JPS60101250A - Rotary stirling engine - Google Patents

Abstract

PURPOSE:To reduce vibration of an engine as well as the number of parts by arranging a circular rotor in a differently curved cylinder, and dividing the interior of the cylinder into two chambers connected to a high temperature part and a low temperature part to form a starling engine. CONSTITUTION:Inwardly curved sliding contact parts 2a are provided up and down in a differently curved cylinder 2, and always brought into contact with the outside circumferential surface of a rotor 3. A divided chamber B is partitioned into three rooms B1 to B3 by sliding plates 5, 6. A high temperature part 7 is connected with the upper room B1 and a low temperature part 8 connected with the lower room B3. Rotating force is imparted clockwise ''a'' to the sliding plates 5, 6. Likewise, the room A is divided by the sliding plates 5, 6 into three rooms A1 to A3. the high temperature part 7 is connected with the room A1 while the low temperature part 8 connected with the room A3. Rotating force is imparted clockwise ''a'' to the slide plates 5, 6.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rotary Stirling engine that uses the pressure difference generated between a high-temperature section and a low-temperature section to obtain side force.

Stirling engines of various structures have been proposed or prototyped in the past, and currently, the reciprocating type Stirling engine is the mainstream. Such a reciprocating Stirling engine has many parts,
There are various problems such as large vibrations.

The present inventor has created the present invention in order to solve the drawbacks of such a reciprocating type.

The object of the present invention is to divide the inside of the cylinder into two chambers by rotatably installing a perfectly circular rotor inside a cylinder with a different curvature, and to connect a high heat section and a low heat section to each chamber. To provide a rotary Stirling engine in which a temperature difference is generated within the engine and a rotor is rotated by utilizing heat convection (pressure difference) caused by this temperature difference.

Therefore, an object of the present invention is to eliminate the need for constructing a large number of parts as in the conventional reciprocating Stirling engine.
It is an object of the present invention to provide a rotary Stirling engine that is constructed with a small number of parts and has little vibration.

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

1 to 5 show longitudinal sectional front views of a single-rotor North Stirling engine (1) according to the present invention. A rotary Stirling engine (1) consists of a cylinder (2), a rotor (3) with a perfectly circular cross section that is rotatably installed in the cylinder (2), and left and right partitioned by the rotor (3). room (3), FB+ and rotor (3)
), a pair of curved slide plates (5) and (6) supported by support bolts (4), and a chamber (A);
(B) High temperature part (7) connected to each ffjli part
and a low heat section (8).

The cylinder (2) has a cylindrical shape, and as shown in the drawing method described later, the cross section is different from an oval shape and has a shape with a different curvature depending on the location (hereinafter, a cylinder with such a cross-sectional shape is referred to as a cylinder with a different curvature (2). ) This cylinder (2) with a different curvature has a sliding contact part (2) whose upper and lower parts are curved inward as shown in the figure.
a) and (2a).

The sliding contact portions (2a), (2a) and the outer circumferential surface of the rotor (3) always maintain a state of contact. Therefore, the rotor (
Even if 3) rotates, the prisoner in the room and (B) are reliably separated and maintain a sealed state.

Slide plates (5) and (6) are slidably supported on the rotor (3). The rotor (3) has a main part (3b) that is integrated with the shaft (3a), and a pair of sub parts (3b) that are integrated with the main part (3b) using support bolts (4), (4).
C), (3C). slide plate (5),
(6) on both center curved surfaces of the main part (3b), width part (3C),
(3C) on top of this, support bolts (4), (4
) in the slide plates (5), (6) with long holes (5a),
(5a) and bind the two together. At this time, the main part (3b)
Washers (9) and (9) are interposed between the width portion and the width portion (3C) so that the slide plates (5) and (6) slide smoothly.

The slide play mortars 5) and (6) have a curved shape, and as shown in FIGS. 6 and 7, a sealing member 2) and a σ blade are provided at both ends so as to be retractable by means of a spring (lla).
(11) is in constant sliding contact with the inner peripheral surface (2b) of the cylinder (2) as the rotor (3) rotates. Peripheral surface (
In order to be in constant sliding contact with 2b), the cross-sectional curvature of the different curvature silling (2b) and the curvature of the slide plates (5) and (6) must be related to each other, but this relationship can be determined using the drawing method described later. shall be explained.

A high heat section (7) and a low heat section (8) are connected between the upper and lower ends of the room (A) and FB+, respectively, and each room FA) and FB+ form part of a heat circulation system. As shown in the figure, a high heat section (7) is connected to the upper end of the room, and a low heat section (8) is connected to the lower end of the room, while a low heat section (8) is connected to the lower end of the room (Bl). The high temperature parts (7) are connected respectively.Therefore, the rooms (
A clockwise convection of heat occurs as shown by the arrow (A) in A), and a clockwise convection of heat also occurs in the room f13) as shown by the arrow (A). aOl (10 indicates a regenerative heat exchanger, as shown in the figure, a low heat section (8) and a high heat section (7)
This allows for efficient heat regeneration. In the embodiment, air is used as the fresh gas in the circulation system, but helium gas or the like may also be used.

Next, we will discuss the effect.

In the state shown in Figure 1, the room (B) is divided from the top to the room (B).
l), a room (B2) and a room (B3) are separated by slide plates (5) and (6). In this state, the temperature of the room (B1) is the highest, and decreases in the order of room (B2) and room (B3). In other words, the pressure is highest in room (B1), room (B2), and room (B3).
decreases in the order of l, s(.

Therefore, the slide plate (5) that partitions the room (B1) and the room (B2) is given a rotational force in the clockwise direction (A), and the slide plate (5) that partitions the room (B2) and the room (B3) is rotated clockwise (A). Also in (6), rotational force is applied in the clockwise direction (A). On the other hand, room (A) is slide play 1- (51 (
6) Three rooms (A''), (A2), (A3) by
It is divided into two rooms (A1), (A2), (A
The pressure of 3) is the highest in (A1), (A2), (A3)
The value decreases in this order. Therefore the slide plate (5)
, (6) are given a rotational force in the clockwise direction (A) in the same manner as above. Then, due to the rotational force of the slide plate (5H6), this (5) (6) and the -dimensional rotor (
3) is also rotated clockwise.

Figure 2 shows a state in which the rotor (3) has rotated slightly from the state shown in Figure 1. The room FB+ on the right side is divided into three rooms (B1), (B2), and (B3) as shown in Figure 1.
The pressure (B1) is the highest and becomes lower in sequence, such as (B2) and (B3). On the other hand, the room (A1) on the left side is similarly divided into three rooms (A1), (A2), and (A3), and (A1
), (A2), and (A3), the pressure decreases in this order.

Therefore, the rotor (3) rotates clockwise (A).

FIG. 3 shows a position arbitrarily rotated from the state shown in FIG.

The room (B) is separated by the slide plate (5).
It is divided into two rooms, Bl) and (B3).

In this state, the chamber (B1) communicates with the high temperature section (7), and the section 2a (B3) communicates with the low temperature section (8), so the pressure in the chamber (B3) is lower than that in the chamber (B1).

Therefore, rotational force is applied to the slide plate (5) in the clockwise direction (A). On the other hand, the prisoners in the room also have room (A1) and (
A3) is divided into two rooms, and the pressure is in the high temperature part (7) side (
A1) Room is more expensive than room (83). Therefore, the slide plate (6) is subjected to a rotational force 1j in the clockwise direction. The rotor (3), which is integrated with these slide plates (5) and (6), is also rotated clockwise by the rotational force of the slide plates (5) and (6).

Similarly, in FIGS. 4 and 5, a pressure difference is created between the high heat area (7) and the low heat area (8) in each chamber hole +B), which causes the rotor (3) to rotate clockwise. do. Thus, the rotor (3) has a high heat section (7) and a low heat section (
Using the pressure difference generated between rotor (3) and
) is rotated, and this rotational force is taken out as power to the outside via the shaft (3a).

By the way, the cross section of the cylinder (2) is as described above (the curvature is different, and the sealing members of the slide plate 1 (5) and (6) are attached to the inner peripheral surface (2b) of this cylinder (2).
) in order to be in constant sliding contact with the slide plate (5),
(6) needs to slide in the radial direction of the cylinder (2) with respect to the skin bolts (4), (4). This sliding is done smoothly by the elongated holes (5a) and (6a) as shown in FIG.

FIG. 8 is a diagram illustrating a method for producing the above-mentioned cylinder plate (2) with a different curvature and a slide plate that rotates in constant sliding contact with the cylinder plate (2), which can be drawn as follows.

(1) First, draw an arbitrary circle (corresponding to rotor (2)) for one seedling (in the figure, a circle with a radius of 5 is drawn) (2
), divide this circle into 8 equal parts at 45 degree intervals. Let the intersections of this equal dividing line and the circle be A, B, C, D, E, F, G, and H.

(3), from point B] Set point B' on the equisector line outside cm.

(4) Set 'point C' on the equal dividing line 2 cm outside point C.

(5), 1. A point D' is provided on the equisector line outside cm.

(6), 1 from point F. A point F' is set on the equal dividing line outside cm.

(7) Set point G' on the equal dividing line 2 cm outside point G.

(8), from point 4] Set point H' on the equisector line outside cm.

(9) Draw a circle with a radius of 5 cm centering on points A and B', define the intersection of these two circles as (a), and connect points A and B' with a curved line with (a) as the center.

(10), draw a circle with a radius of 6 cm centering on points B' and C'', set their intersection as (1)), and draw a curved line between points B'' and C' with this intersection 0)) as the center. tie.

C1), draw a circle with a radius of 6 cm centering on points C'' and D', define their intersection as (C1), and connect points C' and D'' with a curved line with this intersection (C) as the center.

(121, Draw a circle with a radius of 5 marks centering on points D' and E, and let the intersection of these circles be (1), and this intersection (d)
Connect points D' and E with a curved line centered at .

03.Draw the left half of the curve using the fixation method, and draw points A and B'
Obtain a curve connecting C', D', EF''G''H''A.

This is the cylinder with different curvature (2) mentioned above.

(14), then a radius of 6.
Draw a 5 cm circle and let the intersection of these two circles be 1'.

Draw a curve connecting points B' and H'' with this ■' as the center.This curve is the slide plate (5) mentioned above,
This corresponds to (6).

As shown above (, cylinder (2) and slide plate (5)
) and (6), the slide plates (5) and (6) rotate while being substantially in sliding contact with the inner peripheral surface of the cylinder. Note that the expression "abbreviated" here means that there may be cases where the slide plate does not make secure sliding contact with the inner circumferential surface of the cylinder, but in this case, the movement of the sealing member Q11, .

As is clear from the following explanation, according to the present invention, unlike the conventional reciprocating type Stirling engine, it is possible to reduce the number of parts and provide a completely new engine with less vibration.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, FIGS. 1 to 5 are longitudinal sectional front views explaining the order of operation, FIG. 6 is a perspective view of the slide play 1, and FIG. 7 is a seal portion. The sectional view of FIG. 8 is a schematic drawing showing a method of making a variable rate cylinder and a slide plate that slides thereon. In the drawing, (2) is the cylinder, (3) is the rotor, (
5), (6) are slide play 1, (7) is high temperature part,
(8) is a low heat section, (10) is a regenerative heat exchanger, (Al, f
B] is a room. Patent Applicant Masataka Nagahama Procedural Neyama Masashi (self-motivated) ■, Indication of Rate Patent Application No. 58-210546 2, Name of Invention Rotary Schooling Enogin 3, Relationship with the Amendment Person Case Patent Applicant 4. In Specification 5 to be amended, the statement of contents of the amendment, paragraph 5, line 15, "Enclosed gas" is corrected to "Enclosed high-pressure ltMfi body."

Claims (1)

[Claims] A rotor is rotatably installed in a cylinder with a different curvature, and two chambers are provided inside the cylinder. A high-heat area and a low-heat area are connected to each chamber to generate heat convection (pressure difference) within the chamber. In addition, a pair of curved slide plates are slidably provided on the rotor, and both ends of the slide plates protrude from the rotor so that the tips of the slide plates come into sliding contact with the inner peripheral surface of the cylinder. A rotary Stirling engine characterized by being configured to rotate a rotor by applying convection (pressure).