CN1749529A

CN1749529A - Rotary fluid machinery

Info

Publication number: CN1749529A
Application number: CNA2004100787259A
Authority: CN
Inventors: 柳泽健; 藤冈完
Original assignee: Anest Iwata Corp
Current assignee: Anest Iwata Corp
Priority date: 2004-09-17
Filing date: 2004-09-17
Publication date: 2006-03-22
Anticipated expiration: 2024-09-17
Also published as: CN100351494C

Abstract

The helical fluid machine includes one orbital volute and one fixed volute. The orbital volute is driven with one driving shaft and has one orbital volute contact angle. The fixed volute has one fixed volute contact angle. When the orbital volute on the driving shaft rotate eccentrically relatively to the fixed volute, the orbital volute contact angle and the fixed volute contact angle joint to form one expansion part. The expanding and cooling fluid flows from the expansion part to one circular path around the motor to cool the motor effectively.

Description

Rotary fluid machinery

Technical field

The present invention relates to a kind of rotary fluid machinery, described rotary fluid machinery comprises a compression member and a dilation, and the present invention especially relates to and a kind ofly is used for that air sent into fuel cell and from the rotary fluid machinery of fuel cell exhaust air.

Background technique

In a kind of fuel cell, between an anode and a negative electrode, electrolyte is arranged, and hydrogen is delivered to negative electrode as active material of cathode.Become hydrogen ion at the negative electrode place by its hydrogen atom of taking electronics away, described hydrogen ion arrives anode by electrolyte flow.Oxygen is to deliver to anode as active material of positive electrode, and by the electronics of an external circuit reception from negative electrode, forms water so that allow hydrogen ion and oxygen react.Therefore electronics flows to anode from negative electrode, and perhaps an electric current flows to negative electrode from anode.Generally be to deliver to anode,, on anode, exist as the unreacted oxygen and the nitrogen of air main component so that except water with containing the oxygen air.The chemical combination of hydrogen and oxygen is exothermic reaction, and its temperature rises from air supplied.Nitrogenous gas as main component will be from anode exhaust.

To deliver to anode by the air of a compressor pressurizes, and the gas at the anode place has and is higher than atmospheric pressure.If gas release in air, then it will become do not have the acting situation under lose.The energy of gas is regained by an expander.Therefore, fuel cell can preferably have a compressor and an expander.

The U.S. Pat 6,506 of people such as Mori application, 512B1 discloses a kind of compression type regeneration machinery, and described compression type regeneration machinery is used for a kind of fuel cell as the fluid machinery with compressing mechanism and regeneration sector.Rotary fluid machinery has a track spiral case, and each side of described track spiral case all has a spiral case cornerite, the liquid that the compression of spiral case cornerite sucks, and another spiral case cornerite makes the fluid expansion of suction so that acting.

In compression type regeneration machinery, the fluid that expansion and temperature descend in a regeneration room makes the track volute cooling in the regeneration room, and fluid expand into circumference from the center.Yet, do not consider motor that is used for the drive track spiral case of cooling.Therefore, a little space as a car engine unit room with external isolation in, temperature on every side raises and causes the long-time running of very poor thermal radiation and the temperature of motor is raise, thereby has reduced its life-span.In addition, motor have comprise to around the noise that has a negative impact.

Summary of the invention

In view of the foregoing, the purpose of this invention is to provide a kind of rotary fluid machinery, described rotary fluid machinery has a compression member and a dilation at the place, both sides of a track spiral case end plate, be applied in the fluid that temperature reduces when expanding in the dilation and cool off a motor effectively, prevented the noise in the motor simultaneously.

According to the present invention, a kind of rotary fluid machinery is provided, described rotary fluid machinery comprises a live axle: the track spiral case with a track spiral case cornerite; One has the fixing fixedly spiral case of cornerite; And motor that is used to drive live axle, above-mentioned track spiral case is by drive shaft, and with respect to fixedly spiral spare eccentric rotation, and above-mentioned track vortex cornerite engages so that produce a dilation with fixing spiral cornerite, it is characterized in that: dilation externally portedly is communicated with a circumferential route by one, and above-mentioned circumferential route centers on motor between an inner peripheral wall and outer circle wall.

Description of drawings

Fig. 1 is a kind of vertical sectional view according to rotary fluid machinery first embodiment of the present invention;

Fig. 2 is the vertical sectional view of being done along Fig. 1 middle conductor II-II, removes its an auxiliary crank axle and bearing simultaneously;

Fig. 3 is the vertical sectional view of being done along Fig. 1 middle conductor III-III;

Fig. 4 is a kind of vertical sectional side view according to rotary fluid machinery second embodiment of the present invention; And

Fig. 5 is a kind of vertical sectional side view according to rotary fluid machinery the 3rd embodiment of the present invention.

Embodiment

Fig. 1 illustrates according to a kind of rotary fluid machinery first embodiment of the present invention, and above-mentioned rotary fluid machinery comprises a spiral case part 10 and a motor 20.Track spiral case cornerite 1c is arranged on the both sides of a track end plate 1b of a track spiral case 1 behind preceding track spiral case cornerite 1a and one.Fixedly on the fixed charge method end plate 2b of spiral case 2, be provided with a front fixedly spiral case cornerite 2a and an annular space wall 2c a front, above-mentioned front fixedly spiral case cornerite 2a engages with front rail spiral case cornerite 1a.Back fixedly spiral case 3 has an outer circle wall 3d and a fixed charge method end plate 3b, and back that engages with rear track spiral case cornerite 1c fixedly spiral case cornerite 3a is arranged on the said fixing end plate 3b.Outer circle wall 3d is fixed to the front fixedly on the fixed charge method end plate 2b of spiral case 2.Front fixedly spiral case cornerite 2a and front rail spiral case cornerite 1a constitutes a compression member, and back fixedly spiral case cornerite 3a and dilation of rear track spiral case cornerite 1c formation.Fixedly the belt spacing wall 2c of spiral case end plate 2b is spaced apart by the front for compression member and dilation.

Bolt 26 of motor 20 usefulness is fixed to the back fixedly on the spiral case end plate 3b.Fixedly spiral case end plate 3b and a bonnet 25 are bearing in

axle journal

21a, 21b place to a live axle 21 of motor 20 by the back by bearing 22,23.A Sealing 12 divides the center of compression part with motor seal in volute section.

An eccentric part 21c at live axle 21 front end places is supported by a bearing 4, and described bearing 4 is in an axle sleeve 1d supporting of center, track spiral case rear surface.

In the outer circumference of track spiral case 1,3 axle sleeve 1e stretch out at the place, 3 summits of an isosceles triangle.The cam pin 5b of an auxiliary crank 5 is supported by axle sleeve 1e by a bearing 6b.By the rotary front that is bearing in of axle sleeve 2e fixedly on the outer periphery of spiral case end plate, these prevent the rotation on its axle of track spiral case to an axle journal 5a of auxiliary crank 5 by a bearing 6a.

Live axle 21 equals the degree of eccentricity of auxiliary crank cam pin 5b with respect to an axis of axle journal 5a with respect to the degree of eccentricity of an axis of eccentric part 21c.Therefore, when live axle 21 rotations, track spiral case 1 is around the axis rotation of live axle 21.Rotating machinery can be a kind of known Euclidean (O1dham) shaft coupling.

Label

21d, 5c are elastic rings.When an interior ball of bearing unclamps from cam pin, so that the bearing 4 of track spiral case can be inserted cam pins 21 time, elastic ring 21d prevents to corrode owing to interior ball rotates to pin.For example, when a kind of elastic ring such as rigidity rubber were assembled in the groove of cam pin, elastic material had reduced at the resistance of interior ball between erecting stage, and its rubbing action prevent in ball on cam pin, rotate.

Elastic ring 28 can make the cam pin 5b of auxiliary crank 5 insert among the bearing 6b of track spiral case 1, and prevents that the interior ball of bearing 6a from sliding.

In Fig. 2, one of compression member inlet 7 fixedly forms on the fixed charge method end plate 2b of spiral case 2 in the front between annular space wall 2c and the spiral case cornerite outer periphery, and an outlet 8 is to form in the center, and

pipeline

7a and 8a are connected respectively in inlet 7 and the outlet 8.The fluid of suction inlet 7 compresses towards central direction by the rotation of track spiral case, and discharges from exporting 8.

In Fig. 3, inlet 9 that is used for compression member in the back fixedly the outermost of spiral case 3 part form, and by the back fixedly the radial track 9a of spiral case end plate 3b be communicated with an opening 9b.A pipeline 9a is connected on the opening 9b.The fluid that enters towards the compression member center from opening 9b is along with the rotation of track spiral case is outwards expanded; Fixedly export in the 11 introducing motors inside of spiral case end plate by the back; And after cooling armature etc., export 27 and be discharged into the outside from one.

In Fig. 1, dilation is communicated with a circumferential route 31 by one externally ported 30, and above-mentioned circumferential route 31 forms between an inner peripheral wall 32 and an outer circle wall 33.Motor 20 usefulness flow through the fluid cooling of circumferential route 31.Motor 20 spills from a hole 27 at the noise of run duration, but owing to outer circle wall 33 is prevented from.

Fig. 4 illustrates the second embodiment of the present invention.Adopt those identical labels among first embodiment with Fig. 1, and omit explanation them.To different places only be described.

Outer circle wall 33 ' outer radial after increase gradually, and circumferential route 31 ' sectional area increase gradually.Therefore circumferential route 31 ' in fluid reduce pressure gradually backward and cool off.Motor 20 and its each parts are cooled off effectively by fluid.

Fig. 5 illustrates the third embodiment of the present invention.Adopt those identical labels among first embodiment with Fig. 1, and omit explanation them.To different places only be described.

Spirality wall 35 is arranged between an inner peripheral wall 32 and the outer circle wall 33 around motor 20, and a spiral routes 34 is limited by spirality wall 35.The pitch of spirality wall 35 increases backward, and therefore the fluid that comes out from dilation reduces pressure gradually backward by one externally ported 30 and cools off.

Fluid cools off a motor 20 and its each parts effectively, and prevents noise by outer circle wall 33.

In the 3rd embodiment, the external diameter of outer circle wall 33 can with outer circle wall 33 among second embodiment ' increase backward in the same manner.

Claims

1. rotary fluid machinery comprises:

A live axle (21);

A track spiral case (1), described track spiral case (1) has a track spiral case cornerite (1c);

A fixing spiral case (3), described fixedly spiral case (3) has a fixedly cornerite (3a); With

A motor (20), described motor (20) is used to drive live axle (21), and rotates prejudicially with respect to fixing spiral case (3), and track spiral case cornerite (1c) engages with fixing spiral case cornerite (3a) simultaneously, so that produce a dilation, it is characterized in that:

Dilation is communicated with a circumferential route (31) by an outside outlet (30), and above-mentioned circumferential route (31) centers on motor (20) between an inner peripheral wall (32) and an outer circle wall (33).

2. rotary fluid machinery as claimed in claim 1 wherein, little by little increases behind the outer radial of outer circle wall (33 ').

3. rotary fluid machinery as claimed in claim 1 or 2, wherein, circumferential route comprises a helical path (34), described helical path (34) is limited by a spirality wall (35), and above-mentioned spirality wall (35) forms between interior and outer circle wall (32) and (33) spirally around motor (20).

4. rotary fluid machinery as claimed in claim 3, wherein, spirality wall (35) increases backward gradually.