JPH06341391A - Drawn cup type cooling device - Google Patents

Abstract

PURPOSE:To provide a drawn cup type cooling device which does not generate stagnation of gas in an oil cooling part even in case it is used in an oil-cooled compressor, for example of package type, which enables drain and oil bleeding from the oil cooling part and a gas cooling part, and which is free from necessity for enlargement of the depth dimension of the package otherwise required for provision of pipings to make drain and oil bleeding. CONSTITUTION:An oil cooling part 13 and a gas cooling part 14 are furnished in the direction in which a plurality of plates 12 formed by the use of one die are joined, wherein the oil cooling part 13 is located above while the gas cooling part 14 is arranged below, and between the two cooling parts a spacer 3 is interposed which is equipped with a liquid exhaust hole 2 for exhausting drain and oil from the bottom part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drone cup type cooler having an oil cooling part and a gas cooling part in a direction in which a plurality of plates formed by using the same mold are joined.

[0002]

2. Description of the Related Art Conventionally, a drone cup type cooler 11 shown in FIG. 3 is known. This cooler 11 includes a plurality of plates 12 shown in FIGS.
It is formed by alternately laminating and joining the oil cooling portion 1 in the joining direction of the plate 12.
3 and the gas cooling unit 14. Plate 12
When the two plates 12 face each other and are joined to each other by punching holes 16 formed in the central portions of the projections 15 formed at both ends, the punching holes 16 are formed.
It is provided with a communication passage forming portion 22 that forms a communication passage 21 that connects the two fluid circulation spaces 17 and 18 formed through the flow passages 17 and 18 or the flow passage spaces 19 and 20.

A fin 23 is arranged outside the communication passage forming portion 22, and heat is taken from the high temperature fluid flowing in the communication passage 21 by the fin 23. The plate 12a, which forms the boundary between the oil cooling unit 13 and the gas cooling unit 14, has the same shape as the plate 12 except that the center portion of the protrusion 15 is not punched. Are doing

FIGS. 6 to 8 show a package type oil-cooled rotary compressor using the drone cup type cooler 11 shown in FIG.
For example, an oil-cooled screw compressor is shown. This compressor has an inlet 31 and an outlet 32 for a cooling gas, usually air.
In a package 33 having a compressor body, a motor,
A cooler 11 and a sirocco fan 35, which is a kind of intake means, are provided for accommodating a main body 34 including an oil separator / collector, an air tank, and the like, and for cooling the inside and outside of the main body 34. In this compressor, the cooler 11 is arranged laterally, and as described later, the oil cooling section 13 is used as an oil cooler and the gas cooling section 14 is used as an aftercooler.

FIG. 7 shows the connection relationship between the compressor main body 36 of the main body section 34, the oil cooling section 13 and the gas cooling section 14 of the cooler 11. In FIG. 6, such connection relationship is generated. Pipings are omitted from the drawing. As shown in the figure, on the discharge side of the compressor body 36, an oil separation / collector 38 forming a part of the discharge flow path 37 and the gas cooling unit 14 functioning as an aftercooler are located. The lower part of the oil separation / recovery device 38 is an oil sump 39, from which the bearing inside the compressor body 36 passes through the oil cooling part 13 which functions as an oil cooler.
An oil supply passage 40 is provided to reach an oil injection point such as a shaft sealing portion and a gas compression space.

The motor described above is connected to the compressor body 36, and the air tank is located downstream of the oil cooling section 13. Then, in the compressor body 36, the gas compressed while being lubricated is discharged together with the oil, and is separated into gas and liquid by the oil separation / collector 38, and the oil is dropped to the oil sump 3
The compressed gas temporarily stored in 9 and separated into oil is cooled in the gas cooling unit 14 and sent to the right side in FIG. 7. On the other hand, the oil in the oil sump 39 is cooled by the oil cooling unit 13 and sent to the above-mentioned lubrication point, and thereafter circulated and used in the same manner as above.

Further, as shown in FIG. 8, the drain deposited in the oil cooling section 13 or the oil itself is deposited in the gas cooling section 14 from the drainage section 41 provided in the lower oil inflow section. The drain is discharged from the drain outlet 42 provided in the lower gas outlet. The compressor body 36,
The cooling from the outside of the motor, the cooling of the oil in the oil cooling section 13, and the cooling of the compressed gas in the gas cooling section 14 are performed by operating the sirocco fan 35, as shown by arrows in FIG. This is performed in the process in which the cooling gas flows in from the inlet 31, passes through the main body 34, the motor, and the cooler 11, and flows to the outlet 12. By cooling the oil cooling unit 13 and the gas cooling unit 14 in this way, the compressed gas and the oil are cooled as described above.

[0008]

SUMMARY OF THE INVENTION The conventional cooler 11 described above.
Then, as shown in FIG. 9, the oil cooling unit 1 is arranged in the vertical direction.
When the gas cooling unit 14 is located above 3, the gas accumulates in the upper portion of the oil cooling unit 13 and this gas cannot be drained, and the drain that has precipitated in the gas cooling unit 14 accumulates in the lower portion. Therefore, there is a problem that this cannot be pulled out. Contrary to the case of FIG. 9, when the oil cooling part 13 is positioned above the gas cooling part 14 as shown in FIG. 10, the drainage deposited in the oil cooler 13 accumulates in the lower part, There is a problem that this cannot be removed.

On the other hand, as shown in FIG. 8, the cooler 1
When 1 is arranged in the lateral direction, the gas does not stay in the oil cooling section 13, and as described above, the drain section 41 and the drain drain section 42 are provided to enable drain drain and oil drain. However, since the pipe is extended to the left and right in FIG. 8, this pipe overhangs in the depth direction perpendicular to the paper surface in FIG. 6, and the problem that the depth dimension of the package becomes large occurs. The present invention has been made to solve the above-mentioned conventional problems. For example, even when used in a package-type oil-cooled compressor, gas does not accumulate in the oil-cooling unit, and the oil-cooling unit does not accumulate. , It is an object of the present invention to provide a drone cup type cooler that enables drainage and oil removal from the gas cooling section, and that does not require the package depth dimension to be increased by the piping for providing drainage and oil removal. .

[0010]

In order to solve the above-mentioned problems, the first invention is a drone provided with an oil cooling part and a gas cooling part in the direction of joining a plurality of plates formed by using the same mold. In the cup-type cooler, the oil cooling section is arranged above and the gas cooling section is arranged below, and a drain hole for discharging drainage and oil from the bottom of the oil cooling section is provided between the both cooling sections. It was formed with a spacer interposed.

The second invention is a drone cup type cooler having an oil cooling part and a gas cooling part in a direction in which a plurality of plates formed by using the same mold are joined, and the gas cooling part is provided above. , The oil cooling section is arranged below, and a drain vent hole for discharging drain from the bottom of the gas cooling section and a gas vent hole for discharging gas from the upper part of the oil cooling section, between the both cooling sections. It was formed with a spacer provided with.

[0012]

According to the above-mentioned invention, since the drain and the oil drain are provided, it is not necessary to laterally extend the pipe, and the drain, the oil drain and the gas can be released.

[0013]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a drone cup type cooler 1 according to the first aspect of the present invention, and parts common to the cooler 11 shown in FIG. In this cooler 1, the oil cooling unit 13 is provided above and the gas cooling unit 1 is provided below.
4 is arranged, and the oil cooling unit 1 is provided between the both cooling units.
It is formed by interposing a spacer 3 having a drainage hole 2 for draining drain and oil from the bottom of 3. Further, in this cooler 1, instead of the plate 12a at the boundary between both cooling parts in the cooler 11 of FIG. 3, the spacer 3 closes the punched hole 16.

And by forming in this way,
The accumulation of gas in the oil cooling unit 13 and the accumulation of drain in the gas cooling unit 14 are eliminated, and the drain and oil deposited in the oil cooling unit 13 can be discharged from the drain hole 2. Further, it is not necessary to laterally project the pipe connected to the drainage hole 2, and it is necessary to laterally project the pipe in order to provide the drainage part 41 and the drain drain part 42 as shown in FIG. As a result, the depth dimension of the package can be reduced when the cooler 1 is used in a package-type oil-cooled compressor, for example.

FIG. 2 shows a drone cup type cooler 4 according to the second aspect of the present invention. The parts common to the cooler 1 shown in FIG. The gas cooling unit 14 is arranged above and the oil cooling unit 13 is arranged below, and between the both cooling units, the drain hole 5 for discharging drain from the bottom of the gas cooling unit 14 and the upper portion of the oil cooling unit 13 are arranged. It is formed with a spacer 7 having a gas vent hole 6 for discharging gas interposed. By forming in this way, the gas accumulated in the upper part in the oil cooling section 13 is discharged from the gas vent hole 6, the retention is eliminated, and the drain deposited in the gas cooling section 14 is discharged from the drain vent hole 5. Can be discharged. Further, the pipes connected to the drain hole 5 and the drain hole 6 do not need to be laterally extended.
As a result, it is not necessary to laterally extend the pipe in order to provide the drainage portion 41 and the drain drain portion 42 as shown in FIG.
For example, when the cooler 1 is used in a package type oil-cooled compressor, the depth dimension of the package can be reduced.

[0016]

As is apparent from the above description, according to the first invention, a drone cup having an oil cooling part and a gas cooling part in a direction of joining a plurality of plates formed by using the same mold. In the type cooler, the oil cooling part is provided above,
The gas cooling section is arranged below, and a spacer provided with a drain hole for discharging drain and oil from the bottom of the oil cooling section is interposed between the both cooling sections.

Further, according to the second invention, in the drone cup type cooler provided with the oil cooling part and the gas cooling part in the direction of joining a plurality of plates formed by using the same mold, the above gas is placed above. The oil cooling unit is arranged below the cooling unit, and the drain hole for discharging the drain from the bottom of the gas oil cooling unit and the gas discharging from the upper part of the oil cooling unit are provided between the both cooling units. It is formed with a spacer having a gas vent hole interposed.

Therefore, even when the cooler according to the present invention is used in, for example, a package type oil-cooled compressor, gas does not accumulate in the oil cooling section, and the oil cooling section and the gas cooling section are not generated. It is possible to remove the drain and oil from the inside, and it is also possible to eliminate the need to increase the depth dimension of the package by the pipe for providing the drain and the oil.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a drone cup type cooler according to a first invention.

FIG. 2 is a sectional view of a drone cup type cooler according to a second invention.

FIG. 3 is a cross-sectional view of a conventional drone cup type cooler.

4 is a cross-sectional view of a plate that constitutes the cooler shown in FIG.

5 is a plan view of the plate shown in FIG. 4. FIG.

6 is a cross-sectional view of a package type oil-cooled compressor using the cooler shown in FIG.

7 is a compressor body of the compressor shown in FIG. 6, an oil cooling unit,
It is a figure which shows the connection relation of a gas cooling part.

8 is a cross-sectional view showing a cooler of the compressor shown in FIG.

9 is a schematic front view showing a state in which the cooler shown in FIG. 8 is vertically arranged.

10 is a schematic front view showing a state in which the cooler shown in FIG. 8 is arranged vertically and upside down from the cooler shown in FIG. 9.

[Explanation of symbols]

1,4 Drone cup type cooler 2 Drain hole 5 Drain drain hole 3,7 Spacer 6 Gas vent hole 12 Plate 13 Oil cooling part 14 Gas cooling part

Claims (2)

[Claims] 1. A drone cup type cooler having an oil cooling part and a gas cooling part in a direction in which a plurality of plates formed by using the same mold are joined together, wherein the oil cooling part is provided above and the oil cooling part is provided below. A drone cup type cooling unit, wherein a gas cooling unit is arranged and a spacer having a drain hole for discharging drainage and oil from the bottom of the oil cooling unit is interposed between the both cooling units. 2. A drone cup type cooler comprising an oil cooling part and a gas cooling part in a direction in which a plurality of plates formed by using the same mold are joined together, wherein the gas cooling part is provided above and the gas cooling part is provided below. A spacer provided with an oil cooling part, and a drain vent hole for discharging drain from a bottom part of the gas cooling part and a gas vent hole for discharging gas from an upper part of the oil cooling part between the both cooling parts. Drone cup type cooling unit characterized by interposing.