JPH074879U - Compressor drive - Google Patents

Abstract

(57) [Summary] [Object] To provide a compressor drive device which has a simple structure and does not increase the size of the entire device even when a plurality of compressors are provided. When the engine 1 operates, the power of the engine 1 is transmitted to the ring gear 3 via the gear 4, each gear 8 and the internal gear 5a, and the power transmitted to the ring gear 3 is transmitted to the internal gear 3a of the ring gear 3 and the internal gear 3a. It is transmitted to each compressor 2 via each gear 7. With this configuration, each compressor 2 is arranged around the rotation axis of the engine 1, and the internal gear 3a of the ring gear 3 is engaged with the gear 7 of each compressor 2 as a common gear. It doesn't get complicated. Further, since the gears 7 of each compressor 2 are arranged on the same plane, the dimension in the axial direction does not change even if the number of the compressors 2 increases.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a compressor drive device used in an air conditioner or the like in which a compressor of a heat pump circuit is driven by an engine, for example.

[0002]

[Prior art]

 Conventionally, a compressor of an air conditioner is generally driven by an electric motor, but in a relatively large air conditioning facility, a compressor in which the compressor is driven by an engine is also known. In such a compressor drive device, pulleys are attached to the rotary shafts of the compressor and the engine, and power is transmitted by connecting each pulley with a belt.

[0003]

[Problems to be solved by the device]

 By the way, since a compressor driving device using an engine can obtain a relatively large driving force, it is possible to drive a plurality of compressors with one engine. However, in the conventional structure in which the compressor and engine are connected using pulleys and belts, pulleys and belts are required for each compressor in order to distribute the engine power to each compressor. Therefore, there is a problem that the structure becomes complicated and that the larger the number of compressors, the larger the entire apparatus.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a compressor having a simple structure and not increasing the size of the entire apparatus even when a plurality of compressors are provided. It is to provide a drive device.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a compressor drive device in which a plurality of compressors are connected to one prime mover and each compressor is driven by the power of the prime mover. In addition to being arranged around the axis, gears attached to the rotary shaft of each compressor are arranged on the same plane, and a common gear rotated by the prime mover is engaged with each gear.

[0006]

[Action]

 According to the compressor drive device of the present invention, since a plurality of compressors are arranged around the rotation axis of the prime mover and the gears of the compressors are engaged with the common gear, the structure becomes complicated. There is no such thing. Further, since the gears of each compressor are arranged on the same plane, the axial size does not change even if the number of compressors increases.

[0007]

【Example】

 1 to 6 show an embodiment of the present invention. FIG. 1 is an exploded perspective view of a compressor drive device, FIG. 2 is an exploded side view thereof, and FIG. 3 is a side view showing its assembled state. . This compressor drive device includes one engine 1 that forms a prime mover, a total of four compressors 2 that are driven by the engine 1, and a ring gear 3 that is rotated by the engine 1.

A rotary shaft 1a that outputs power is projected from one end of the engine 1, and a gear 4 is attached to the rotary shaft 1a. A fixed gear plate 5 having a cylindrical opening at the center is attached to the engine 1, and an internal gear 5a is formed on the inner peripheral surface of the opening. Supporting pieces 5b for supporting the compressors 2 are provided on the left and right sides of the fixed gear plate 5.

Each compressor 2 is arranged around the rotation axis of the engine 1 and attached to a mounting plate 6 formed in a disc shape. The rotary shaft 2a of each compressor 2 penetrates through the mounting plate 6 and projects to the engine 1 side, and a total of four gears 7 arranged on the same plane are mounted on each rotary shaft 2a. There is. Mounting pieces 6a are provided on the left and right sides of the mounting plate 6, and the mounting pieces 6a are fixed to the support pieces 5b of the fixed gear plate 5 with bolts or the like.

The ring gear 3 is formed of a tubular member having one end closed, and an internal gear 3a is formed on the inner peripheral surface thereof. A total of four support shafts 3b protruding toward the engine 1 are provided at one end of the ring gear 3, and a total of four gears 8 are attached to each support shaft 3b.

In the above structure, as shown in FIG. 3, the gear 4 of the engine 1 is arranged at the center of the internal gear 5a of the fixed gear plate 5, and the ring gear is provided between the gear 4 and the internal gear 5a. Each gear 8 of No. 3 is arranged in a planetary shape and is engaged with the gear 4 and the internal gear 5a. Gears 7 of each compressor 2 are arranged inside the ring gear 3, and each gear 7 is engaged with a common gear, that is, an internal gear 3 a of the ring gear 3.

As a result, when the engine 1 is operated, the power of the engine 1 is transmitted to the ring gear 3 via the gear 4, each gear 8 and the internal gear 5a as shown in FIG. Power is transmitted to each compressor 2 via the internal gear 3a of the ring gear 3 and each gear 7. Specifically, as shown in FIG. 5, when the gear 4 rotates, each gear 8 rotates while meshing with the internal gear 5a, so that each gear 8 moves in the circumferential direction around the rotation shaft 1a of the gear 4. As a result, as shown in FIG. 5, the ring gear 3 is rotated by the power transmitted to the support shaft 3b of each gear 8, and the gear 7 of each compressor 2 meshing with the internal gear 3a of the ring gear 3 is rotated. ing.

As described above, according to the compressor driving device of the present embodiment, each compressor 2 is arranged around the rotation axis of the engine 1, and the gear 7 of each compressor 2 has the internal gear 3 a of the ring gear 3. Since the gears are engaged as a common gear, the structure is simplified, and the cost can be reduced and the maintainability can be improved. Further, since the gears 7 attached to each compressor 2 are arranged on the same plane, the dimension in the axial direction does not change even if the number of compressors 2 increases, and the overall size of the device can be reduced. Further, in the above configuration, since the gears 4, 7, 8 are covered by the opening portions of the ring gear 3 and the fixed gear plate 5, the gears 4, 7, 8 are sufficiently protected from the outside without a separate casing or the like. be able to. Further, since the ring gear 3 has a shape in which the weight is biased toward the peripheral side, it also has a function as a flywheel. By intentionally utilizing this, it is possible to reduce the number of parts on the engine 1 side. is there.

In the above embodiment, the internal gear 3a of the ring gear 3 is shown as a common gear that engages with the gear 7 of each compressor 2, but this is a gear arranged in the center of each gear 7. May be. For example, the ring gear 3, the gear 8 and the fixed gear plate 5 may be omitted, and the gear 4 on the engine 1 side may be directly engaged with each gear 7. Further, in the above embodiment, each compressor 2 is driven by the engine 1, but a motor may be used as a prime mover.

[0015]

[Effect of device]

 As described above, according to the compressor drive device of the present invention, since the structure can be simplified, the cost can be reduced and the maintainability can be improved, and the number of compressors can be reduced. Since the axial size does not change even if the number of devices increases, it is possible to reduce the size of the entire device.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a compressor driving device according to an embodiment of the present invention.

FIG. 2 is an exploded side view of a compressor drive device.

FIG. 3 is a side view showing an assembled state of the compressor drive device.

FIG. 4 is a schematic configuration diagram showing a power transmission system.

FIG. 5 is an operation explanatory view showing a main part of a compressor drive device.

FIG. 6 is an operation explanatory view showing a main part of a compressor drive device.

[Explanation of symbols]

1 ... Engine, 1a ... Rotating shaft, 2 ... Compressor, 2a ... Rotating shaft, 3a ... Internal gear, 7 ... Gear.

Claims (1)

[Scope of utility model registration request] 1. A plurality of compressors are connected to one prime mover,
In a compressor drive device that drives each compressor by the power of the prime mover, each compressor is arranged around the rotation axis of the prime mover, and gears attached to the rotary shaft of each compressor are on the same plane. A compressor drive device, wherein the gears are arranged and a common gear rotated by a prime mover is engaged with each gear.