JPS6321749Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] The present invention relates to a compressor, and in particular, productivity can be improved by holding a discharge gas temperature reduction pipe in a cantilevered manner inside a muffler. This invention relates to a muffler for a compressor.

[Technical background of the invention]

In general, a compressor has a valve cover 4 attached to a discharge part 2 of a cylinder 1 via a valve plate 3, as shown in FIG. The gas is fed through a muffler 6 for muffling. The muffler 6 includes a plurality of stages of expansion chambers 7, 8, 9, and each of these expansion chambers 7, 8, 9
are arranged in series on one axis, and the communicating holes 10,
11, and a discharge port 12 is provided in the final stage expansion chamber 9.

FIG. 2 shows the exhaust gas from the valve cover 4 being led out through the extraction pipe 13 to the muffler 1.
4, the function of the muffler 14 is exactly the same as that shown in FIG.

Furthermore, many recent compressors are equipped with a high compression function, and as a result, the temperature of discharged gas tends to rise. For this reason, conventionally, as shown in FIG. 8, the valve cover 4 and the final stage of the muffler 6 are connected from the outside with a connecting pipe 15, and the discharged gas in the discharge chamber 5 is directly guided to the final stage of the muffler 6. There was one designed to reduce the temperature.

[Problems with background technology]

However, in the case where the connecting pipe 15 is attached from the outside to reduce the temperature of the discharged gas, each connecting part needs to be completely sealed by brazing or the like, so the installation work is difficult. This became extremely troublesome and reduced productivity.

[Purpose of invention]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a muffler for a compressor in which a pipe for temperature reduction can be easily attached without impairing the function of the pipe.

[Summary of the idea]

In order to achieve the above object, the compressor muffler according to the present invention has a discharge pipe of a predetermined length inserted in the internal axial direction of the muffler, and the base end of the discharge pipe on the gas inlet side is press-fitted into the muffler inlet passage. At the same time, the pipe main body portion extending in the axial direction of the muffler from the base end on the inlet side is formed into an elongated shape so as to pass through the communicating holes of each stage of the muffler without blocking it, and the tip end of the pipe main body is It is characterized by being opened at the final stage of the muffler, and the cylinder discharge part and the final stage of the muffler are directly communicated by a discharge pipe held in a cantilever manner inside the muffler.

[Example of idea]

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 4, in which the same components as in FIG. 1 are indicated by the same reference numerals, a discharge pipe 20 consisting of a straight pipe of a predetermined length is inserted into the interior of the muffler 6 in the axial direction of the muffler.

The discharge pipe 20 has one end formed as a large-diameter gas inlet base end 20a, which is press-fitted into the inlet passage 6a of the muffler 6, which has approximately the same diameter. This allows the discharge pipe 20 to be held in a cantilevered manner. The main body 20b of the discharge pipe 20 is
The inlet-side base end 20a extends linearly in the axial direction of the muffler 6, and penetrates each of the communication holes 10, 11 of the expansion chambers 7, 8, 9 of each stage of the muffler.
The main body portion 20b is formed in an elongated shape so as not to block the communication holes 10 and 11.
The exhaust pipe 20 is press-fitted to the inside of the exhaust pipe 20 so that gas can flow freely therethrough. Furthermore, the tip of the main body 20b opens into the expansion chamber 9 of the final stage of the muffler, which allows the discharge chamber 5 to communicate directly with the expansion chamber 9 of the final stage of the muffler, thereby providing a cooling effect. In this way, the discharge chamber 5 and the final stage of the muffler communicate with each other inside the muffler 6, so that strict sealing is not required for the press-fitted and fixed portion of the discharge pipe 20.

Further, the above-mentioned discharge pipe 20 may be attached as shown in FIG. 5, for example. First, the tip of the discharge pipe 20 is inserted into the inlet side of the muffler 6. Finally, the inlet side base end portion 20b is press-fitted into the muffler inlet passage 6a. In this way, the installation work of the discharge pipe 20 can be performed extremely easily. In this case, if the discharge pipe 20 is formed into a straight pipe shape as in the present embodiment, it can be inserted into the muffler 6 extremely easily, which is more convenient.

[Effect of idea]

As described above, the compressor muffler according to the present invention holds the discharge pipe for temperature reduction in a cantilever shape by press-fitting it inside the muffler, and communicates the cylinder discharge part with the final stage of the muffler on the inside of the muffler. This eliminates the need for sealing at the press-fit fixing portion of the discharge pipe, and the pipe installation work only requires press-fitting one end of the discharge pipe, resulting in extremely high work efficiency. Therefore, according to the present invention, the productivity of the compressor can be greatly improved while the temperature reduction effect of the muffler can be maintained.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional view showing a muffler for a general compressor, Fig. 2 is a longitudinal cross-sectional view showing another example of a muffler for a general compressor, and Fig. 3 is a muffler with a conventional temperature reduction pipe attached. FIG. 4 is a vertical cross-sectional view showing a muffler of a compressor in an embodiment of the present invention, and FIG. 5 is a vertical cross-sectional view showing a process of installing a discharge pipe. 1...Cylinder, 4...Valve cover, 5...
Discharge chamber, 6...muffler, 7, 8, 9...expansion chamber of each muffler stage, 10, 11...communication hole, 20...discharge pipe, 20a...inlet side base end, 20b...
Main body.

Claims (1)

[Claims for Utility Model Registration] 1. A muffler for a compressor in which a muffler having multiple stages of noise-reducing expansion chambers arranged in series on one axis is attached to the discharge part of a cylinder; The inlet end proximal end of the discharge pipe is press-fitted into the muffler inlet passage to hold the discharge pipe in a cantilevered manner, and the pipe main body extending from the inlet proximal end is fitted in the internal axial direction. A muffler for a compressor, characterized in that it is formed into an elongated shape so as to pass through the communicating holes of each stage of the muffler expansion chamber without being blocked, and the tip of this pipe main body is opened to the final stage of the muffler expansion chamber. . 2. The muffler for a compressor according to claim 1, wherein the base end of the discharge pipe on the inlet side is formed to have a large diameter. 3. The muffler for a compressor according to claim 1, wherein the discharge pipe is formed in a straight pipe shape.