JPS58206891A - Compressor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a compressor with a reciprocating piston that is particularly suitable for installation in heavy vehicles, among other possible uses.

This type of compressor consists of a housing having a hole therein, a piston fitted reciprocally into the hole and cooperating with the housing to define a working chamber, an inlet port and an outlet 1. a head provided with a port; the head is interposed between the housing and the head, and is configured to allow fluid to flow into the working chamber from the inlet port in response to movement of the piston in one direction; and a valve device that allows outflow from the outlet port.

In the prior art, compressor control valves were separate components that required individual installation. This kind of device is
For example, U.S. Pat.
No. 417,246. Given the current economic situation, where efficiency is often the difference between success and failure,
Compressors of this type are expensive to manufacture and are too expensive for many users.

In view of the above, an object of the present invention is to expand the field of application of this type of compressor by making it easy to disassemble for maintenance and replacement without impairing operational reliability, and significantly reducing manufacturing costs. That's true.

It is an object of the invention to provide a valve arrangement for a compressor of this type comprising a valve plate having an inlet opening and an outlet opening connecting the working chamber to the inlet and outlet ports, and cooperating with the valve plate and the head. a reed device comprising a metal material having a plurality of reeds for controlling the flow of fluid through the inlet and outlet openings and having a gasket material printed thereon; and a fastening device for aligning and holding the
achieved. Such reed devices are easy to manufacture and inexpensive to manufacture, and also allow fastening devices, such as bolts, to properly align the various reeds over the inlet and outlet openings formed in the valve plate. Therefore, reliable operation can be realized.

In a preferred embodiment of the invention, the valve device comprises a plunger or a piston having a pressure receiving surface receiving the fluid pressure of the stored compressed fluid, at least one projection extending towards the reed device, an elastic device that biases the piston away from the reed device, and fluid pressure of the stored compressed fluid acts on the pressure receiving surface of the piston to overcome the elastic device and move the piston. The inlet lead is displaced so that the working chamber is continuously connected to the inlet port. Thereafter, no supply of compressed fluid to the reservoir takes place, and the work required to move the pistons in their cooperating bores is significantly reduced.

The above-mentioned advantages and features of the invention as well as other advantageous features will become apparent from the following description of an illustrated embodiment of the invention.

The compressor 10 shown in FIG. 1 has a crank 12 with a chamber 14 therein. Cylindrical members or sleeves 16 and 18 fit into openings 20 and 22 in crank 12. The crankshaft 24 is journalled at its first end 26 in a bearing 28 held within an end plate 30 of the crank 12, and at its second end 30.
4 extends through the end plate 32. The end plate 32 is configured to rotate even at the second time. As an alternative construction, the cylindrical members 16 and 18 may be conventional cylindrical holes formed integrally with the crank.

Pistons 38 fitted within cylindrical members 16 and 18, respectively
and 40 are connected to crankshaft 24 by rods 42 and 44. The pistons 38 and 40 are
They are attached to the crankshaft 24 with a 180° phase difference so that when one is at the upper end of the stroke, the other is at the lower end.

A gasket 48 is interposed between the ends of the cylindrical members 16 and 18 and the valve plate 54.

The valve plate 54 has inlet openings 56 and 58 for one working chamber 17 and outlet lowers 2 and 74 for the other working chamber 19, as best shown in FIG. It has inlet openings 60 and 62 and outlet openings 60 and 78. The valve plate 54 has an inlet opening 56. ．． 58 and 60, 62
It has a flat shape except for inclined surfaces 64 and 66 provided adjacent to it. The slopes 64 and 66 are the ridgeline 68
and 70 to the stop 80 and 8-2.

A press-formed flat reed device or reed valve 84 is integrally formed of metal material and includes a peripheral surface 86 that matches the contour of the valve plate 54, inlet flaps or leads 88 and 90, and an outlet flap or lead 92. and 94. During manufacturing, gasket material 95 is printed onto the metal material forming reed valve 84.

A retainer 96 attached to the valve plate 54 by bolts 98 and 100 connects the outlet flaps or leads 92 and 94.
It has projections or arms 102 and 104 as stop members extending upwardly to limit displacement of these leads.

A head 106 mounted on the reed valve 84 connects the passage 11
0 and an inlet port 108 communicating with chamber 112. The boundary of the chamber 112 is the sealing surface 11 on the reed valve 84.
4.115.117.119 and 121 are the heads 106
limited by engagement with. As shown in FIG. 3, for chamber 17, an inlet flat, plate or lead 88 extends beyond sheet 116 surrounding opening 118. As shown in FIG.

Similarly, the inlet flap or IJ-door 90 has an opening 122
extending beyond the sheet 120 surrounding the chambers 112 to 19
Control fluid communication to.

The head 106 has a hole 1 connected therein to a chamber 112.
It has 24. An unloader mechanism 123 including a piston 126 is disposed within the bore 124 and cooperates with the head 106 to define a chamber 128 within the bore 124 . Passage 125 is connected to a conventional control device such that when the pressure level within the reservoir reaches a set point, chamber 128
transmits pressure signals to. Seal 13 on piston 126
0 prevents communication between chambers 128 and 112.

A spring 132 disposed between the bottom 134 of the bore 124 and the retainer 136 and positioned at the post 127 at the end of the piston 126 urges the end 138 of the piston against the stop member 140. Retainer 136 includes first and second projections 142 and 144 that extend through slots or holes 146 and 148 and are located on flaps or leads 88 and 90.

Additionally, as shown in FIG. 3, the head 106 has a passageway 150 with a port 152 that connects to a storage container.

Head 106 engages gasket material 154 printed on the metal material of reed valve 84, thereby causing
Passageway 150 is isolated from chambers 1, 12 and the outside environment.

Natsuto 156.156! ...156N (only two of -t are shown) and head bolt 158.1
58', 158"...158N (three of which are shown), the head 106 is connected to the housing 12.
installed on. headpol) 158, 158
/, 158"...158N protrude from the housing 12 to connect the inlet flaps or leads 88 and 90, and d
Outlet flaps or leads 92 and 94 are located in chambers 17 and 19.
Align the valve plate 54 with the reed device 84 and head 106 so that the reed device 84 and head 106 are located over the inlet/outlet opening of the valve plate 54 .

The operation of the compressor described above is as follows.

When rotational torque is applied to crankshaft 24 from end 34, pistons 38 and 40 move within chambers 17 and 19. Pistons 38 and 40 are connected to crankshaft 24 such that when piston 38 is at the lower end of its stroke, piston 40 is at the upper end of its stroke, and vice versa.

When piston 38 is moving through its downward stroke, air from inlet port 108 and air present in chamber 112 causes flap or reed 88 to move away from ramp 64 and inlet opening 56 in valve plate 54. and 58 to allow air to flow into the chamber 17. At the same time, a flap or lead 92 is drawn against the valve plate 54 to seal the outlet lowers 2 and 74 to the passageway 150.

Also, at this time, piston 40 is on its upward or compression stroke, forcing air within chamber 19 through openings 78 and 78 into passageway 150. On the upward stroke of piston 40, flap or lead 90
0 to prevent air or fluid from flowing from chamber 19 into chamber 112 , while flap or lead 94 leaves valve plate 54 free from chamber 19 through opening allo and 78 to passageway 150 . Allow communication.

At the end of a half cycle of operation, pistons 38 and 40 move in reverse, with piston 40 moving downward.

After the storage container has been supplied with compressed air for a while, the pressure level in the container reaches the set value. After this set pressure is transmitted from the control device to the chamber 128 by the passage 125 and acts on the piston 126 and the spring 132 is overcome,
The same piston moves.

As piston 126 moves, projections 142 and 144 also move through openings or slots 146 and 148 and engage flaps or leads 88 and 90. piston 1
26 continues to move until its end 127 abuts the bottom 134 of the hole 124. When the piston 126 reaches the trundle position, the flaps or leads 88 and 90 align with the ramped surface 64.
and 66. Thereafter, even if pistons 38 and 40 move on their compression strokes, chambers 17 or 19
The air inside does not flow into the outlet passage 150 but returns to the chamber 112. As a result, the input required to rotate crankshaft 24 is reduced because the air is not compressed and energy is conserved.

As the compressed air within the storage container decreases, the pressure level within the container decreases. At a certain pressure level, the controller forces the valve to open and remove the trapped air within chamber 128. Thereafter, spring 132 causes piston 126 to move, causing flaps or leads 88 and 90 to reseat seats 116 and 120. Then, when the piston 38 and 40 force are moved toward the ball head 106,
The air in chambers 17 and 19 will be compressed. This compressed air flows through outlet flaps or leads 92 and 94 into passageway 150 and is further supplied to a storage container. When the fluid pressure in the storage vessel rises to a set level,
Piston 126 moves again to overcome spring 132 and open inlet flaps or reeds 88 and 90. In this way, the compressor operates only when the fluid pressure within the storage vessel is below a set level.

The ramps 64 and 66 of the air intake into the chambers 17 and 19 or supporting the leads 88 and 90 reduce the flexing of the hinged portions integrally formed in the leads themselves. This increases the durability of lead device 84. If it becomes necessary to replace the lead device 84, replace the head nuts 156, 156/...156.
It is only necessary to remove the N and head 106. Thereafter, retainer 96 and lead device 84 are removed. Pol) 1
A retainer 96 is attached to the new lead device 84 placed on 58, 158'...158N. These head bolts align inlet flaps or leads 88 and 90 and outlet flaps or leads 92 and 94 over the openings in valve plate 54. After that, the head 106 is pol l-158
゜158ノ... placed on 158N, nut 156,
156'...156N is tightened, and the lead device 8
4 exchange is completed.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a compressor showing an embodiment of the present invention, Fig. 2 is a perspective view showing the relationship between the door device, valve plate, and gasket material shown in Fig. 1, and Fig. 3 is a sectional view of the compressor shown in Fig. 1. FIG. 3 is a sectional view taken along line 3-3. 12...Housing, 17.19...Working chamber, 38°4
0- Piston, 541 Valve plate, 84 Reed device,
106...Head.

Claims (1)

[Claims] 1. A housing (12) having a hole therein, and a housing (12) fitted in the hole so as to be able to reciprocate and cooperate with the housing to open an operating chamber (17, 19). Limit piston (38,40
), allowing fluid to flow into the inlet port (108) and the outlet working chamber, and allowing compressed fluid to flow out from the working chamber to the outlet port in response to movement of the piston in the other direction. a valve plate having an inlet gap (56, 58) and an outlet opening (72, 74) connecting the working chamber to the inlet and outlet ports; (54) and a plurality of leads (88, 90, 92, 94) that cooperate with the valve plate and head to control fluid flow through the inlet and outlet openings.
) and having a gasket material (95) printed thereon, a fastening device (158) for aligning and holding the reed device, valve plate, and head with respect to the housing. ...158N). 2. The valve plate (54) is connected to each inlet opening (56, 58, 6
θ, 62), and includes an inclined surface (64, 66) that supports the lead (88, 90) while fluid is flowing into the working chamber. A compressor according to claim 1. 3. A stop member (102, 104) mounted on the valve plate to limit the displacement of the outlet lead (92, ? 94) when the valve device is forced to exit the compressed fluid from the working chamber. A compressor according to claim 1 or 2, characterized in that the compressor comprises: 4. The head opens the inlet openings (56, 58, 60) when compressed fluid is allowed to flow out of the working chamber.
, 62) to close the inlet leads (88, 90).
4. Compressor according to claim 1, 2 or 3, characterized in that it comprises a seat (116, 12o) engaging with the compressor. 5. The fastening device includes bolts (158...15.
When the bolt is tightened, the gasket material (95) is compressed between the head (106) and the housing (12) to isolate the working chamber from the outside environment. of a patent claim characterized in that it is configured to
The compressor according to any one of the ranges 1 to 4. 6. The valve device includes a piston (126) having a pressure receiving surface that receives fluid pressure of stored compressed fluid, at least one protrusion (142 or 144) extending toward the reed device, and the piston. an elastic device (132) that biases the compressed fluid away from the reed device, and the fluid pressure of the stored compressed fluid acts on the pressure receiving surface of the piston to overcome the elastic device and move the piston. Claims characterized in that the inlet leads (88, 90) are displaced so that the working chamber is continuously connected to the inlet port (108). The compressor according to any one of items 1 to 5.