JPH05312166A - Rotary compressor - Google Patents

Abstract

PURPOSE:To dissolve obstruction due to fastening bolts for flow from a discharge port toward a pipe so as to prevent sudden rise of pressure in a muffler by providing a pipe leading compressed fluid stayed in the muffler to the outside of the muffler on the same side as the discharge port at setting the muffler fastening bolts as a boundary. CONSTITUTION:Fluid compressed by a rotor 3 in a cylinder 1 is let flow from a discharge port 62b formed on an upper bearing 10 to an upper muffler 14 and stayed in the interior so as to receive silencing effect. The fluid within the upper muffler 14 is discharged inside a compressor case 36 through the upper bearing 10 and a tail pipe 63b arranged on the cylinder 1, and thereafter discharged outside the compressor from a discharge pipe 31. In this way, against the fastening bolts 91 of the upper muffler 14, the discharge port 62b of the upper bearing 10 and the tail pipe 63b are arranged on the same side. Consequently, compressed fluid is smoothly let flow from the discharge port 62b to the tail pipe 63b without being obstructed by the fastening bolts 91. As a result of this, sudden rise of the inner pressure of the upper muffler 14 can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary compressor having a rolling piston.

[0002]

2. Description of the Related Art FIG. 3 is a longitudinal section of a conventional rotary compressor. In the conventional rotary compressor, the fluid compressed in the cylinder 1 is once discharged from the discharge ports 62b and 62a provided in the upper bearing 10 and the lower bearing 13, respectively, to the upper muffler 14 respectively.
And flows into the lower muffler 29, where it is subjected to a muffling effect, then goes out of the discharge muffler, and then is discharged as a compressed fluid from the discharge pipe 31 to the outside of the compressor through various passages inside the compressor. ..

In the figure, 3 is a rotor, 8 is a drive shaft, 1
6 is a retainer, 17 is a discharge valve, 18 is a stator, 19 is a rotor, and 36 is a compressor case.

FIG. 4 is a sectional view taken along the line AA of FIG. 3, and FIG. 5 is a view of a compression chamber, that is, an intermediate section between the upper bearing 10 and the lower bearing 13 as viewed from below. Reference numeral 91 is a muffler stop bolt, and 63a is a conventional tail tube.

The arrow indicating the flow of the compressed fluid in FIG. 4 is shown by a solid line, which is, for example, the discharge port 6 in FIG.
The fluid discharged from 2a passes through the inside of the lower muffler 29 and the tail pipe 63
When it tries to flow into a, it schematically shows a state where it is difficult to flow because it is blocked by the boss portion for the stop bolt 91.
The strictness of the vertical position does not matter.

[0006]

The conventional rotary compressor described above has the following problems to be solved.

That is, in the conventional rotary compressor, when the compressed fluid is a liquid, the upper muffler 14 and the lower muffler 29.
The pressure inside suddenly increased, and the upper muffler 14, retainer 16,
There is a problem that the discharge valve 17 and the like are damaged.

Further, when the discharge port 62a is provided in the lower bearing, there is a problem that the discharge liquid is likely to collect in the lower muffler 29 and is less likely to escape from the lower muffler 29.

The main cause of these is, for example, the discharge port 62a.
Since there is the muffler stop bolt 91 in the middle of the flow path from the tail pipe 63a to the tail pipe 63a, the movement of the fluid is hindered.

In order to solve the above problems, the present invention has a rotary compressor in which the positions of the discharge port and the tail pipe in the plane direction in the muffler are offset to the same side with respect to the stop bolt of the muffler to significantly reduce the flow resistance. The purpose is to provide.

[0011]

As a means for solving the above problems, the present invention comprises an electric motor section and a compressor section in a closed container, the compressor section being a cylinder and a rotor eccentrically rotating in the cylinder. A rotary that includes a blade that reciprocates following the rotation of the rotor to partition the inside of the cylinder into a suction chamber and a compression chamber, a bearing that seals both sides of the cylinder, and a muffler that receives gas discharged from the cylinder chamber. An object of the present invention is to provide a rotary compressor characterized in that a pipe for guiding the compressed fluid accumulated in the muffler to the outside of the muffler is provided on the same side as the discharge port with the muffler stop bolt as a boundary.

[0012]

Since the present invention is constructed as described above, it has the following actions.

That is, since a pipe (tail pipe) for guiding the compressed fluid accumulated in the muffler to the outside of the muffler is provided on the same side as the discharge port with the muffler stop bolt as a boundary, it faces the pipe (tail pipe) from the discharge port. Since the flow passage does not have a muffler stop bolt as in the conventional case, and therefore the flow is not obstructed, the compressed fluid is easily discharged to the outside of the muffler, and the pressure inside the muffler does not rise sharply.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. The same components as those in the conventional example are designated by the same reference numerals, and the description thereof will be omitted unless necessary.

FIG. 1 is a vertical sectional view of this embodiment, and FIG. 2 is a sectional view taken along the line BB of FIG.

In both figures, the tail pipe 63b is provided on the same side as the discharge port 62b on the upper bearing 10 with respect to the position of the stop bolt 91 of the upper muffler 14. And the tail tube 63
The discharge side of b is configured to make a U-turn on the upper side of the cylinder 1 and immediately discharge the fluid to the outside of the upper muffler 14. Other configurations are shown in FIG. 3 of the conventional example from the lower muffler 2
The configuration is substantially the same as that of the configuration in which 9, the discharge port 62a, and the tail pipe 63a are removed.

In order to facilitate understanding, in FIG. 1, the tail pipe 63b is shown expanded and hatched around the drive shaft 8 with respect to the discharge port 62b.

Next, the operation of the above configuration will be described.

The fluid compressed by the rotor 3 in the cylinder 1 collects in the upper muffler 14 through the discharge port 62b provided in the upper bearing 10 and is provided with a sound deadening effect. The fluid in the upper muffler 14 passes through the upper bearing 10 and the tail pipe 63b provided in the cylinder 1, and is discharged into the compressor case 36,
The discharged compressed fluid is discharged from the discharge pipe 31 to the outside of the compressor. A temperature sensor can be attached to the tail tube 63b.

Although not shown in the figure, the tail tube 63b
It is also possible to introduce the heat directly from the compressor to the outside of the compressor and connect it to the discharge fluid cooling device as a heat remover system.

As described above, according to this embodiment, since the discharge port 62b of the upper bearing 10 and the tail pipe 63b are provided on the same side with respect to the stop bolt 91 of the upper muffler 14, the compressed fluid holds the stop bolt 91. Can flow out of the discharge port 62b and flow into the tail tube 63b without being obstructed by
Since the outflow to the outside of the upper muffler 14 is smoothly performed, the pressure in the upper muffler 14 suddenly rises,
There is an advantage that conventional problems such as damage to the retainer, the discharge valve, etc. are eliminated.

Further, since the lower muffler is not used, there is an advantage that the conventional problem that the fluid accumulated in the lower muffler is difficult to escape is eliminated.

[0023]

Since the present invention is constructed as described above, it has the following effects.

That is, in the rotary compressor of the present invention, a muffler, a retainer, a discharge valve, etc. are provided only by providing a pipe for guiding the compressed fluid accumulated in the muffler to the outside of the muffler on the same side as the discharge pipe with the muffler stop bolt as a boundary. Since the conventional inconvenience that the product is easily damaged can be solved, it is possible to easily provide countermeasures, and it is possible to inexpensively provide a highly reliable compressor with few problems in the compressor due to liquid compression.

Further, since only the upper muffler can be used, the discharge gas is concentrated in one flow passage and the flow passage can be shortened, so that the sensitivity can be improved when a gas temperature sensor is attached to a pipe (tail pipe), for example. Also from this point, the reliability of the rotary compressor can be improved.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a rotary compressor according to an embodiment of the present invention,

FIG. 2 is a sectional view taken along the line BB of FIG.

FIG. 3 is a vertical sectional view of a conventional example,

FIG. 4 is a sectional view taken along the line AA of FIG.

5 is a sectional view of the upper bearing 10 and the lower bearing 13 shown in FIG.

[Explanation of symbols]

 1 Cylinder 3 Rotor 8 Drive Shaft 10 Upper Bearing 13 Lower Bearing 14 Upper Muffler 62b Discharge Port 63b Tail Tube 91 Stop Bolt

Claims (1)

[Claims] 1. A hermetically sealed container includes an electric motor section and a compressor section, the compressor section including a cylinder, a rotor eccentrically rotating in the cylinder, and a reciprocating cylinder that follows the rotation of the rotor. In a rotary compressor including a blade that divides the inside into a suction chamber and a compression chamber, a bearing that seals both sides of a cylinder, and a muffler that receives gas discharged from the cylinder chamber, the compressed fluid accumulated in the muffler is removed from the muffler. A rotary compressor characterized in that a pipe for leading to is provided on the same side as a discharge port with a muffler stop bolt as a boundary.