JPH0359355A - Scroll type fluid device and air conditioner - Google Patents

Abstract

PURPOSE:To reduce a sliding force and eliminate a maintenance for a long period of time by a method wherein a compressing means is provided at one side of a movable scroll and an expansion means is provided at the other side of the movable scroll. CONSTITUTION:In case of a compressing means 21, a first movable lap 52 is rotated in a clockwise direction under a primary rotation of a movable scroll 5, a compressing chamber 23 is formed from outer peripheral ends of both laps 32 and 52. The compressing chamber 23 is shrinked while moving in a scroll form toward a central part and this is communicated with a discharging port 26 from inner peripheral ends of both laps 32 and 52. In turn, simultaneously, in case of an expansion means 22, the first movable lap 53 is rotated in a counter- clockwise direction, an expansion chamber 24 is formed at the inner peripheral ends of both laps 42 and 53, the expansion chamber 24 expands while mixing in a scroll form toward outside and this is communicated with a discharging port 28 from an outer peripheral ends of both laps 42 and 53. A compressing means 21 is formed at one side of the movable scroll 5 and the expansion means 22 is formed at the other side, so that a thrusting force of the movable scroll 5 is balanced and the pressing forces of each of the laps 32, 42, 52 and 53 against the bate plates 31, 41 and 51 can be reduced and a sliding force of each of the laps 32, 42... is reduced and a wear at the extreme end can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a scroll-type fluid device equipped with a double-toothed scroll and an air cycle type air conditioner using the scroll-type fluid device.

(Prior art) Conventionally, air conditioners compress and expand a refrigerant to form a refrigeration cycle, and perform air conditioning by exchanging heat between the refrigerant and air. An air cycle type air conditioner has been developed that directly compresses and expands the air to form a refrigeration cycle.

This air cycle type air conditioner has a rotor with multiple vanes housed in the casing, as disclosed in "Air Conditioner Business" (February 15, 1979 issue), "Propositions for the Energy Saving Era". There is a rotary vane type fluid device using a rotary vane type fluid device, and a heat exchanger is connected to the rotary vane type fluid device. In the rotary vane type fluid device, an approximately half portion of the rotor during one rotation is configured as a compression mechanism, and the other approximately half portion is configured as an expansion mechanism,
Rotate the rotor to draw indoor air into the compression mechanism.
After it is compressed into high-temperature, high-pressure air, it is passed through a heat exchanger for heat exchange, converted into low-temperature high-pressure air, and introduced into an expansion mechanism, where it is expanded to become low-temperature, low-pressure conditioned air and blown into the room.

(Problem to be solved by the invention) In the air cycle type air conditioner described above,
Since a rotary vane type fluid device is used, the tip end surface of the vane always moves in sliding contact with the inner circumferential surface of the casing.

However, this has the problem that the tip of the vane is easily worn out, and in particular, the life of the vane is short because lubrication is difficult. Therefore, frequent maintenance is required, which poses a practical problem.

The present invention has been made in view of the above, and aims to eliminate the need for long-term maintenance and solve practical problems by reducing the sliding contact force.

(Means for Solving the Problems) In order to achieve the above object, the means taken by the present invention is to balance thrust and direction forces by configuring compression means and expansion means using double-toothed scrolls. This is to reduce the sliding contact force.

Specifically, as shown in FIG. 1, the means taken by the invention according to claim (1) is that first, a spiral first fixing wrap (32) is erected on the front surface of the substrate (31). A first fixed scroll (3) consisting of a substrate (41) and a second fixed scroll (4) consisting of a spiral second fixed wrap (42) erected on the front surface of a substrate (41) are spaced apart from each other by a predetermined distance. A movable scroll (5) is provided with a first movable wrap (52) and a second movable wrap (53) in a spiral shape on both sides of a substrate (51), which are arranged in parallel and facing each other. scroll(
Between 3) and (4), the first movable wrap (52) is attached to the first fixed wrap (32), and the second movable wrap (53) is attached to the second fixed wrap (42) and arranged in parallel. There is. The center of the movable scroll (5) is both fixed scrolls (3).

The movable scroll (5) is eccentric from the center of (4) and so that the movable scroll (5) revolves without rotating.
A support means (6) for supporting the movable scroll (5) is provided, and a drive means (7) for revolving the movable scroll (5) is provided. Furthermore, the first fixed scroll (3)
There are both wraps (32) between the and the movable scroll (5).
A suction port (25) is opened on the outside of (52), and a discharge port (26) is opened in the center, and the fluid flowing in from the suction port (25) is compressed between both wraps (32) and (52). Compression means (21) is configured. In addition,
The second fixed scroll (4) and the movable scroll (5)
Between them are both wraps (42).

(53) has a suction port (27) in the center and a discharge port (27) on the outside.
28) are opened, and an expansion means (22) is configured to expand the fluid flowing in from the suction port (27) between the wraps (42) and (53).

Further, the means taken by the invention according to claim (2) are the suction port (25) of the compression means (21) and the discharge port ( 28) are connected to the room, while air pipes (13) and (13) are connected to the discharge port (26) of the compression means (21) and the suction port (27) of the expansion means (22), respectively.
One end of the air pipes (13) and (13) are connected to each other.
The air conditioner is constructed such that the other end thereof is connected to a heat exchanger (12).

(Function) With the above configuration, in the invention according to claim (1), when the driving means (7) is driven, the movable scroll (5) is moved from the center of both fixed scrolls (3) and (4) by the supporting means (6). Since the movable scroll (5) is eccentrically supported and prevented from rotating, the movable scroll (5) is supported eccentrically and is prevented from rotating.
), for (4), the fixed scroll (3),
(4) Performs only orbital motion around the center.

The substrate (51) in this movable scroll (5)
), the compression means (21) is constructed on one side, and the expansion means (22) is constructed on the other side.
) in the compression means (21) due to the revolution of both wraps (
A compression chamber (23) is formed between the wraps (32) and (52) from the outside of the wraps (32) and (52), and contracts while moving to the center, while both wraps (42) in the expansion means (23) ) and (53), an expansion chamber (24) is formed from the center of the wraps (42) and (53), and expands while moving outward.

Due to this compression and expansion action, in the invention according to claim (2), indoor air passes through the suction port (25) and enters the compression chamber (23).
is compressed into high-temperature, high-pressure air and discharged through the outlet (26).
The air is discharged from the heat exchanger (1) via the air pipe (13).
Flows to 2). Thereafter, in the heat exchanger (12), the high-temperature, high-pressure air is cooled by exchanging heat with outside air, etc., and becomes low-temperature, high-pressure air, which is then passed through the air pipe (13) to the expansion means (22).
), the air flows into the expansion chamber (24) through the suction port (27), becomes low-temperature, low-pressure air, and is blown into the room through the discharge port (28).

(Effect of the invention) Therefore, according to the invention according to claim (1), the compression means (21) is formed on one side of the movable scroll (5) and the expansion means (22) is formed on the other side. , the thrust direction of the movable scroll (5) is balanced, and each wrap (32).

(42), (52), (53) substrate (31).

(41), (51) can be significantly reduced, so each wrap (32), (42),
The sliding contact force of ... can be reduced, and the wear of the tip can be reduced.

Furthermore, by balancing the thrust direction force of the revolving scroll (5), friction loss is reduced, maintenance is not required for a long period of time, noise and vibration are reduced, and continuous discharge is possible. Therefore, there is little influence of overcompression, etc., and it is possible to operate compactly and at high speed. Furthermore, the expansion means (2
Since the driving force can be recovered in step 2), the capacity of the driving means (7) can be reduced and energy saving can be achieved.

Furthermore, according to the invention according to claim '2J, since the above-mentioned scroll type fluid device is used, air conditioning operation can be performed continuously with little maintenance, so that a refrigeration cycle that does not use refrigerant can be used comfortably. air conditioning.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

As shown in FIGS. 1 and 2, (1) is an air cycle type air conditioner, which directly compresses and expands air to configure a refrigeration cycle, and a scroll type fluid device (1). ) to the heat exchanger (12) and air piping (13)
, (13).

The scroll type fluid device (1)) has a casing (2)
The first fixed scroll (3) and the second fixed scroll (
4) and a revolving scroll (5) are arranged vertically in parallel, and the casing (2) is formed into a flat rectangular body. The compression means (21) is compressed by the first fixed scroll (3) and the upper half of the revolving scroll (5).
), the second fixed scroll (4) and the lower half of the revolving scroll (5) each constitute an expansion means (22).

Each of the fixed scrolls (3) and (4) has a front surface (the lower surface for the first fixed scroll (3) and the upper surface for the second fixed scroll (4)) of the substrates (31) and (41) formed in a flat plate shape. A first fixed wrap (32) and a second fixed wrap (42) having a spiral shape (involute curve) are vertically arranged.

Each of the boards (31) and (41) is connected to the casing (
2) serves as both an upper surface plate and a lower surface plate, and the first fixed wrap (32) and the second fixed wrap (42) are wound in opposite directions when viewed from the same direction, and each fixed scroll ( 3) and (4) are arranged vertically in parallel with a predetermined interval and their front faces facing each other.

The movable scroll (5) has a first movable wrap (52) and a second movable wrap (53) in a spiral shape (impoly coated curve) on both sides (upper and lower surfaces) of a disk-shaped substrate (51). ) are erected to form a double-toothed scroll, and the movable scroll (5) has a substrate (51) connected to both fixed scrolls (3).

The fixed scrolls (3) and (5) are located between the ends of the wraps (32) and (42) in (4) and are arranged in parallel. The first movable wrap (52) and the second movable wrap (53) are wound in opposite directions when viewed from the same direction, and the first movable wrap (52) and the first fixed wrap (32) are wound in opposite directions. ), and the second movable wrap (5
3) and the second fixed wrap (42) are joined together, and the respective wraps (32), (42), (
52) and (53) are each substrate (3) whose tip surfaces are opposed to each other.
1), (41).

(51). Furthermore, each of the above wraps (32), (42), and (52).

(53) is in multi-point contact on the side between each of the interlocking laps (32), (52) and (42), (53), and the first fixed scroll (3) and the revolving scroll (
Both wraps (
32), while the compression chamber (23) of the compression means (21) is formed by (52), the substrate (41) of the second fixed scroll (4) and the revolving scroll (5),
An expansion chamber (24) of the expansion means (22) is formed between (51) by both wraps (42) and (53).

Further, the movable scroll (5) is supported by the casing (2) by a support means (6), and the movable scroll (5) is supported by the support means (6).
6) is two crankshafts (61), (61)
and two support shafts (62) (62) are provided diagonally at four corners of the casing (2),
A base plate (51) of a movable scroll (5) is connected to each of the shafts (61) and (62). As shown in FIG. 3, each of the above-mentioned shafts (61) and (62) has an eccentric shaft portion (
63), (64) are formed, while the substrates (31), (4) of each fixed scroll (3), (4) forming the upper and lower plates of the casing (2) are formed.
1) has a supporting boss (33).

(43) is formed, and each of the above-mentioned shafts (61).

The upper and lower parts of (62) are bosses (33) and (43).
are fitted and supported via bearings (65), (65), . . . so as to be rotatable in the vertical direction. A movable scroll (5) is attached to the eccentric shaft portions (63) and (64).
four flanges (54) formed on the substrate (51);
(54), ... are rotatably connected via bearings (65), (65), ..., and the movable scroll (5)
The center of the movable scroll (5) is located between both fixed scrolls (
3) and (4), and the movable scroll (5) does not rotate on its own axis and both fixed scrolls (
3) and (4), it is supported so that it only revolves.

Furthermore, the lower end of the crankshaft (61) is extended outside the casing (2), and the crankshaft (61)
A motor (7) serving as a driving means is attached to the lower part of the . The rotor (71) of the motor (7) is attached to the crankshaft (61), while the stator (72) is attached to the motor case (73).
73) is fixed to the lower surface of the casing (2), and the motor (7) is configured to revolve the movable scroll (5).

Meanwhile, inside the casing (2), a substrate (31) for the first fixed scroll (3) and the revolving scroll (5),
(51) A substrate (41) between and between the second fixed scroll (4) and the revolving scroll (5).

(52) A cylindrical partition (2a) between each wrap (32)
, (42), .
It forms the outer peripheral wall of. And the compression means (2■)
The suction port (25) is connected from the side of the casing (2) to the bulkhead (
2a) and is formed over the inner surface of the discharge port (26).
) is formed in the center of the mounting plate (31) of the first fixed scroll (3). Further, the expansion means (22) has a suction port (27) connected to the substrate (41) of the second fixed scroll (4).
), and a discharge port (28) is formed extending from the side surface of the casing (2) to the inner surface of the partition wall (2a).

Further, the suction port (25) of the compression means (21) and the discharge port (28) of the expansion means (22) are communicated with the interior of the room, while the discharge port (26) of the compression means (21) and the discharge port (28) of the expansion means (22) are communicated with each other.
The air pipe (13) is connected to the suction port (27) of 22).
(13) is connected to one end of each air pipe (13).
B), the other end of (13) is connected to the heat exchanger (12).

Next, the air conditioning operation of this air conditioner (1) will be explained.

First, the compression and expansion operations of the scroll-type fluid device (1) will be explained based on FIGS. 4 and 5.

both motors (7) of the scroll-type fluid device (1));
When (7) is driven, the crankshaft (61), <
61) rotates, and the movable scroll (5) supports the support means (6
) to prevent rotation, while both fixed scrolls (3
), (4), the fixed scrolls (3), (4) only revolve around them.

This revolution of the movable scroll (5) causes the compression means (2
1), FIGS. 4(a) and (b).

As shown in (c) and (d), the first movable knob (
52) rotates clockwise, a compression chamber (23) is formed from the outer peripheral end (end of winding) of both wraps (32) and (52), and the compression chamber (23> is directed toward the center (starting end of winding). It contracts while moving in a spiral shape, and communicates with the discharge port (26) from the inner peripheral end (winding start end) of the side knobs (32), (52).

On the other hand, at the same time, in the expansion means (22), as shown in FIG.
), (b), (c), and (d), the first movable wrap (53) rotates to the left and both wraps (42
), (53) from the inner peripheral end (winding start end) of the expansion chamber (2
4) is formed, and the expansion chamber (24) or the outside (winding end)
It expands while moving in a spiral shape toward the above-mentioned both wraps (4
2), the discharge port (
28).

The air conditioning operation will be explained based on the compression and expansion operations of this scroll type fluid device (1).

First, indoor air flows into the casing (2) through the suction port (25) by driving the compression means (21), and then flows into the compression chamber (23) from outside of both wraps (32) and (52). The indoor air is compressed in the compression chamber (23) to become high-temperature, high-pressure air, which is discharged from the discharge port (26), flows through the air pipe (13), and flows into the heat exchanger (12).

Thereafter, the high-temperature, high-pressure air is cooled by exchanging heat with outside air or the like in a heat exchanger (12), and becomes low-temperature, high-pressure air. continue,
This low-temperature, high-pressure air flows through the air pipe [13], is guided to the expansion means (22), flows into the casing through the suction port (27), and enters the expansion chamber ( 24). The low-temperature, high-pressure air expands within the expansion chamber (24) to become low-temperature, low-pressure air, which is blown out from the discharge port (28) as conditioned air.

This air cycle is repeated to condition the air in the room.

Therefore, according to this scroll type fluid device (1)),
Since the compression means (21) is configured on one side of the movable scroll (5) and the expansion means (22) is configured on the other side, the thrust direction force (vertical force) of the movable scroll (5) is balanced. Therefore, each lap (32),
(42), (52), (53) substrate (31),
(41), (51) can be significantly reduced, so each wrap (32), (42),
The sliding contact force of ... is reduced, and the wear of the tip can be reduced.

Furthermore, by balancing the thrust direction force of the revolving scroll (5), friction loss is reduced, maintenance is not required for a long period of time, noise and vibration are reduced, and continuous discharge is possible. Therefore, there is little influence of overcompression, etc., and it is possible to operate compactly and at high speed. Furthermore, the expansion means (2
Since the driving force can be recovered in step 2), the capacity of the motor (7) can be reduced and energy savings can be achieved.

Furthermore, according to the above-mentioned air conditioner (1), since the above-mentioned scroll-type fluid device (1)) is used, air conditioning operation can be performed continuously with little maintenance, so refrigeration without using refrigerant is possible. Comfortable air conditioning can be achieved through cycles.

In this embodiment, an air cycle type air conditioner (1) has been described, but the scroll type fluid device (1)) of the present invention may be applied to other devices.

In addition, although the air conditioner (1) of this embodiment directly sucks indoor air and blows it out directly into the room, the compression means (1)
The suction port (25) of 21) and the discharge port (28) of the expansion means (22) may be connected to an indoor heat exchanger or the like to cool the secondary air or the like.

Further, the supporting means (6) is not limited to the one in the embodiment, and may be any means as long as it supports the movable scroll (5) eccentrically and so as not to rotate.

Further, although two motors (7), (7) are used as the driving means, one motor (7) may be used and connected to the other crankshaft (61) by a belt or the like.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a configuration diagram of an air conditioner showing a scroll-type fluid device in cross section, FIG. 2 is a cross-sectional plan view of the scroll-type fluid device, and FIG. FIG. 3 is a cross-sectional side view showing the support shaft. Figure 4(a)
, (b), (c). (d) is an explanatory diagram showing the compression operation of the compression means, and FIG.
), (b), (c), and (d) are explanatory views showing the expansion operation of the expansion means. (1)...Air conditioner (2)...Casing (3), (4)...Fixed scroll (5)...
Movable scroll (6)...Support means (7)...Motor (1))...Scroll type fluid device (12)...Heat exchanger (13)...Air piping (21)...・Compression means (22)...Expansion means (25), (27)...Suction port (26), (2g)...Discharge port (31), (41), (51)...Substrate (32), (
42), (52), (53)...Wrap patent applicant Daikin Industries, Ltd. Two idiots (1)・Air jlI#rIsIM (2)・Casing+31. (4) ・Fixed scroll (5)・Movable scroll (6) ・Support means (7) ・Motor (1) 1 ・Scroll body tag (12) ・・
Heat exchanger IIIM (13)...Air distribution (21)/Pressure hand (22)--1) G1 means (25), +27)...Intake port (26), (28) -Discharge port (31) ), (41), (51) ・Substrate (32), (
42), (52), (53)・Lap Fig. 5 Fig.

Claims (2)

[Claims] (1) A spiral first fixing wrap (
32) and a second fixed scroll (4) having a spiral second fixed wrap (42) erected on the front surface of the substrate (41) at a predetermined interval. A movable scroll comprising a first movable wrap (52) and a second movable wrap (53) in a spiral shape, which are arranged side by side with their front faces facing each other, and which are erected on both sides of a substrate (51). (5) connects the first movable wrap (52) to the first fixed wrap (32) and the second movable wrap (53) to the second fixed wrap (42) between the fixed scrolls (3) and (4). They are arranged side by side in mesh with each other, and the center of the movable scroll (5) is connected to both fixed scrolls (5).
3), eccentric from the center of (4) and movable scroll (5
) is provided with support means (6) that supports the movable scroll (5) so that it revolves without rotating, and
A driving means for revolving the movable scroll (5) (
7) are provided, the first fixed scroll (3) and the movable scroll (5).
A suction port (25) is opened on the outside of both wraps (32) and (52), and a discharge port (26) is opened in the center between the wraps (32) and (52), and the fluid flowing in from the suction port (25) is passed between both wraps. wrap(
32) and (52), a compression means (21) is configured between the second fixed scroll (4) and the movable scroll (5).
A suction port (27) is opened in the center of both wraps (42) and (53), and a discharge port (28) is opened on the outside between the wraps (42) and (53). wrap(
A scroll-type fluid device characterized in that an expansion means (22) is configured to expand between 42) and 53. (2) The suction port (25) of the compression means (21) and the expansion means (2) in the scroll-type fluid device according to claim (1).
The discharge ports (28) of the compression means (21) and the expansion means (2) are respectively communicated with the room.
Air piping (13) to the suction port (27) of 2),
(13), one end of which is connected to both air pipes (13),
(13) An air conditioner characterized in that the other ends are each connected to a heat exchanger (12).