JPH03213618A - Butterfly type supercharger - Google Patents

Abstract

PURPOSE:To obtain a large capacity supercharger with a small sized structure by rotating a rotating body in a constant speed with the rotation of a main rotating shaft and, on the other hand, by swinging partition walls reciprocatively in a specified angular range by means of an auxiliary shaft to which the rotation of the main rotating shaft is transmitted through a speed change mechanism so as to inhale and exhale a fluid. CONSTITUTION:In an outer shell (housing) 10 provided with an intake 6 and an outlet 8 of a fluid, a main structure constructed with two kinds of wings of partition walls 1 and a rotating body 2 is enclosed. The rotating body 2 is fixed to a main rotating shaft 3 driven with an engine and rotated in a constant speed same to the main rotating shaft 3, on the other hand, the partition walls 1 are driven with an auxiliary rotating shaft 4 driven by the main rotating shaft 3 through a speed change mechanism 20, and are rotated in an inconstant speed accompanied with a reciprocative swing motion (butterfly motion) in a specified angular range around the central axis of the shaft 4. By this operation, volume variations are generated in a chamber 9, and a fluid is inhaled in the chamber 9 when gaps between the two wings are opened and exhaled from the chamber 9 when the gaps are closed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a supercharger used in automobile engines and the like.

[Conventional technology]

Examples of conventional superchargers used in automobile engines, etc. include various types as shown in Fig. 18.1.9.20.21, and the one shown in Fig. 18 is a Roots type supercharger. 1 is the housing, 2
3. shows a rotary piston, and two cocoon-shaped rotors 3.
4 rotates as shown by the thin arrow. The one shown in FIG. 19 is a sliding vane type supercharger, in which 1 is a housing, 2 is a rotor, 3 is a vane, 4 is a pin, and 5 is an outlet edge A. The one shown in Fig. 20 is a spiral type supercharger, where 1 is an air inlet to the second working chamber, 2 is a drive shaft, 3 is a displacer guide, 4 is an air inlet to the first working chamber, and 5 is a housing. , 6 indicates a displacer. 21st
What is shown in the figure is a rotary piston supercharger. 1 is the housing, 2 is the out rotor, 3 is the inner rotor, 4 is the outlet edge A, 5 is the chamber L, 6 is the chamber ■, 7 is the chamber ■, and the rotor thin arrow Rotate as shown. In each figure, the thick arrows in the figure indicate the flow of air; air is taken in from the engine's intake port, discharged from the discharge boat, and connected to the intake pipe.

[Problem to be solved by the invention]

In the above-mentioned conventional supercharger, the amount of air taken in during one rotation of the rotating shaft (in the case of the spiral type shown in Fig. 20, the period during which the center of gravity makes one cycle) is defined as the amount of charge, and the volume of the entire mechanism is When (in the roots type shown in Figure 18, the volume of the peanut-shaped part) is taken as the volume, the charge amount/volume ratio is approximately 50%, so the charge amount is approximately 50% as a proportion of the volume. The problem is that the device is not large, and increasing its capacity would require increasing the size of the device. In addition, some of them have complicated structures and are not easy to manufacture.

In view of the above problems, it is an object of the present invention to provide a small-sized, large-capacity supercharger with a simple structure and a high charge/volume ratio.

[Means to solve the problem]

In order to achieve the above object, the present invention includes an outer shell surrounding the rotating body, and an appropriate number of sets of suction ports and discharge ports provided at appropriate intervals in the circumferential direction of the outer shell. The rotating body is provided with a space that communicates with the suction port and the discharge port at appropriate intervals in the circumferential direction, and a partition body that divides the space is provided in the space, and the rotating body is provided with a partition that divides the space and that is connected to the rotation of the rotating body. The partition body is arranged in a direction relative to the rotational direction of the rotating body so that the volume increases at a position where the divided space communicates with the suction port, and the volume contracts at a position where the divided space communicates with the discharge port. To provide a butterfly type supercharger characterized in that the butterfly type supercharger is provided so as to be relatively movable back and forth.

Further, the rotating body is directly connected to the main rotating shaft, and the partition body is directly connected to a sub-rotating shaft, and the sub-rotating shaft supports a moving gear arm, a moving gear, a pin, a sliding sleeve, and a runner's arm by the main rotating shaft. It is preferable that the moving gear is driven by the rotation of a main rotating shaft through the moving gear, and that the partition wall body reciprocates by rolling on a stationary gear provided on the outer shell body.

[For production]

When the main rotating shaft rotates, the rotating body directly connected to it rotates at the same constant speed as the main rotating shaft. In addition, rotation is transmitted from the main rotating shaft to the sub-rotating shaft via the moving gear arm, moving gear, pin, sliding sleeve, and runner's arm, and this sub-rotating shaft moves at an inconstant speed, and the partition body directly connected to this It performs a butterfly-type swinging motion that reciprocates within a predetermined angle range while rotating with the rotating body, and as a result, the fluid is Inflow and discharge.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings. 1st to 11th
The figure shows a first embodiment. FIG. 1 is a vertical sectional view showing an example of a butterfly type supercharger 30 according to the present invention, and FIG. 2 is an external view thereof. 3 is a cross-sectional view taken along the line ■-■ in FIG. 1, and FIG. 4 is a cross-sectional view taken along the line ■-■ in FIG. The outer shell (hereinafter referred to as housing) 10 is provided with an inlet 6 and an outlet 8 for fluid from the outside, and the main parts are housed inside. The main parts of this interior are the partition wall body (hereinafter referred to as runner's wing) 1 and the rotating body and chaser's wing (Chas' wing).
er's wing) 2 types of wings (
Chaser's Wing 2
is directly driven by the main rotating shaft 3 driven by the engine and rotates at the same constant speed as the main rotating shaft, and the runner's wing 1 is rotated through a transmission mechanism (mechanical device) 20 driven by the main rotating shaft 3. It is driven by the sub-rotary shaft 4 and performs a rotational movement at an irregular speed with reciprocating rotational movement (butterfly movement) within a predetermined angle range around the axis. This action creates a volume change within the chamber 9, and 2
When the gap between the two wings opens, fluid flows into chamber 9.
When the chamber 9 is closed, the fluid is expelled out of the chamber 9. Hereinafter, the structure and function of each part of this device will be described in detail with reference to the drawings.

As shown in FIG. 3, the runner's wing 1 and the chaser's wing 2 are arranged alternately, and these two types of wings are combined to form a pair of structures. Also, Ranner's Wing 1 is 22.5 against Chaser's Wing 2.
Can move freely within a certain range. This figure shows the details of the inlet of fluid F to the supercharger, which communicates with the fluid inlet 6 to the supercharger housing 10 and has four intakes arranged at equal intervals in order to take the fluid between each blade. A port 5 is provided, and the opening angle of the intake port 5 is approximately 45 degrees, which is equal to the angle (45 degrees) of the solid portion of the chaser's wing 2.

FIG. 4 shows details of the outlet for fluid F from the supercharger. Here, four discharge ports 7 are provided at equal intervals to discharge fluid F from between each blade.
Its opening angle is about 22.5 degrees. The fluid flowing out from the discharge port 7 is discharged from the discharge port 8 of the supercharger housing 10 to the outside of the machine.

The structure of the runner's wing 1 is shown in FIGS. 5 and 6.

Figure 5 is a longitudinal sectional view of the same, and as shown in the V-■ longitudinal sectional view of Figure 6, and the VT-VI perspective view of Figure 5, there are four blades arranged at equal intervals. The angle of the solid part of each blade is 22.5 degrees (π/8). 7th to 8th
The figure shows Chaser's Wing 2. Fig. 7 is a vertical cross-section of the same, and Fig. 8 is a sectional view taken along ■-■ of Fig. 8, and Fig. 8 is a view taken along ■-■ of Fig. 7.
Each wing has a solid portion with an angle of 45 degrees (π/4).

Hereinafter, the mechanism based on the combination of the angles of both wings will be referred to as a four-wing supercharger. With this combination, Ranner's Wing 1 has a 22.
It can move freely within a range of 5 degrees (see Figure 3.4).

FIG. 9 is a sectional view taken along the line IX-IX in FIG. 1, and is a plan view of the transmission mechanism 20 provided between the main rotating shaft 3 and the auxiliary rotating shaft 4.

A longitudinal sectional view of this transmission mechanism is shown in FIG. An internal gear type stationary gear 21 having an inner diameter is provided along the inner wall of the housing 10.
A moving gear 23, which is a small gear (pinion gear) with an outer diameter d, meshes with the moving gear arm 24 (which rotates in synchronization with the chaser's wing 2 as described later) attached to the main rotating shaft 3. When the main rotating shaft 3 rotates, the moving gear 23 meshes with the stationary gear 21 and revolves around the main rotating shaft axis 0° and rotates around its axis O1. . Mechanically, only one moving gear 23 may be used, but
In this case, two pieces are used to improve rotational balance. Each moving gear 23 is set upright with a bin 25 protruding from a position 0□ apart from its center OI by a predetermined distance r, and a sliding sleeve 26 is attached to this bin 25, and this sliding sleeve 26 is shared by a runner's arm 27. Both slide against each other. The runner's arm 27 is connected to the auxiliary rotating shaft 4, and the auxiliary rotating shaft 4 is connected to and drives the runner's wing 1 (see FIG. 1).

In the four-wing supercharger having the above configuration, the diameter d of the moving gear 23 is -(1/4) the diameter of the stationary gear 21. FIG. 10 shows the center 0 of the moving gear 23. The distance between the center 02 of the bin 25 and the center 02 of the bin 25 is r
An example of the relative movement between the moving gear arm 24 and the runner's arm 27, that is, the relative movement between the main rotating shaft 3 and the sub rotating shaft 4 in the case of the above-described example will be shown.

FIG. 10(a) schematically represents the relative positions of each element of the transmission mechanism shown in FIG. 9 during operation, starting from the moving gear arm 24 that rotates together with the main rotating shaft 3.
This shows a case where the included angle between the moving gear arm 24 and the runner's arm 27 that rotates the sub-rotating shaft 4, that is, the opening angle α of both arms, has swung to the negative maximum and is 1 α.
indicates a case where this position is the starting point and the rotation angle of the main rotating shaft 3 is zero. FIG. 10(b) shows a case where the rotation angle of the main rotating shaft 3, that is, the rotation angle of the moving gear arm 24, is 45°. In this case, the runner's arm 27 swings to the maximum in the positive direction, and the opening angle of both arms becomes +α. There is.

Next, in FIG. 10(C), the moving gear arm 24
When the rotation angle is 90°, in this case, the lanner's arm 27 again swings to the maximum minus angle, and the included angle becomes 1 α, resulting in the same state as in the original state shown in FIG. 10(a). Thereafter, the same operation is repeated, and while the moving gear arm 24, that is, the main rotating shaft 3 makes one round of the circumference, the runner's arm 27, that is, the sub rotating shaft 4 reciprocates within a certain range of angles, a kind of oscillating movement, that is, Go around the circumference while performing a butterfly motion. By adjusting the distance r between the center 01 of the moving gear 23 and the center 0□ of the pin 25 at this time, the value of the included angle α is increased or decreased, and the degree of deflection of the butterfly movement is determined by the value of α. If the diameter of the moving gear 23 is d, there is no runout when r=0, and the runout is maximum when r=0. By adjusting the position of this pin 25, the gap between the two blades is made zero when the main rotation axis is 0 degrees,
When the main rotation axis is 45 degrees, the gap can be set to 22.5 degrees (maximum), and when the main rotation axis is 90 degrees, the gap can be reduced to zero again. In the four-wing supercharger shown in this embodiment, the position of the pin 25 protruding from the moving gear 23 is at the center of the moving gear 23. 0.57X Next, the inflow and outflow of fluid F due to the operation of the four-blade supercharger having the above configuration will be explained.

Fig. 11 shows the movement of the chaser's wing 2 and the runer's wing 1 while the main rotating shaft 3, that is, the chaser's wing 2, rotates from 0 degrees to 90 degrees, and the accompanying state of inflow and outflow of the fluid F. . Although the intake port 5 and the discharge port 7 are actually separated into upper and lower sections as shown in FIG. 1, they are drawn on the same plane in this figure for the sake of explanation. When the main rotation axis is 0 degrees, Fig. 11 (a
), the chaser's wing 2a and the runner's wing 1a are in contact. At this time, the space between the runner's wing 1a and the chaser's wing 2b is opened at the maximum angle of 22.5 degrees, and the inter-blade chamber 9a is filled with the fluid FA that has flowed in from the intake port 5a.

As the main rotating shaft 3 rotates from this state,
Runner's wing la rotates faster than chaser's wing 2a. Next, when the main rotation axis rotates 16 degrees, the fluid FA flows between the two wings, the ner's wing 1a, the chaser's wing 2b, and the partition wall W, as shown in FIG. 11(b).
At the same time, fluid FB is sucked between the runner's wing 1a and the chaser's wing 2a. When the main rotation axis rotates 37 degrees, Figure 11 (
As shown in C), the fluid FA is discharged to the charge port 7a. At this time, the volume of fluid FA is approximately 0
．． 04V (V=I! rr (R%R2')) (actually measured value). Here, R is the maximum radius of the chaser's wing 2 or the runner's wing 1, R2 is the minimum radius, and l is the length of the main axis of the wing in the axial direction. Next, the main rotation axis rotates at 48 degrees, 56 degrees, 68 degrees, and 90 degrees (Fig. 11(d)).
, '(e), , (f), (g)) As it rotates, fluid Fn is discharged to the discharge port 7a. The volume of the fluid FB at this time is approximately 0.06V (actually measured value). In this way, by rotating the main rotating shaft by 90 degrees, there are four inlet ports 5 and four discharge ports 7 (5'a, 5b, 5c, 5d, 7a, 7).
b, 7c.

7d), so by rotating the main rotation axis by 90 degrees, 4
x (0,04+0.06) V=0.4V (7) Fluid is discharged. Furthermore, if the main rotation axis rotates twice,
×0.4V=1.6V, that is, 160% of the fluid is discharged as a charge amount/volume ratio.

Due to the above operation, according to this embodiment, the charge amount/volume ratio, which was about 50% in the conventional supercharger, is increased to about 160%.

Compared to conventional products, the amount of charge (-volume of fluid F sent from the population per revolution to the outlet) can be increased relative to the volume of the supercharger3.Therefore, it is possible to create a small and large-capacity supercharger. It becomes possible.

In addition, it has a higher sealing performance than conventional products and has a simpler structure. Also, with simple adjustment (moving gear center 0)
．． By changing the distance r between the pin center 02 and the pin center 02), the amount of charge can be changed.

Next, FIG. 12 shows a second embodiment. In this embodiment, the first
Although it is structurally and theoretically the same as the embodiment, the inflow and outflow directions of the fluid are parallel to the main rotation axis, and the sectional view taken along line A-A in FIG. )) and the BB sectional view (FIG. 12(C)), appropriate holes (intake port 5 and discharge port 7) are formed on the inflow and outflow surfaces. The fluid F flows in the direction of the arrow shown in FIG. 12(a).

Next, a third embodiment is shown in FIG. In this case, the runner's wing 1 and the chaser's wing 2 are not interlocked as in the previous structure, and the chaser's wing 2 has a cylinder structure. It has a simple and easy-to-make structure like Ranner's Wing L.

In this case, it is appropriate for the fluid to flow in and out in the axial direction, similar to what was introduced in the second embodiment. This structure is also mechanically stable.

Next, a fourth embodiment is shown in FIG. Both Ranner's Wing 1 and Chaser's Wing 2 use three blades with the angles of each blade being 30 degrees and 60 degrees, and this is called a three-wing supercharger. The charge amount/volume ratio in this case is the same as that of a four-blade supercharger. In this case, the structures of the transmission mechanism 20, each blade, its intake boat, and discharge boat are basically the same as those in the first embodiment.

Next, a fifth embodiment is shown in FIGS. 15 to 17. In this case, as shown in FIG. 15, the runner's wing 1 and the chaser's wing 2 each consist of two wings. This is called a two-wing supercharger. In the case of these two wings, the chaser's wing 20 angle is 6 as shown in Figure 16.
8 degrees, the lanner's wing also has an angle of 68 degrees, and the included angle between both wings is 45 degrees, which is good in terms of performance. In this case, if the stationary gear 21 is an internal gear type as shown in the first embodiment, the moving gear 23 will interfere with the internal elements of the device, so FIG. 17 shows the transmission mechanism 20. Stationary gear 21 as shown
is an external gear type, and a timing belt 22 is stretched between it and a moving gear 23 to transmit power. The other mechanisms are basically the same as in the first embodiment, and elements having the same functions are given the same reference numerals as in FIG. 1, and detailed explanations will be omitted. In this case, as shown in the figure, the rotational angles of the pin 25 protruding from the moving gear 23 and the runner's arm 27 that slides on the sliding sleeve 26 do not match as in the case of FIG. 1, but are slightly shifted. Even with this structure, the fundamentals of the relative movement of the main and sub-rotary axes regarding the oscillating motion of the Ranner's arm (butterfly motion of the Ranner's wing) remain unchanged.

As explained above with various examples, - In boat fishing, as the number of blades increases, the charge amount/volume ratio increases. about 1.5
Double, with 4 blades, approximately 2 times, and with 8 blades, approximately 4 times. However, increasing the number of blades tends to cause a surge phenomenon, so to avoid this, it is generally better to increase the number of blades for engines with low rotation speeds and decrease them for engines with high rotation speeds. Furthermore, the angle of the blades is not limited to the angles shown in the above embodiments, and can be freely selected.

〔Effect of the invention〕

By implementing the present invention, the following effects can be achieved.

(1) Compared to conventional products, the amount of charge (volume of fluid delivered per rotation) is larger than the volume of the supercharger, so a compact and large-capacity supercharger can be obtained.

(2) Higher sealing performance than conventional products.

(3) The structure is simple, and the amount of charge can be changed with simple adjustment.

[Brief explanation of drawings]

The first embodiment is shown in FIGS. 1 to 8. FIG. 1 is a vertical cross-sectional view of a butterfly type supercharger, FIG. 2 is an external view thereof, and FIG. 3 is an I-I [[ 4 is a cross-sectional view taken along IV-IV in FIG. 1, FIG. 5 is a vertical cross-sectional view of the runner's wing, FIG.
The figure is a vertical cross-sectional view of the chaser's wing, Figure 8 is a cross-sectional view taken from ■-■ in Figure 7, and Figure 9 is a cross-sectional view taken along line IX-IX in Figure 1.
A plan view of the transmission mechanism, FIG. 10, shows the operating state according to the rotation angle of each element of the transmission mechanism. When the rotation angle is 45 degrees, FIG. 10C shows the case where the rotation angle is 90 degrees. Figure 11 shows the operation of each wing section in response to the rotation of the main rotating shaft of the supercharger, and Figures 11 (a), (b), (c), (d)
), (e). (f) and (g) The rotation angles of the main rotation axis are 0 degrees, 16 degrees, 37 degrees, 48 degrees, 56 degrees, 68 degrees, and 90 degrees, respectively.
The case of degree is shown. Fig. 12 shows the second embodiment;
) The figure shows a sectional view taken along line B-B in figure (a). Figure 13 is the third
FIG. 14 is a cross-sectional view of the wing portion of the embodiment, showing the wing of the fourth embodiment, where (a) shows a runner's wing, and (b) shows a chaser's wing. 15 to 17 show the fifth embodiment, FIG. 15(a) shows a runner's wing, FIG. 15(b) shows a chaser's wing, FIG. 16 shows a preferred shape in the case of two wings, and FIG. The figure shows a plan view of the transmission mechanism. (a) is a longitudinal cross-sectional view thereof, and (b) is a CC view of (a). Figures 18 to 21 show examples of conventional superchargers, with Figure 18 showing a roots type, Figure 19 a sliding vane type, Figure 20 a spiral type, and Figure 21 a rotary piston type supercharger. . 1... Bulkhead body runner's wing), 2... Rotating body (chaser's wing), 3... Main rotating shaft,
4...Sub-rotating shaft, 6...Intake port,
・Discharge port, 10... Outer shell (housing), 21... Stationary gear, 23... Moving gear, 24... Moving gear arm, 25... Pin, 26... Sliding Sleeve, 27...Ranner's arm.

Claims (1)

[Claims] 1. An outer shell surrounding the rotating body, and an appropriate number of sets of suction ports and discharge ports provided at appropriate intervals in the circumferential direction of the outer shell,
The rotating body is provided with a space that communicates with the suction port and the discharge port at appropriate intervals in the circumferential direction, and within the space is provided a partition that divides the space, and in relation to the rotation of the rotating body, the above-mentioned The partition body is arranged relative to the rotational direction of the rotating body so that the volume of the divided space increases at a position where the divided space communicates with the suction port, and the volume contracts at a position where the divided space communicates with the discharge port. A butterfly type supercharger characterized by being installed in a reciprocating manner. 2. The rotating body is directly connected to the main rotating shaft, and the partition body is directly connected to the sub-rotating shaft. Claim 1, wherein the moving gear is driven by the rotation of a main rotating shaft through the moving gear, and the partition wall body reciprocates by rolling on a stationary gear provided on the outer shell body.
Butterfly type supercharger as described.