JPS5963392A - 2 rotor type variable capacity rotary vane compressor and method for varying its capacity - Google Patents

Abstract

PURPOSE:To facilitate positive operation of a compressor by reducing the necessary clutch capacity such that a sub-clutch receives only static load when it is put into engagement. CONSTITUTION:When a coil 44 is energized, it attracts a pressure plate 41 to press a drive plate 42 and a driven plate 43 between said plate 41 and a clutch plate 39 so that a subclutch 26 is put into the engaging condition. At the same time, by the energization of a coil 46 is also put into the engaging condition a main clutch 25 with some delay after the engagement of the subclutch 26. Thus, rotary power from a pulley 24 is transmitted through the main clutch 25 to a compressor 10 and then through the subclutch 26 to a compressor 11 to drive both compressors 10, 11 so that total capacities of the compressors can be varied to the sum value of these capacities.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention comprises two rotary vane compressors coaxially, one of which can be drivingly coupled to a power source via a main clutch, and the other rotary vane compressor connected to one of the rotary vane compressors via a sub clutch. This invention relates to a 20-type variable rotary vane compressor that can be drive-coupled to a compressor. With this type of compressor tool, the cultivation can be changed by selectively or simultaneously driving both rotary vane compressors by engaging and disengaging the main clutch and sub clutch.

By the way, as shown in Fig. 1, a conventional rotary vane compressor is equipped with a rotor 2 eccentrically rotatable in a cylindrical housing, and a plurality of blades are installed over the entire length of the core rotor. The pump chamber 4f is set between the adjacent vanes 3 by sliding the 173 in the radial direction so that r=J is inserted. These pump chambers 4 suck working fluid from the suction boat 5 while the rotor 2 rotates in the direction of the arrow HIJ and the volume increases, and the volume decreases [IJ1 discharges this working fluid from the discharge boat 6].

Then, this is designated as an iiJ Henyasu type rotary vane compressor. A bypass passage 8 is provided between the boat 7 and the suction boat 5 that communicate with the pump 4 during capacity increase, and the flow path cross-sectional area is changed to the magnetic valve 9. It constitutes a hollow type rotary vane compressor.

However, in a variable displacement M type rotary compressor with such a structure,
8, a pocket volume is generated, which inevitably causes problems such as lowering the efficiency of the compressor and increasing the temperature of the working fluid.

Therefore, the applicant of the present application has previously proposed, in Japanese Patent Application No. 57-29234, a 20-taper type variable compressor equipped with two rotary vane compressors coaxially and capable of changing the capacity by driving them selectively or simultaneously. We proposed a Wit type rotary hone compressor. As shown in FIGS. 2 and 3, this type of compressor is equipped with two rotary vane compressors 10 and 11 coaxially similar to those shown in FIG. It has a working fluid suction chamber] 2 and a working fluid discharge chamber] 8. The suction boats 14 and 15 of the compressors 10 and 11 are opened in the chamber 12, and working fluid supply holes J6 are opened as shown in FIG.
While opening the discharge boats 17 and 18 of 0 and 11,
Working fluid take-off holes 1) are fully opened and provided respectively, and a backflow prevention plate valve 20 (21) is installed in the discharge bow 1-7 (18).
Set up opposite.

The drive shaft 22 of the compressor 10 is made hollow, and the drive shaft 23 of the compressor 11 is inserted through it for relative rotation -oJ. The V-belt pulley 24, which is rotated by a drive source, can be appropriately connected to the drive shaft 22 by a lock main clutch 25, and the drive shaft 23 can be connected to the drive shaft 22 by a sub clutch 26, as appropriate.

In this configuration V, when both clutches 25, 26 are pressed, the rotational power of the pulley 24 is not transmitted to either rotary vane compressor 10, 11, and the overall capacity of the compressor is zero. When the main clutch 25 is engaged, the rotation bar of the pulley 24! The υ force is transferred to the rotary vane compressor 1 via the clutch and +1122i.
0, which is the driving force and moves boat 14 from chamber 12.
In order to discharge the working fluid from the boat 17 into the chamber 13 through the suction (7), the entire valley t6 of the compressor corresponds to W and kTAVC of the rotary vane compressor 10. 26, the rotational power transmitted from the pulley 24 to the drive shaft 22 of the compressor JO via the main clutch 25 is transmitted to the drive shaft 2svc% via the sub clutch 26.
The rotary vane compressor 11 is also driven. This compressor] ] Since the working fluid sucked in from the motor m12 via the boat 15 is discharged from the boat 18 into the chamber 13, the overall capacity of the compressor corresponds to the total capacity of both rotary vane compressors 10, , II. Gakute,
By controlling the engagement and disengagement of the main clutch 25 and the sub clutch 26, both rotary vane compressors 10゜1] can be operated selectively or simultaneously to change the oJ shape.
One type oJ fW ltt type rotary vane compressor is obtained.

The applicant of the present application further filed the same patent application No. 57-29234 as above.
In the same issue, we also proposed a 20-meter rotary vane compressor as shown in Figure 4.

This Kongreza T user clutch 26 is placed on the opposite side from the main clutch 25, but no matter which side the clutches 25, 26 are placed on, it is still the same as the previous proposal in which both clutches 25, 26 are placed on the outside. It cannot be denied that the variable capacity rotary vane combustor has the disadvantage that its external dimensions are too small.

The present invention is a 20-meter variable W jif type rotary lever.
In the case of a compressor compressor, in order to make this iL compact, the working fluid chamber is common to two rotary vane compressors (1+ arrangement), and it is common sense to set it between them. From this working fluid chamber [-?Pig latch storage E-20 one type 'J' with reduced external dimensions
It is intended to provide a modified 'f4 It, nQ rotary vane congressor.

Note that when the Sub clutch is housed in the working fluid chamber in this manner, the clutch capacity of the Sub clutch cannot be increased because the storage space is limited. On the other hand, when one rotary vane compressor is activated by engaging the main clutch,
i: Jf) Desiring Thickness - When switching to a state in which the other rotary vane compressor is also operated by engagement of the leave clutch, the sub clutch is constantly subjected to dynamic loads and requires a large latch capacity. Does the compressor of the invention described above have a one-rib clutch? It is inevitable that the amount will be insufficient.

Therefore, the present invention reduces the required clutch capacity -M- by making the sub clutch receive only the static load IW when engaged.
It is an object of the present invention to provide a method for changing the valley width of the 20-hole type J modified Id type rotary vane compressor, which can solve the above-mentioned problems.

The present invention will now be described in detail with reference to illustrated embodiments.

':i'+ Figures 5 and 1 show an actual example of the compressor of the present invention, and in these figures, parts that function in the same way as in Figures 2 to 4 are designated by the same reference numerals.

Rotary vane compressor 10, 11! -, le et al.
Compress gloss housing 27.28 and both flll+
A rotor 2 and vanes 3 similar to those shown in FIG. 1 are housed in a space surrounded by side plates 29 to 82 in
0. The drive shafts 22 and 28' of the rotor 2 (rotor 2) are rotatably supported by the corresponding side plates 29 to 32 at the same Nl+. Note that the suction ports 14, 15, the discharge boat 17.
18 and check valves 20.21 are respectively connected to the side plate 14.
15.

A center housing 33 is sandwiched between the side plates 14 and 15, and a working fluid suction chamber 12 and a working fluid discharge chamber 3 partitioned by a partition wall 34 are set inside the center housing 33, and an opening is provided in each of these chambers. The above-mentioned working fluid supply hole 16Nl is made!
A IIIJ fluid outlet hole 19 is formed in the center housing;

Death of non-invention 1;1. + drive 7IJsu11122.2
．． A complete set of 26 clutches that drive and connect the three parts as appropriate.
'li'J1 fluid discharge chamber 1'3 is installed. This room]
Leaf clutch 2 is completely filled with working fluid.
6 as a wet multi-disc clutch, 17'j l1lj,
For this purpose, the drive part is 85φ in 1lIllll 22.
・Bolt connection (shown in 8 -i-) -r and shaft 23
Connect driven part 4 (X (7) with bolts (indicated by 38) to
Drive, 1liD part i;
The clutch drum 40 is integrally molded. Then, flag board X (placed on 9 and 1111)
J! 7/ Drive plates 4, 2 and 0 splined to the moving part phase 36, and driven plates 4, 3 splined to the clutch tram 4o are arranged alternately.

These drive grades 42 and driven grades 43
Clutch plate farthest from: Coil 44 is placed on the side of 39 (2
, this is arranged coaxially with the driven part 35 and the side grate 3
Take 0 and subtract 1.

The main clutch 25 is the same as that shown in Fig. 4, but with some additional explanation, ■Belt pulley 24
is rotatably supported by a bearing 45 on a side plate 29'', and a coil 4 is mounted on this side plate 29 on a 1y side.
6 is attached and coaxially faces one side of the pulley 24. An armature 48 in which a permanent magnet 47 is embedded is arranged on the other side of the pulley 24, and this coil spring 4
- At the same time, the other end of the coil spring is connected to the shaft 22 via the coupling member 50 [7].

In the present invention, a 20-tar type modification W of the above structure bk is further provided.
A 'iij,' type rotary vane compressor is controlled by the circuit shown in Figure 7. In this figure, numeral 51 is a changeover switch that allows either manual or self-operated 1υ operation, and the movable contacts 5], a' (5 fixed contacts 5), b to 51d shall be selectively matched.
At the same time, connect the fixed contact 5 ] 0 and Find to the relay coils 52 and 5, respectively.
;('Ground via IO.

Among the normally open contacts 52a and 53a, which are closed when the relay coils 52 and 53 are energized, the contact 53a has one end connected to the VC (-1111) and the other end connected to the AiJ coil 4, 4, and delay. Ground via the parallel circuit of the relay coil 54.
[Connect in two rows. All power supply at one end of contacts 52a and 54a■
One end is connected to the other end and grounded through the gold-plated coil 46.

The operation of the 20-meter type variable capacity 9 type rotary vane conflator of the present invention, which has a dual configuration, will be explained below.

In FIG. 7, FiJ' moving contact 5 of the changeover switch 51
When 1a is in contact with fixed contact 5l bVC, the relay coils 52 and 581rl are not energized, and the normally open contact 5: (a does not close, so the relay coil 5
4 is of course not energized. Therefore, normally open contact 52a.

r+8a and 54a all remain open, and coil 4
4.46 are not energized, and both the main clutch 25 and the sub-clutch 26, which are engaged by the energization of these coils, maintain a disconnected state. Therefore, since the rotational power to the pulley 24 is not transmitted to the shaft 22, and of course not to the 1lib 23, both Congrezza Jo.

] J is not driven and the entire W sleeve of the compressor is zero.

Here, when the changeover switch 51 is switched to the 10-pin drive position (791) where the contact 5Ja is in contact with the fixed contact 5IC (1'a), the relay coil 52 is energized to close the contact 52a and the coil 46 energize. As a result, the coil 46
The armature 48 is attracted to the pulley 24 and the entire armature 48 is rotated by the pulley 24. This rotation causes the coil spring 49 to contract the diameter while winding up the shaft L, so that the coil spring 49 drives and connects the shaft 22 to the pulley 24 . Thus, the main clutch 25 is engaged 7 and transmits the rotational power from the pulley 24 to the shaft 22.
The compressor JO is driven, but in order to maintain the released state of the zipper latch 26, the compressor 11-! The compressor is not driven, and the overall shape of the compressor is controlled to a value corresponding to 'f+kz of the compressor JO.

Next, the changeover switch 51 is connected to the movable contact 51a and the fixed contact 5.
] When the 20-taperature wheel in contact with d is switched to the V position, the relay coil 52 is deenergized and returns the contact 52a to the fully open position, while the IJ l/- coil 53 is energized and the contact 53a'
lClose. At this time, the coil 46 is deenergized by opening the contact point 52a as described in 1-1, and the main clutch 25 is once released.

On the other hand, as described above, when the contact 58a closes, the coils 4 are energized, and at the same time, the Tilley relay coil 54 is also energized. The coil 44 also attracts the pressure plate 4]'iz due to the force of the coughing force τj, and the drive plate 4.2 and the driven plates 4 and 3 are compressed between this and the clutch plate 31+. A joint state is established so that the shafts 22 and 23 are driven and coupled between the two shafts 36 and 37. At the same time, the contact 5Φa is closed after a predetermined time by the energization of the delay relay coil 54, so that the coil 46 is closed. Since the main clutch 25 is also driven by the sub-clutch z
The joints are joined with a slight delay from the joint in step 6. In this way, the rotational power from the pulley 24 is transferred to the compressor 10 via the main clutch 25 and the 1-IJ clutch 2a.
via fcombretsuza]] vC reached, both combotsuza 10. ]] is driven, it is possible to change the overall contact value of the compressor to these values.

Thus, the present C-Mei 20-type rotary vane compressor, as described above, has an integral working fluid chamber 153 between the two rotary vane compressors 10 and 11. Store the Zab clutch 26 (1.
7, the chamber 13 can also be used as a subclutch storage chamber, eliminating the need to extend the subclutch 26 to the outside and making the valve structure compact. The arrangement of the zip latch 26 of the present invention can be achieved by simply aligning the drive shafts 22 and 23 of the 0° 1J drive shafts 22 and 23 of the present invention as shown in FIG.
There is also the additional advantage that there is no need to loosely insert J2 into each other as in the case of 114-shaft construction, and that there is no need for several rotations (°1) for old slippage between these shafts, making lubrication easier.

Su(-ni-hi'bo)(7buko-like, main clutch 25'
10-ta 77. (From the moving state, the rib clutch 26
The compressor gloss 11 is also driven by connecting the IJ-ru 20.
When changing the speed, the main clutch 25 is released - 11, and the sub clutch z6 is re-engaged with the main clutch 25ff. According to the method J-1 (modified outside the present invention), when the Clap 26 is connected, the QQl+ 22 and 23 that should be connected to the 1st drive will always stop rotating (7 being VC). , Nabukujitsuchi 2
6 does not receive the dynamic load pawl and can withstand the static load 1 (i. According to the method of changing the container of the present invention, even if the clutch silkworm is not large and the shoes are not large, there will be no shortage of ¥-fli in the sub-clutch 26.
Sub clutch 26 burns out (during t < etc.)
do.

[Brief explanation of the drawing]

21) Figure 1 is a cross-sectional view of a rotor-type variable wheel type rotary vane combiner, and Figure 2 is a cross-sectional view of a rotor-type variable wheel vane combiner.
Transformation) i'''' [Longitudinal side view of rotary vane compressor, Figure 3 is a cross-sectional view of the 2nd south T'' figure, Figure 4 is the 201 type ``J'' A previously proposed by the applicant.
l Valley hiJ ~ 110-Tully Vane Combretuza's song 1j ~ Vertical side view showing example gold, Figure 5 &, J ear, Longitudinal side view showing the 201 type river transformation 111 type rotary vane compressor of the invention , Figure 6 &:
3, 5th v, l tZ) VI Yl 'Mr 1
-ft1 figure, Figure 7 1t:l: for carrying out the method of the present invention) 1
1 is an electrical circuit diagram showing a Nena h1 change circuit of a compressor according to the present invention. 2... Rotor, 3 - Vane, 10.11 - Rotary vane compressor, 12 - Working fluid suction chamber, 18
... Working fluid suction chamber, 34, 15. Working fluid suction port, 16. Working fluid supply hole, 17.18. Working fluid discharge boat, eyelet; f[! +Fluid outlet hole, 2 +
1, 21...Check valve, 22.23...Compressure drive! lIl+1Q11.24...V belt pulley, 2
5...Main clutch, 26...Subukurasochi, 2
7.28...Complete gloss housing, 2! J~32・
・Zuid Plate, 33...Nantanou Uzing, 3
4... Bulkhead, ;35...j! l＜ jlIII Bu Kiri,
;3F...driven part (,1,39...clutch plate,4.
0...Clutch tram, 7I+1...Bretsunyagrate, 42. Trifle plate, 4.3...Driven plate, 44, 46. Coil, 47.. Permanent magnet, l.48... Armature]゛, 4!1... Coil spring, 50... Coupling part 44. 5
1...cut 191! Switch, -152a to 54a...
・Normally open relay contact. No. (;DI No. 71'i'1

Claims (1)

[Claims] L Two rotary vane compressors t Same 1llK
The rotary vane compressor on the one side is connected to the power source through the main clutch, and the one rotary vane compressor is connected to the other rotary vane compressor via a full-rib clutch. A trll working fluid chamber is provided between both rotary pane compressors so that the rotary pane compressor can be connected to the rotary pane compressor. The above-mentioned work Mlυ is housed in the fluid chamber.
K W tri type rotary pan combiner. & Of the two rotary vane compressors arranged coaxially, one is drive-coupled to the power source via a main clutch, and the other is connected via a subclutch housed in a common working fluid chamber between both rotary vane compressors. 20-1 variable capacity rotary vane compressor, characterized in that, when drivingly coupled to the one rotary vane compressor, the sub-clutch is coupled with the main clutch released, and then the main clutch is coupled. How to change the contents of Retsuza.