JPS59201995A - Horizontal rotary compressor - Google Patents

Abstract

PURPOSE:To achieve sufficient lubrication to the sliding section by making the inner diameter at the outlet section of an oil feed path smaller than the diameter of the axial hole of shaft thereby providing the fluid diode function. CONSTITUTION:Lubricant flowed through the outlet section 17a of an oil path 17 into the axial hole 5b of shaft 5 will rather flow through a lateral hole 5c branched from the axial hole 5b in the direction of centrifugal force than flow through the outlet section 17a of oil feed path 17 having smaller diameter than that of the axial hole 5b if the centrifugal force has applied through rotation of shaft 5 to provide the fluid diode function thus to feed more lubricant to the sliding section. Consequently the centrifugal pump function due to the rotation of shaft 5 can be utilized effectively. While since the oil feed path 17 is squeezed at the outlet section 17a of oil feed path 17, counterflow into the oil feed path 17 is reduced considerably through the liquid diode function in the suction process.

Description

DETAILED DESCRIPTION OF THE INVENTION [First Field of the Invention] The present invention relates to a horizontal rotary compressor. It is related to.

[Background of the invention]

First, a conventional horizontal rotary compressor will be explained.

FIG. 1 is a longitudinal sectional view showing an example of a conventional horizontal rotary compressor. In this FIG. 1, ■ is a case that also serves as an oil reservoir, and inside this case 1 there is a compression element 13 and a 4i14 dynamic element 16 that drives the compression element 13.
is stored.

The compression element 13 is a cylinder 3. A shaft hole 5b for introducing moisture 4'j oil to the sliding part, and a shaft hole 5b branching from the shaft hole 5b of
iiJ ; + Jun to self-sliding part? 5. A crank 5a having a horizontal hole 5C for supplying B' oil and a gas vent hole 5d for releasing gas accumulated in the shaft hole 51). Fitted into the crank 5a, /-
＼'ノl□ The roller 6 rotates eccentrically on the inside of the 7 cylinder 3 as the rotation of the 5th rotation occurs.
x shi, while the other end is pushed by spring 8 / i'i of cylinder 3
S'; (not shown) A beno 7 that reciprocates inside. A suction side fluid diode 9 is disposed on both sides of the norinda 3, and a suction side fluid diode 9 is provided on one side.
and a discharge side fluid diode 10 is provided on the other side, and each 'till receiver 2a, 4. a and draw one glossy throat 5 (11) Plate A2. Side plate B4.
, the pump chamber 11 surrounded by the side plate B 4, the back surface of the vane 7, and the vortex of the cylinder 3 is provided (iiij L).

The drive element 16 includes a stator 14 and a rotor 15, and the gloss throat 5 is fitted into the rotor 15. 12 is a feeder connecting the discharge side (smaller diameter side) of the discharge side fluid diode 10 and the bearing 4b (the bearing that pivotally supports the end where the shaft hole 5b of the shaft 5 is opened) of the side plate B4. It is an oil road.

In the horizontal rotary compressor configured in this way, when the horizontal rotary compressor is operated and the gloss throat 5 rotates,
Along with this, the roller 6 rotates, the vane 71 is pushed by the spring 8, and the vane 71 is pushed forward by ψ1°1. : moves reciprocatingly within the groove of Norinda 3 while contacting the refrigerant 1, compresses 4x of refrigerant flowing in from the refrigerant 1 suction port (not shown), and discharges the refrigerant 1:]
(not shown).

On the other hand, when the vane 7 reciprocates, the volume of the pump chamber 11 changes, performing a pumping action. J'- That is, when the volume AJt of the pump chamber 11 decreases, lubricating oil is sucked from the suction side fluid diode 9, and when the volume of the pump chamber 11 decreases, lubricating oil is transferred from the discharge side fluid diode 10 to the oil supply path. 12
Discharge to. The lubricating oil sent to the oil feed path 12 is supplied to the sliding portion from the outlet portion 12a through the shaft hole 5b and the 4X hole 5C.

The conventional horizontal rotary cavity compressor described above has an oil supply ratio of 1:9 as shown in Fig. 1 in order to greatly reduce the load when performing pumping action, that is, the pump eco-load. The flow path disconnection of channel 12 [ni product is completely increased.

In other words, the inner diameter of the outlet portion 12a of the oil feed passage 12 was larger than the diameter Do of the shaft hole 51) of the 7-piece shaft 5. Once, the reciprocating motion t/('-J
: Due to the filtration pump action, the outlet part 12X1 of the oil supply path 12
The 4゛-group 1 oil flowing into the 1lib hole 51 from /
Due to the centrifugal force caused by the rotation of keys 1 to 5, the shaft hole 5b or
Not only does the oil flow out from the nine-branched horizontal hole 5C in the direction of centrifugal force (that is, the outer diameter side of the shaft 5) and is supplied to the sliding part 71, but also the shaft hole 5b has a larger diameter oil feed path 12. noj
It also flows out to the 1 ji section 12a and is pushed back - C1 no\
The centrifugal pump action caused by the rotation of the throat 5 could not be used effectively.

One run, the volume of the pump chamber 11 increases y:+'j
In the suction stroke to suck in the lubricating oil, the lubricating oil in the case 1 is not only sucked in from the 1Δ fluid diode 9, but also the oil feed path 12 has a large cross-sectional area and low flow resistance. Since the lubricating oil in the pump chamber 11 is sucked from the discharge side fluid diode 10 into the pump chamber 11, the lubricating oil in the oil feed path 12 flows backward.

Therefore, sufficient lubricating oil could not be supplied to the sliding parts, and as a result, there was a drawback that the reliability of the horizontal rotary input pressure A (target) was reduced.

[Purpose of the invention]

An object of the present invention is to eliminate the above-described drawbacks of the prior art and to provide a highly reliable horizontal rotary compressor in which sufficient lubricating oil is supplied to the sliding parts.

[Summary of the invention]

The structure of the horizontal rotary compressor according to the present invention is that a shaft hole for guiding oil to the nozzle/glue and sliding parts is bored in a case that also serves as an oil reservoir, and a crank is provided. / Yaft,
a roller that is fitted into the crank and eccentrically rotates along the inside of the knoll as the glossy throat rotates;
The other end is pressed by a spring while the /
A vane that operates back and forth in the cylinder groove is disposed on both sides of the front foot ring, and a side plate is provided with a suction (1i1j fluid diode) on one side and a discharge side fluid diode on the other side.

It has a compression mechanism equipped with a pop-up with a gap between the rear surfaces of these two plates (iii. However, due to the pop action caused by the reciprocating movement of the vane with the rotation of the fll'lJ syringe, the 115"j slip flowing into the pump chamber via the suction side fluid diode from inside the case Pressurize the oil,
The horizontal rotor iJ is configured to forcefully feed this fluid from the discharge side fluid diode to the shaft hole of the Yant through the oil supply path.
I771, on the tri plane! 'Ijl' The inner diameter of the outlet of the oil passage of the shaft: I! ll+the diameter of the hole.

[Invention') (Example)

The present invention will be explained below with reference to Examples.

FIG. 2 is a longitudinal section (1) of a horizontal rotary compressor according to an embodiment of the present invention.

In this Fig. 2, the same parts as those in Fig. 1 (2) are denoted by the same numbers. And 17 is the outlet part 17
2" is drawn. Q' is the flange exit part 17; the inner diameter D1 of 1 is 7-\.
This is an oil passage made smaller than Do.

With this configuration,
2I to 7-・1i of foot 5 (1+hole 51) hebf
In this case, the centrifugal force is applied to the oil from the outlet 17a of the oil feed passage I7, which has an inner diameter smaller than the diameter of the shaft hole 51). The force flowing out from the 41, 7 hole 5C branching from the 11ii hole 5b in the direction of the force is much easier than flowing out into the oil feed path 17 against the (The lubricating oil will be supplied to the sliding parts, and the centrifugal pop action caused by the rotation of the shaft 5 can be effectively utilized.)

Still, pop'・: (The volume of 11 is big and 4= is moist.
In the suction stroke where 'i'i oil is sucked, backflow is likely to occur in the i:+-1 lubricating oil from the discharge side guide 10, the suction axle, and the oil feed path 17 as well. However, since the outlet section 17a of the four oil passages 17 and one oil passage 17 are narrowed,
From the outlet part 17a to the shaft hole 51) to the outlet part 17;
The flow resistance in the J force direction is such that the outlet portion 17d is r', 44
11 becomes greater than the resistance of forward flow to hole 51,
The so-called fluid guiato' function occurs, and the oil supply path 17
Internal backflow is greatly reduced. Oil feed path 17 from shaft hole 5b
Even if some backflow occurs, the inner diameter J)+ of the outlet portion 17a of the oil feed path 17 is the diameter IJ of the shaft hole 51). Since it is smaller, an oil level of 1 and the difference between the two remains on the inner surface of the shaft hole 5b, so it is possible to supply f171 lubricating oil to the sliding part from the side hole 5c.

Well, depending on the conditions, the amount of tau lubricant that can be absorbed by the pop action caused by the recovery movement of Be~77 may be small! 1t11 hole 51] may not be lubricated with oil at the shaft center 1, but in such a case, the lubricating oil in the 411 hole 51] will flow through the shaft hole due to centrifugal force. 51)
During the suction stroke [1, 5] due to the pumping action of H-77, the dregs accumulated in the core of +IQIl flow back, and the oil flows through the outlet. Due to part 17.1, there is almost no backflow due to the flow +, l = ;~51'.

FIG. 3 is a sectional view along R of a horizontal rotary compressor according to another embodiment of the present invention.

In FIG. 3, the same parts as in FIG. 1 are denoted by the same numbers. 19 is the outlet part i of the oil feed passage 18
This fluid diode 19 has a large diameter portion 19;l on the side that opens to the oil feed path 18 side, and a small diameter portion 41JIt that opens in the shaft holes 5b of the Nyanoto 5. Part 191) This small diameter part 1
The diameter D2 of the hole 9b is 11η and the diameter Do of the hole 51 is also small.

With this structure, similarly to the embodiment shown in FIG.
f411 hole 51] into fCd1'l Pi7? I
ll lrt, /-(' 71-5 times + 1 time, -1- minute (C is supplied to the sliding part by effectively utilizing the centrifugal pop action by Cζ. Agent/ko, iii I::1 Part 18.1
Since the fluid diode 19 is provided at
This has the effect of making it even smaller.

〔Effect of the invention〕

I will explain the details of this invention in this way.
: Sufficient lubricating oil is supplied to the sliding parts, making it possible to provide a highly reliable horizontal rotary compressor.

[Brief explanation of the drawings] No. 71 shows an example of a conventional type 116 rotary compressor.
(1, Fig. 2 shows the present invention) - Actual child Example K
FIG. 3 is a longitudinal cross-sectional view of part 77 of the 1-type II-crystalline rotary compressor according to another embodiment of the present invention. 1 coos, 2 side plate A, 3 crank, 4 side (j
S1;, 5./Yasoto, 5 total-・Crank, 51)・
・Shaft hole, 6-・II-shi, 7... vane, 8... spring,
9. Suction 1△ side fluid diode-1-1I O. Discharge side fluid diode, 1j. Pop chamber, 13.
]6..., drive' branch element, 17... oil feed path, 17;l
・・Out [Part 1,] 8・Oil pipe, 18a・・Out “” part,
19...Fluid diode, 921 Large diameter part, 191
]・Small diameter part. 211 Patent Attorneys Kosaku Soguchi (and 1 other person) Kaya 1 Kata 22 Kaya 3 / Go 1st page continuation 0 Author Mitsuru Murata 800 Oaza Tomita, Ohira-cho, Shimoga-gun, Tochigi Prefecture Hitachi, Ltd. Inside Tochigi factory

Claims (1)

[Claims] 1. Also serves as an oil reservoir/Inside the case,/Linda, to the sliding part! Wl /if A shaft with a whole crank, which has one hole for guiding oil, is fitted into the crank, and rotates eccentrically according to the inner law of the / cylinder as the / cylinder rotates. roller, and comes into contact with the roller 7,
Others・l; Press 1 and 1 with 1r-1 and rotate back and forth in the i'l''I of the / cylinder while l'-+-~-/',
i) A suction side fluid diode is provided on one side of the cylinder and a discharge side fluid diode is placed on the other side. A compression element having a quadruple pump chamber formed by a regulating plate, a back surface of the heel, and (11I'j) of the cylinder, and a driving element for rotating the shaft; 7 Bonbui' [
Next, pressurize the lubricant d1 oil that has flowed into the pump chamber from the case i'ji through the suction-side fluid diode, and 71 through the discharge-control discharge-side fluid diode oil passage. 1. A horizontal rotary compressor configured to force-feed oil into a shaft hole of a shaft, characterized in that an inner diameter of an outlet portion of the oil feed passage is smaller than a diameter of the shaft hole of the shaft. 2. A fluid diode is provided at the outlet of the oil passage, and the side that opens toward the oil passage side is the large diameter part, and the side that opens into the shaft hole is the small diameter part, and the diameter of the small diameter part is set to the shaft hole. A horizontal rotary compressor according to claim 1, wherein the comb has a diameter smaller than the diameter of the hole.