JP7580165B1 - Compressor housing - Google Patents

Abstract

A compressor housing is provided that enables dryer waste heat to be exhausted together with compressor waste heat through a single duct.
[Solution] An outer box 10 is provided to house a compressor device P and a compressed air dryer Q. A large exhaust port 11 for discharging compressor waste heat is formed on the top surface of the outer box 10. A small exhaust port 12 for discharging dryer waste heat is formed on the top surface of the outer box 10. A large opening 21 for covering the large exhaust port 11 is provided in a collecting duct 20. A small opening 22 for covering the small exhaust port 12 is provided in the collecting duct 20. A duct exhaust port 23 for discharging waste heat to the outside is provided in the collecting duct 20. A Venturi tube 30 is provided inside the collecting duct 20. The dryer waste heat is simultaneously discharged with the waste heat discharged from the Venturi tube 30.
[Selected Figure] Figure 1

Description

The present invention relates to a compressor housing suitable for housing a compressor device equipped with a dryer for drying compressed air.

Patent document 1 describes a housing that houses a compressor device equipped with a dryer. This housing is specially constructed to store the compressor and motor in a compact manner by suspending them in the center.

On the other hand, when installing a compressor unit in a factory or the like, if it is necessary to dry the compressed air, a dryer is installed alongside the compressor unit. In this case, a housing H is used to house the compressor unit and the dryer (see Figure 5).

To use a general housing H, including the housing described in Patent Document 1, indoors, it is necessary to provide an exhaust duct D to exhaust the waste heat of the compressor unit to the outside (see Figure 5). In other words, since compressor units that require a dryer have a large amount of exhaust heat, it is necessary to exhaust the compressor waste heat PA to the outside using an exhaust duct.

Patent No. 5127831

The duct D used in the housing of Patent Document 1 and the indoor housing H exhausts compressor waste heat PA to the outside, but since the dryer waste heat QA is small, it is generally exhausted indoors (see Figure 5). Furthermore, since returning the dryer waste heat QA to the room would raise the indoor temperature, the room is sufficiently ventilated to prevent overheating. In other words, if the indoor temperature rises, the compressor may be automatically controlled to make an emergency stop.

However, if the room in which the compressor unit is installed is small, it may not be possible to prevent overheating by simply ventilating the room. In that case, it becomes necessary to also install a duct to dispose of the dryer waste heat QA (not shown). In this case, the duct for the dryer and the duct for the compressor unit cannot be combined into one.

In other words, if the dryer waste heat QA is discharged together with the compressor waste heat PA, the amount of waste heat from the compressor waste heat PA is much greater than the amount of waste heat from the dryer waste heat QA, and this causes the compressor waste heat PA to flow back toward the exhaust port side of the dryer waste heat QA, which may damage the dryer.

Therefore, the housing required two ducts to exhaust the waste heat from each unit to the outside, which required separate weather covers, ventilation fans, etc. As a result, the configuration for exhausting the compressor waste heat PA and the dryer waste heat QA through ducts had to be extremely large-scale. As such, there were many challenges in accommodating a compressor unit with a dryer in a housing.

The present invention was created to solve the above problems, and aims to provide a compressor housing that houses a compressor unit equipped with a dryer, and that allows the waste heat of the dryer to be exhausted together with the waste heat of the compressor unit through a single duct.

In order to achieve the above object, the first means of the present invention is a compressor housing that includes an outer box 10 that houses a compressor unit P and a compressed air dryer Q and has a large exhaust port 11 for compressor waste heat and a small exhaust port 12 for dryer waste heat at an upper portion, and a collecting duct 20 that is installed on the outer box 10,
The collecting duct 20 includes a large opening 21 covering the large exhaust port 11, a small opening 22 covering the small exhaust port 12, a duct exhaust port 23 for discharging compressor waste heat PA to the outside, and a Venturi tube 30 arranged in the collecting duct 20, connected to a part of the large opening 21, and consisting of a tube that opens above the small exhaust port 12 and has a narrowed diameter in the middle portion, and is configured so that the dryer waste heat QA discharged to the small exhaust port 12 as the compressor waste heat PA passing through the Venturi tube 30 is simultaneously discharged from the duct exhaust port 23.

The venturi tube 30 of the second means includes an auxiliary opening 31 that covers a portion of the large exhaust port 11, a horizontal tube portion 32 that extends from the large exhaust port 11 side to the small exhaust port 12 side, a venturi 33 that has a narrowed diameter in the middle of the horizontal tube portion 32, and an exhaust port 34 that opens at the end that is extended and expanded from the venturi 33.

The collecting duct 20 of the third means includes a horizontal tube section 24 that extends horizontally from the large opening 21 and has the small opening 22 on its lower surface, and the duct exhaust port 23 formed on the upper surface of the end side of the horizontal tube section 24.

The fourth means, the collecting duct 20, is a windbreak pipe 25 that extends upward from the duct exhaust port 23.

According to the present invention, it is possible to simultaneously exhaust compressor waste heat PA and dryer waste heat QA from a single duct exhaust port 23. As a result, it is possible to prevent temperature rises in small rooms where the compressor device P and compressed air dryer Q are required, and to use them safely.

In addition, since the collection duct 20 is installed in the outer box 10, it can also be installed outdoors as is.

FIG. 2 is a front view showing an embodiment of a housing of the present invention. FIG. 1 is an explanatory diagram showing an embodiment of a Venturi tube according to the present invention. FIG. 2 is a schematic perspective view showing an outer box body of the present invention. FIG. 4 is an exploded perspective view showing another embodiment of the collecting duct of the present invention. FIG. 13 is a front view showing an example of use of a conventional housing.

The housing of the present invention relates to a housing that houses a compressor device P equipped with a compressed air dryer Q, and includes an outer box body 10, a collecting duct 20, and a Venturi tube 30 (see Figure 1).

The outer box 10 houses the compressor unit P and the compressed air dryer Q, and is equipped at the top with a large exhaust port 11 for compressor waste heat and a small exhaust port 12 for dryer waste heat (see Figure 3). At this time, the compressed air dryer Q is housed in a state separated from the compressor unit P by a partition plate 13 arranged inside the outer box 10 (see Figure 4). The partition plate 13 shown in the figure is formed in a box shape to house the compressed air dryer Q, but it is also possible to install only the plate wherever necessary.

The compressor unit P side of the outer box 10 is formed with a cooling air intake port 14 that sends cooling air to the compressor unit P, and an intake port 15 for the compressor unit P (see FIG. 4). In the figure, P1 indicates a drive motor, P2 indicates a radiator, and P3 indicates a radiator exhaust fan.

On the other hand, a cooling air intake port 16 that supplies cooling air to the compressed air dryer Q is formed on the compressed air dryer Q side of the outer box 10 (see FIG. 4). In the figure, the symbol Q1 indicates a radiator, the symbol Q2 indicates a dryer fan, and the symbol Q3 indicates a compressed air discharge valve.

The collecting duct 20 forms a large opening 21 that covers the large exhaust port 11, a small opening 22 that covers the small exhaust port 12, and a duct exhaust port 23 that simultaneously discharges the compressor waste heat PA and the dryer waste heat QA (see Figure 1).

The illustrated collecting duct 20 has a horizontal tube section 24 facing from the large exhaust port 11 side to the small exhaust port 12 side, and a duct exhaust port 23 opening upward from the small exhaust port 12 side of the horizontal tube section 24 (see Figures 2 and 4). The large opening 21 covering the large exhaust port 11 has an auxiliary opening 31 where the end of the Venturi tube 30 opens. A portion of the compressor waste heat PA is sent from this auxiliary opening 31 to the Venturi tube 30.

The Venturi tube 30 is a tubular member placed inside the collecting duct 20, and has an auxiliary opening 31 that covers part of the large opening 21, and an outlet 34 that opens above the small opening 22 (see Figure 2). The diameter of the middle part of this tube is narrowed to form a Venturi 33. A Venturi is a mechanism that increases the flow rate and generates low pressure by narrowing the flow of a fluid.

The compressor waste heat PA that enters through the auxiliary opening 31 is accelerated by the venturi 33 and discharged at low pressure from the exhaust port 34 by this Venturi tube 30, and is discharged from the duct exhaust port 23 together with the dryer waste heat QA (see Figure 2).

Due to this Venturi effect, even if the pressure of the dryer waste heat QA is lower than that of the compressor waste heat PA, the compressor waste heat PA will not flow back into the compressed air dryer Q. For example, if the exhaust pressure of the compressor waste heat PA is 231 m3/min and the exhaust pressure of the dryer waste heat QA is 32.2 m3/min, and the area of the auxiliary opening 31 is 100, then narrowing it with the Venturi 33 and setting the area of the exhaust port 34 to 35 will have the effect of preventing backflow. Note that these areas will vary slightly depending on the model.

When the housing of the present invention is installed indoors, a duct pipe for discharging waste heat to the outside of the room is provided at the duct exhaust port 23 of the collecting duct 20 shown in Figure 1 (not shown). In this case, there is only one duct pipe, and there is no need to provide a ventilation fan or the like.

In addition, since the collecting duct 20 is fixed to the outer box 10, the housing of the present invention can be installed outdoors, such as on a rooftop. In this case, forming a windbreak pipe 25 around the duct exhaust port 23 makes it less susceptible to the effects of wind direction (see Figure 4).

In addition, in the present invention, the configurations of the outer box 10, the collecting duct 20, the Venturi tube 30, etc. are not limited to the illustrated examples, and their design changes are arbitrary.

D Duct H Housing P Compressor unit PA Compressor waste heat P1 Drive motor P2 Radiator P3 Radiator exhaust fan Q Compressed air dryer QA Dryer waste heat Q1 Radiator Q2 Dryer fan Q3 Compressed air discharge valve 10 Outer box body 11 Large exhaust port 12 Small exhaust port 13 Partition plate 14 Cooling air supply port 15 Suction intake air supply port 16 Cooling air supply port 20 Collecting duct 21 Large opening 22 Small opening 23 Duct exhaust port 24 Horizontal cylinder section 25 Windbreak tube 30 Venturi tube 31 Auxiliary opening 32 Horizontal cylinder section 33 Venturi 34 Exhaust port

Claims (4)

A compressor housing includes an outer box that houses a compressor device and a compressed air dryer and has a large exhaust port for compressor waste heat and a small exhaust port for dryer waste heat at an upper portion, and a collecting duct that is installed on the outer box,
the collecting duct includes a large opening that covers the large exhaust port, a small opening that covers the small exhaust port, a duct exhaust port that discharges compressor waste heat to the outside, and a Venturi tube that is arranged in the collecting duct, communicates with a part of the large opening, and opens above the small exhaust port, and has a narrowed diameter at an intermediate portion;
A compressor housing characterized in that the dryer waste heat discharged to a small exhaust port together with the compressor waste heat passing through a Venturi tube is simultaneously discharged from a duct exhaust port. The compressor housing according to claim 1, wherein the venturi tube is provided with an auxiliary opening that covers a portion of the large exhaust port, a horizontal tube portion that extends from the large exhaust port side to the small exhaust port side, a venturi with a narrowed diameter in the middle of the horizontal tube portion, and an exhaust port that opens at the end that is extended and expanded from the venturi. The compressor housing according to claim 1, wherein the collecting duct comprises a horizontal cylinder portion that extends horizontally from the large opening and has the small opening on its lower surface, and the duct exhaust port is formed on the upper surface of the end side of the horizontal cylinder portion. 4. The compressor housing according to claim 3, wherein the collecting duct has a windbreak pipe extending upward from the duct exhaust port.

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