JPS59196991A - Control device for volumes of liquid and gas of vane type rotary compressor - Google Patents

Abstract

PURPOSE:To restrict the mixing power of the liquid at minimum and prevent liquid lock by a method wherein a communicating groove, communicated with a suction chamber, is opened in a compression chamber and the groove is provided on a rotatable end plate. CONSTITUTION:The end plate 18 is provided with the communicating groove 23, opened in the compression chamber 9, and the communicating groove 24, opened in the suction chamber 11, in the same opening angle as the suction port 12 of a cylinder 2. The end plate 18 is provided with a meshing gear 27 on the outer periphery thereof so as to be meshed with a pinion 28 and the pinion 28 is given rotation through a shaft 29. In case the volumetric change of the gas is necessary, a delivery pressure, gas temperature or the like are detected, the detected values are converted electrically into a hydraulic pressure, pneumatic pressure or the like, a motor, a hydraulic pressure regulator or the like are operated, the shaft 29 is rotated to rotate the pinion 28, the end plate 18 is pivoted and the volume of the gas is changed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid volume and gas volume control device for a vane type rotary compressor.

Various types of devices have been proposed and used to control the capacity of compressed gas. The Jft-control device currently used mainly for air compressors and refrigerator compressors is the reciprocating! In this case, the valves of each cylinder are opened one after another to control the capacity in stages, and the slide valve is moved.
There are devices that change the suction cut-off position, increase or decrease the suction volume of the compression chamber, and change the discharge volume of compressed gas.

Control of the compressed gas container in a reciprocating type is carried out by stopping the pressure 1 action of each cylinder one after another, so the pressure shoe (the gas capacity changes step by step, and the detailed 11^J section can be safely controlled) It is not used for

In addition, the slide valve type capacity control device used in screw type rotary compressors can change the suction cut-off position using a slide valve, continuously change the actual volume of the compression chamber, and change the discharge volume tii-. can.

However, since this valley meter control device has a crude structure and the slide valve moves and slides in contact with the rotating body, it requires even greater precision, and only one original song was written. smooth,
This will increase the cause of failure.

The present invention uses a commonly used vane type rotary compressor, which is the simplest and cheapest, to control the gas capacity using a simple mechanism that does not require much compression, and to control the capacity of the compressed gas. In conjunction with the means of performing fiiJ, compression γ
1 inside! ? Irradiated cooling,? By automatically and steplessly controlling the supply amount of liquid for lV6 sliding and thickening, the stirring power of /(,; This effectively reduces operating power and prevents liquid lock.
The purpose of this is to prevent damage to the i1 body rotor locking base.

The iFM feature of the present invention is that, in a vane-type rotary compressor, an end plate that can freely rotate i (υ) is provided at both ends or one end in the axial direction of the rotor, and in the end plate, in addition to the intake port provided on the inner surface of the cylinder,
A communication groove is provided in the compression chamber surrounded by the adjacent vanes, the inner surface of the cylinder, the outer periphery of the rotor, and the end plate, and the communication groove is passed through the intake chamber, so that the continuous connection l'1 during valley IT control is established.
The communication groove is opened in the compression chamber whose volume is reduced until it communicates with the discharge port 10 after the intake (blocks communication with the intake port) within the range where /+ does not directly communicate with the discharge port via the compression chamber. As shown in FIG. This is because it is installed inside.

To explain the device of the present invention with reference to the drawings, 2N: In Figs. 1, 2, and 6, a cylindrical cylinder 10 has a cylindrical inner surface 20 with a bearing 16. The rotor 5 is equipped with a rotor 5 which rotates in the direction of the arrow through a rotor 17, and a vane 7 which is fitted into a double vane 6 provided on the rotor 5 and moves 1j9. End plates 18 and 19 are provided which are rotatable about the center 4 of the rotor 5, and the ends and 18 and 19 are fixed to both ends of the cylinder 1 with a casing 20 and 21 that accommodates bearings 16 and 17.

By connecting the lt+ end 22 of the rotor 5 with an example of a driving force such as an electric motor or an internal engine (also shown in the figure), the inner surface of the cylinder 2 The volume of the compression chamber 9 formed by the vane 7, rotor outer periphery 8, and end plates 1B and 19 is reduced as the rotation progresses, and gas is sucked in, compressed, and discharged.

tl+i on the outer circumference of cylinder 1! K An intake chamber 11 having an opening 10 is provided on the outer periphery of the cylinder inner surface 2 forming the pressure chamber 9 of the cylinder 1. An intake port 12 is provided at the upper part of the cylinder inner surface 2, and the rotor outer periphery 8 and the cylinder inner surface 2 are provided with an intake chamber 11 having an opening 10. A discharge port 13 is provided in the smallest section of the compression chamber 9 where the compressed gas approaches the compressed gas, and the compressed gas is sent to the discharge chamber 14 as the rotor 5 rotates, and is further discharged from the communication port 15 to a pressure tank (not shown) or the like. .

The end plates 18 and 19 have communication grooves 26 that open to the compression chamber 9.
A communication groove 24 opening into the intake chamber 11 is provided, and the entangled vortices 23 and 24 correspond to the compression chambers 9 of the end plates 18 and 19 as shown in FIGS. 1, 2, and 6. On the circumference corresponding to the intake chamber 11 and on the circumference corresponding to the intake chamber 11, the intake ports 12 and p+;-3 provided on the cylinder inner surface 2 are provided at positions having the same opening angle.

A communication passage 25.26 is provided in the casing 20.21 at a position corresponding to the intake chamber 11 of the cylinder 1, and the communication passage 25.26 is always connected to #23.24.

Engaging teeth 27 are provided on the outer periphery of the end plates 18 and 19 in accordance with the rotation angle, and engage with the binion 28.
The rotation is applied via a motor or a hydraulic regulator (neither is shown). When it is necessary to change the capacity of the equipment, the change in discharge pressure or discharge gas temperature is detected, and this is converted into electrical, hydraulic, pneumatic, etc., and a motor or hydraulic regulator is used. etc., rotates the pinion 28 via the ti 1129, rotationally displaces the end plates 18 and 19, thereby changing the gas trough force] knee.

In this embodiment, a method is illustrated in which the end plates 18 and 19 are rotated by gears, but the end plates 18 and 19 are rotated by gears. The method of rotating I9 all the way is not limited to this embodiment, and includes all other methods of rotating the bone using a lever.

Mmm: Figure 1! Akira 4 anti 18.19)! Tribe 6 et al 26
．． 24 is located at the same angular position as the intake port 12 on the inner surface of the cylinder 2, and shows the state of normal compression (all members) operation, which is exactly the same as the operation of the conventionally known vane type rotary pressure engine. That is, in this state 12, 4-j, the vane 7a is connected to the intake port 12.
The vane 7C is located in the discharge pipe of the discharge port 16, and the gas in the compression chamber 9 is increased in volume by the rotation of the rotor 5 (-...) until the pressure reaches the compression chambers 9a and 9b. Glaze;・
・It is discharged from the discharge port 16. In Figure 2, it is necessary to control the gas capacity, and the end plates 18 and 19 are approximately 90' to the right.
The figure shows when it is rotated.

In this case, the :+71j connection υ11.2 of the end plate 18.19.
3.24 is located at the pressure is6 chamber 9, 9a.
9a is Kamisaku, groove 24. The contact passages 2b and 26 (Fig. 6) are connected to the intake chamber 11 by connecting the passages 6) and 26 to the intake chamber 11, and the gas in the compression chambers 9 and 9a is heated by pressure as the volume of the chamber decreases. It is returned to the intake chamber 11 and is not compressed.

1JIi person deadline is first performed by vane 7b,
The suction gas capacity is a response to the compression chamber 9b, and the compressed gas capacity is controlled.

As described above, while rotating the rotation angle of the end plates 18 and 19 from 00 to It is also possible to save a lot of money, which is very effective.

The explanation for this trench is that both end plates 18 and 19 have connecting grooves 25.
24, but the end plate 18.
Even if the connecting grooves 26 and 24 are provided only on one side of No. 19 (J), the same operation will be achieved and the same effect will be achieved, which is still included in the gist of the present invention.

Conventionally, stepless waste notification for vane type rotary compressors: 1lj
Since lJ control is a so-called intake opening type capacity control in which the intake ports are sequentially closed and closed, the negative pressure on the suction side of the compression chamber increases as the intake gas decreases, so the pressure i ratio increases depending on the intake gas capacity. , and even if the valley rate control 4iil was performed, the power consumption decreased significantly, but according to the device of the present invention, the pressure +f'... 7jΔ・, depending on the amount of gas Since power consumption is greatly reduced by adjusting the rotation angle of the end plate, the capacity of the compressed gas is controlled in stages by adjusting the rotation angle of the end plate. It can be done cheaply and efficiently.

In FIG. 6, the cylinder 20 has a communication passage 25.
26 is provided / Komono is shown in the diagram, but the communication passage 25.26
The same effect can be obtained even if the V; Not even a legitimate one.

As shown in Figure 2 and Figure 4, a liquid amount +a control device 61 is provided at the opposite shaft end 60 of the binion 28 as described below.

A male thread 62 is provided on the shaft 30 of the binion 28, a ? The valve 66 is housed in the body 64 so as to fit 11β to the left and right in Figure 1.4, and the body 64 is fixed to the casing 21.
4 and 1y of liquid connected to the suction thread path of the compressor, respectively.
A λ inlet 65 and a discharge port 66 are provided, and a communication outlet 37, which communicates with the suction port 35 and the discharge port 66, respectively, is provided on the inner surface of the body 64.
38 is provided so that the movement of the 91Ia surface 69 of the valve 66 controls the flow of the liquid.

As shown in FIG. 2, in a state where the communication heights f23 and 24 of the end plate 18 are rotated to the right by fJqo° and the compressed gas trough 11 is at its minimum, the quantity control valve ': je,
Adjust the screw so that the bulb 66 of ', ', 31 is located at the farthest left position as shown in FIG.
38'rj+10 planes are restricted, and the flow of liquid - stone' is restricted to a safe minimum.

The liquid outlet 66 is provided via a supply pump (not shown).
It communicates with the 114.1 injection port 46 of the cylinder 1 through the pipe line 42 shown in Figs. Performs lubrication and secret action.

$'1.2 9j from the minimum total operation state shown in i7i
In order to return to the operating state, the pinion 28 is activated via the shaft 29 by a morph (shown in the figure) that operates by sensing the discharge pressure, discharge gas temperature, etc. Rotate the yHA plate 18.19 to the 112th:i
Repeat until 1d.

Due to the recirculation of the binion 28, the 4 sacrum end 160 J threads 6
When 2 rotates, the screw moves Baken Pro 6 to the right, and! Communication groove 37 narrowed by IW portion 69
．． 38 is opened as shown in FIG. 6, allowing the compressor to be injected with the entire amount of necessary cooling, ff, lubricating, and sealing liquid during full load operation.

In this way, by providing the liquid i1i41J control 61 in conjunction with the rotation of the end plate which controls the answer t-,
By adapting to changes in the volume of compressed gas, the minimum amount of liquid can always be injected into the compression chamber, reducing the power even further, especially during volume control. This has the effect of preventing liquid lock and vane damage.

Above 7q, the known practical stepless gas capacity control '1ill device 1 is screw 21□1 (sliding pulp bar in the rotation compressor, but its divine 42.The mechanism is a reproduction and the original song is expensive, which is disadvantageous from the user's point of view.According to the present invention, the i1 is produced using a low-cost vane-type rotary rotary machine.
It is also possible to achieve the low-pressure gas volume 111 and the quantity control with an easy and simple construction.

[Brief explanation of drawings]

FIG. 1 shows an embodiment of the present invention, in which the communication groove of the end plate is
FIG. 3 is a cross-sectional view of a vane-type recirculating compressor in a state where it performs an If compression operation. Figure 2 shows an illustration of a vane-type 9-bar compressor showing an example of control of the end plate operation, suction recitation, and cutting position adjusted. '15 Run 1 (J
J-side view. Figure 6 is a vertical cross-sectional view showing the bend in 1-1 of Figure 1. Figure 4 shows the liquid volume!
It is an enlarged sectional view showing a state in which l (9, 1) is squeezed. 1... Cylinder. 5... Rotor. 7... Vane 9◆... Pressure & Fi chamber. 11... Intake chamber. 18 .19... End plate. 26.24... Communication groove. 28... Binion. 61... Molding control device. Ba?,
,,, +41 sword 19 595-

Claims (1)

[Claims] In a rotating press machine, a rotary end plate is provided at both ends or one end in the axial direction of the rotor, and in addition to the intake port provided in the cylinder mi, the end plate is provided with an adjacent vane and an inner surface of the cylinder. , four-fold pressure at the rotor outer circumference and end plate.
Provide a communication groove #f that opens into the recessed chamber, pass the communication groove into the intake chamber, and at the time of maximum control of the intake, the communication front advances to the discharge port via the compression chamber within a range, After cutting off the communication with the intake port, turn the yiJ plate with the rotation pattern of 1" so that the communication groove is connected to the compression chamber that reduces the answer Bt until it communicates with the discharge port. The device is equipped with a moving device, and a linear control device that increases or decreases the liquid passage area in conjunction with the rotation of the end plate is installed in the liquid jet path of the machine. A vane type rotary pressure lung liquid and gas volume control device.