JPS5830498A - Rotary compressor - Google Patents

Abstract

PURPOSE:To make a compressor small-sized and lightweight by fitting a solenoid below a cylinder, utilizing the oil sump space at the bottom of the chamber, and making the space in the radial direction unnecessary which has been so far required to fit the solenoid. CONSTITUTION:A solenoid 9A is fixed to a solenoid fitting stand fitted below a cylinder 1 with a frame 10A section so that a pin 15 slides through a pin guide hole 32 and a movable iron core 13 moves in the axial direction. By fitting the solenoid 9A below the cylinder 1, the space where the refrigerator oil 33 is stored at the bottom of a chamber 25A can be utilized, and the space in the radial direction which has been so far required to fit the solenoid 9A is made unnecessary. Therefore, the diameter and thickness of the chamber 25A can be made small, thus the compressor 27A can be made small-sized and lightweight.

Description

[Detailed description of the invention] The present invention relates to a rotary compressor! Small size for 1 yen.

This invention relates to a rotary compressor that implements i and lt control using vane control and is aimed at reducing weight.

Rotary pressure an+a has been widely used as a refrigerant compressor in refrigeration cycles, such as air conditioners, but recently there has been a strong demand for low annual power consumption of air conditioners. It's starting to happen.

In order to meet this requirement, a method has been implemented in which the capacity of a rotary compressor is controlled according to the electric charge to save energy.

Conventionally, a method for controlling vanes has been proposed as a method for controlling rotary compressors.

Figure 1 is for explaining a conventional rotary compressor response control method using vane control, and Figure 1 (a) shows the state in which the holding operation of the vane is released. FIG. 1(b) is a sectional view of the main part showing a state in which the vane is held.

In FIG. 1, 1 is a cylinder of a rotary compressor 27, 3 is a roller that rotates inside the cylinder 1, 4 is a crank that is provided on a shaft (not shown) and rotates the roller 3, and 2 is a crank that rotates the roller 3. , the inside of cylinder 1 is connected to high pressure side 23 and low pressure side
It is a vane that is partitioned into tl 24 and slides in the vertical direction while contacting the roller 3, and an ω 26 is provided on the side surface of this vane 2. 5 is a vane spring that applies a chipping load to the upper end of the vane 2 and presses the vane 2 against the roller 3; 8 is a suction port provided in the cylinder 1; and 7 is a discharge valve provided in the discharge port 6 of the cylinder 1. , 9 energizes its coil 11 to 1. A solenoid 25 (described in detail later) that can hold the vane 2 by moving the iT moving iron core 13 is a chamber that houses a rotary compressor 27.

16 is a power source that energizes the coil 11 of the solenoid 9 and controls the movement of the nJ moving iron core 13; this power source 16 includes a rectifier circuit 17 that supplies direct current to the coil 11;
Indoor 61 crystal j setter 1 s, ′, = f1゛1 in a
^M is detected from the absorption detector 19 and the outdoor temperature detector 20 (+
The capacity to calculate the trough amount control d11 rate for J bow.
I obtained by the same ratio calculation and the rectifier circuit 17
A switching circuit 22 is configured to apply a pulse to the coil 11 of the solenoid 9 in accordance with the total G flow 1 section pressure r+ilg self-capacitance suppression rate.

Regarding the details of the solenoid 9 mentioned above, iS? To be clear, 10 is the frame of the solenoid 9, 11 is housed in the frame 10, and its image! 1? Coil A is connected to the switching circuit 22 of the power supply 16 with I & Mr 8, 1
2 is a fixed iron core, 13 is a movable iron core with a pin 15 attached to its tip, and 14 is a spring inserted between the frame 10 and a spring seat 13a provided on the movable iron core 13. It is.

In the conventional rotary compressor configured as described above, during compression operation, as shown in FIG. 1(a),
The vane 2 is pushed by a vane spring 5 so as to come into contact with the roller 3, and the inside of the cylinder 1 is partitioned into a pressure side 23 and a low pressure side 24. When the crank 4 rotates in the direction of the arrow, the vane 2 becomes able to slide up and down, and the volume of the low pressure side 24 increases.
Inhale all the gas from the suction port 8. On the other hand, the volume of the high pressure side 23 decreases as the crank 4 rotates: the gas therein is compressed, and when the pressure exceeds the pressure in the chamber 25, it passes through the discharge port 6 and pushes up the discharge valve 7 into the chamber 25. leak.

During capacity control operation, the vane 2 is held as shown in FIG. 1(b).

The method for holding the vane 2 is that when the coil 11 of the solenoid 9 is energized (the energization method related to the capacity control method 7141 will be described later), the movable iron core 13 is attracted to the fixed iron core 12, and as shown in FIG. ) moves leftward to the state shown in FIG. 1(b), where the bottle 15 attached to the tip of the p1 movable iron core 13 enters the groove 26 of the vane 2. bottle 15
When the vane 2 enters #26, even if the vane 2 is pushed by the vane spring 5, it will not return downward, and the inside of the cylinder 1 will not be partitioned by the vane 2, so even if the roller There will be no change in volume and no compression will occur.

The entire method of stirring amount control side 1 will be explained using Figure 2.3.

Figure 2 shows the solenoid ili! in Figure 1. I l
Figure 3 shows the movement of the movable iron core as it passes through the solenoid in Figure 1, and the 1"t' of the bottle, vane, and vane.
FIG. 3 is a sectional view of main parts showing a given positional relationship.

First, the capacity control rate is calculated by the valley plan control rate threshold circuit 21 based on the indoor (m I construction configurator 18, indoor LA+' signal obtained from the degree transducer 19 and the outdoor temperature detector 20). .When the Ii + IJ 1+1 ratio is α, the switching circuit 22 is dpθit: lL
! As shown in Fig. 2, the total DC' direct pressure obtained from the 17, α=T I/ (T + 10τ,), T1: non-compression period τ,: compression period relationship. This pulsed voltage is applied to the coils 11 of all solenoids 9.

By the way, pin 15. Vane 2r (positional relationship of 426-
: It looks like this:

In other words, even when the vane 2 is at the lowest position, the pin 15 remains in a position where it can abut against the vane 2, as shown in FIG. When the upper end of the groove 26 reaches the position shown in FIG. 3(C),
The tip of the pin 15 is about 1 u above the upper end. At this time, the lower end of the groove 26 is located below the lower end of the tip of the pin 15 by ε2.

Here, when the full voltage is applied to the coil 11 of the solenoid 9 at an arbitrary time, the solenoid 90 move iron core 13 moves to the left as shown in FIG.
5 comes into contact with the vane 2. When the roller 3 rotates further and reaches the top dead center (point P in FIG. 3(a)), the vane 2 is lifted by the roller 3, and the tip of the pin 15 fits into the groove 26 of the vane 2. Furthermore, roller 3 rotates,
When the vane 2 reaches the position shown in FIG. 3(d), since the vane 2 is held by the pin 5, the inside of the cylinder 1 is not partitioned by the vane 2, and no compression action is performed.

On the other hand, the electric current to the coil 11 of the solenoid 9 is
2, the pin 15 moves to the right, the vane 72 is released from its holding state, and the vane spring 5
It is pushed by the roller 3, and the compression operation becomes possible.

As described above, by applying the pulsed voltage shown in FIG. 2 to all solenoids 9, the pressure is reduced.

By repeating the non-compressing operation, the capacity of the rotary compressor can be controlled.

However, there were drawbacks to the conventional technique mentioned above.

That is, as the solenoid 9 is attached to the side surface of the cylinder 1 as shown in FIG.
In order to accommodate this, the diameter of the chamber 25 had to be increased. Therefore, rotary pressure Am 1 machine 2
7 becomes larger, and in order to increase the pressure inside the chamber 25, the entire wall thickness of the chamber 25 must be increased. ), the disadvantage is that the entire unit becomes large and heavy.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art and to provide a rotary compressor that is small and lightweight and that performs capacity control using a vane compressor.

The features of the present invention include at least a cylinder, a roller that rotates this cylinder V'3, a crank that is provided on a shaft and that rotates the roller, and a bearing that supports the shaft.
The interior of the cylinder is divided into a high pressure side and a low pressure side, and a vane that slides vertically while in contact with the roller and has a groove on its side surface. The front i-pibane can be held by fully inserting the pin provided at the tip of the ijJ'! A rotary compressor that is fully equipped with a 1+1 iron core kW solenoid and a power supply that fully controls the movement of the movable iron core, and the solenoid is arranged so that the movement of the movable iron core is in the axial direction. It is in.

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

(9) Fig. 4 is a schematic diagram of the main part 17 of a rotary compressor according to an embodiment of the present invention, and Fig. 5 is a vertical cross-section 1 of the main part of the rotary compressor shown in Fig. 4. -! It is 1.

In terms of weight and weight, parts with the same numbers as in Figure 1 are the same parts. So-C, 28p: +11111%29.30 with crank 4 integrally formed is 1lil each
Upper + + l + Uke, lower 1 jllll Uke, and Tame! Nl Toji 29°30 by 4i11128 i Branch I
It's a temple. 31, a solenoid mounting base having a pin guide hole 32 installed at the bottom of the cylinder 1;
The solenoid 9Al is set at f+11 at the frame IOA so that its pin 15 slides in the RIJ 1 self-aligning hole 32 and the movement of the movable iron core 13 is in the axial direction.
N's solenoid is fixed to the stand 31. A monument 26 into which the tip of the pin 15 fits is provided on the lower surface of the two vanes. Reference numeral 33 denotes refrigerating machine oil for lubrication stored in the lower part of the chamber 25'A.

The rotary compressor 2 of this embodiment constructed in this way
The operation of 7A is similar to that of the conventional rotary compressor 2 shown in FIG.
It is exactly the same as 7.

(10) However, by attaching the ty to the bottom of the solenoid 9Ae cylinder 1, it is possible to use the space where the cryowar front 33 at the bottom of the chamber 25A is a reservoir, which is not necessary to attach the solenoid 9 conventionally. The existing radial space is no longer needed.

Therefore, the length of the chamber 25A is the same as that of the conventional chamber 2.
Although it is almost the same as 5, its diameter.

Since the wall thickness can be reduced, the rotary compressor 27A is completely compact! ! It has the effect of being able to turn it into a financial asset.

FIG. 6 is a longitudinal sectional view of a main part of a rotary compressor according to another embodiment of the present invention. In FIG. 6, all the parts with the same numbers as in FIG. 5 are the same parts.

In this embodiment, the movable iron core 13 is made to move in the axial direction by fixing the solenoid 9Affi to a solenoid mounting base 31 attached to the upper part of the cylinder 1. The top surface of the vane 2B is provided with a hole 17426 into which the tip of the pin 15 fits.

(11) The rotary compression method of self-distribution that has been developed in this way
27.13 - ``I Threatened to Help'' - 1 Figure 5 shows 1 execution and 7 death.

In this '161trj row, by attaching the solenoid 9A to the upper part of the cylinder 1, the space above the cylinder 1 can be utilized, so the space in the radial direction becomes insecure. However, this Naui T.

Since a compressor hole (not shown) is disposed above the cylinder 1, the chamber 25B has a longer hole than the chamber 25 of the rotary compressor 27 shown in FIG. Although it needs to be made a little longer, its diameter and wall thickness can be made smaller, so compared to vL rice, 'C rotary allowance is compressed/1 pump 27
B (f-small form, I can be used to create a small form.

FIG. 7 is a vertical sectional view of a rotary compressor according to another embodiment of the present invention. In FIG. 7, the same parts as in FIG. 5 are denoted by the same numbers.

In this implementation, a solenoid mounting base (12
) 31AK is fixed so that the movement of the movable iron core 13 is in the axial direction.

Rotary compressor 27C of this embodiment configured in this way
The operation is also exactly the same as that of the embodiment shown in FIG.

In this embodiment, the lower bearing 30A has an integral structure with the solenoid mounting base 31A having the pin guide hole 32Afc, so in addition to the effects of the above embodiments, the dimensions between the center of the crank 4 and the center of the pin guide hole 32A Accuracy can be easily obtained, the clearance and size 1 (see Figure 3) required for the bottle 15 to fit into the groove 26 of 1/2A can be completely accurately obtained, and a special solenoid mounting base is not required. This has the effect of reducing the number of parts and making assembly easier. Note that the lower bearing 30A can be made of sintered metal, so it is easy to manufacture even if the solenoid mounting base 32A is made of metal and has a complicated shape.

As explained in detail above, according to the present invention, at least a cylinder, a roller rotating inside the cylinder, a crank provided on the shaft and giving rotation to the roller (13), Do + ilj uke,
DtJH Self-Cylinder Full Height Cylinder Divided into IE side and Low Pressure side 11iJ n Self slides vertically while in contact with the roller, and on its side, there is a vane with IF metal attached, and the pin provided at the tip fits into the groove of this vane. In particular, rIr! can hold said vane! 11h Solenoid with full iron core and movement of the movable iron core fljll
Since the rotary compressor is equipped with a power source and a solenoid so that the movement of the movable iron core is in the axial direction, it is possible to realize capacity control using a small and lightweight vane type F111. A full range of rotary compression bales can be provided.

[Brief explanation of the drawing]

FIG. 1 is for explaining the W'ffl control method using vane control for a conventional rotary IEm machine.
FIG. 1(a) is a cross-sectional view of the main part showing the state in which the holding operation of the vane is completely released, FIG. 1(b) is a cross-sectional view of the main part showing the state in which the vane is held, and FIG. 44. Time chart diagram showing the control pattern of the solenoid in Figure 1, No. 3
The diagram shows the movement of the movable iron core and the pin as it passes through the solenoid (14) in Figure 1. Main part sectional view showing the positional relationship of the vane and the groove of the vane, 4th
The figure is an old yellow 1g side view of the main parts of the rotary pressure tank/i-ani according to an embodiment of the present invention, FIG. 5 is a vertical cross-sectional view of the main part of the rotary compressor according to FIG. The figure is a top view of the main part longitudinal ++) of a rotary compressor according to another embodiment of the present invention, and FIG. 7 is a longitudinal section of the main part of a rotary compressor according to still another embodiment of the present invention It is a diagram. ■...C') 7da% 2A, 2B... Vane, 3.
...Roller, 4...Crank, 9A...Solenoid, 13...Movable iron core, 15...Pin, 16...'
Ichihara, 23...High pressure side, 24...Low pressure side, 26...
・Groove, 27A, 2713, 27C...Rotary compressor, 28...Shaft, 29...Upper Qll receiver, 30.3O
A...Lower 1111 receiver, 31, 31A...Solenoid mounting base. Agent: Patent attorney Kosaku Fukuda (and 1 other person) (15)

Claims (1)

[Scope of Claims] 1. At least a cylinder, a roller that rotates within the cylinder, a crank that is provided at 1llll and gives full rotation to the roller, a bearing that supports the shaft, and an entire high-pressure side inside the cylinder. A partition on the low pressure side is provided with a vane that slides vertically while in contact with the roller and has a groove on its 11111 surface, and a pin provided at the tip of the vane is fitted into the groove of the vane. In a rotary compressor equipped with a solenoid that has a movable iron core that can hold the movable iron core, and a power source and a metal that controls the movement of the movable iron core, the solenoid is arranged so that the movement of the movable iron core is in the axial direction. What I set up't/l! A rotary compressor with the following characteristics. 2. Connect the solenoid to the top or bottom of the cylinder.
15 (By fixing it to the attached solenoid mounting base,
[1f The movement of the moving iron core is in the axial direction.% IIF The rotary type 3 described in claim 1, the solenoid, is fixed to the solenoid mounting base provided integrally with the bearing, A rotary pressure machine according to claim 1, wherein the movable iron core moves in the axial direction.