;

A lower body part, this lower body part be connected hollow straight cylinder shape main body top below, its diameter is less than the main body upper part diameter; And

At least one tabular blade that forms in lower body part to its inner extension.

2. oil pumping member as claimed in claim 1 is characterized in that, the connection set that above-mentioned upper end on main body top forms comprises and a pair ofly forming in these both sides, top, is the center with its center line, slitting open arm.

3. oil pumping member as claimed in claim 1 is characterized in that, above-mentioned oil pumping member is made of plastics.