Compressor housing

Abstract

To provide a housing for a compressor capable of exhausting dryer waste heat together with compressor waste heat by one duct.SOLUTION: An outer box body 10 for storing a compressor device P and a compressed air dryer Q is provided. A large exhaust port 11 for exhausting the waste heat of the compressor is formed on the upper surface of the outer box body 10. A small exhaust port 12 for exhausting dryer waste heat is formed on the upper surface of the outer box body 10. A large opening part 21 covering the large exhaust port 11 is provided in the collecting duct 20. A small opening part 22 covering the small exhaust port 12 is provided in the collecting duct 20. The collecting duct 20 is provided with a duct exhaust port 23 for exhausting waste heat to the outside. A Venturi tube 30 is provided in a collecting duct 20. The waste heat of the dryer is simultaneously exhausted by the waste heat discharged from the Venturi tube 30.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a compressor housing suitable for accommodating a compressor unit equipped with a dryer for drying compressed air. [Background technology]

[0002] A housing for accommodating a compressor device equipped with a dryer is described in Patent Document 1. This housing is specially configured to accommodate the compressor and motor suspended in the center for compact storage.

[0003] On the other hand, when installing a compressor unit in a factory or other facility, 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).

[0004] 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 discharge the waste heat of the compressor unit outside the room (see FIG. 5). That is, since compressor units that require a dryer generate a large amount of waste heat, it is necessary to use an exhaust duct to discharge the compressor waste heat PA outside the room. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 5127831 Summary of the Invention [Problem to be solved by the invention]

[0006] The duct D used in the housing of Patent Document 1 and the indoor housing H exhausts compressor waste heat PA outdoors, but the dryer waste heat QA is small, so it is generally exhausted indoors (see Figure 5). Since returning the dryer waste heat QA indoors would raise the indoor temperature, sufficient ventilation is performed indoors to prevent overheating. In other words, if the indoor temperature rises, the compressor's automatic control may cause an emergency shutdown.

[0007] 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 this 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.

[0008] 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 will be much greater than the amount of waste heat from the dryer waste heat QA, and the compressor waste heat PA will flow back toward the exhaust port side of the dryer waste heat QA, which could damage the dryer.

[0009] 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 fitting a compressor unit with a dryer in a housing.

[0010] The present invention was created to solve the above-mentioned problems, and aims to provide a compressor housing that houses a compressor unit equipped with a dryer, and that allows the waste heat from the dryer to be exhausted together with the waste heat from the compressor unit through a single duct. [Means for solving the problem]

[0011] In order to achieve the above object, the first means of the present invention is a compressor housing that includes an outer casing 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 its top, and a collecting duct 20 that is installed on the outer casing 10, The collecting duct 20 is provided with a large opening 21 that covers the large exhaust port 11, a small opening 22 that covers the small exhaust port 12, a duct exhaust port 23 that discharges compressor waste heat PA to the outside, and a Venturi tube 30 that is arranged in the collecting duct 20, communicates with part of the large opening 21, and consists of a pipe that opens above the small exhaust port 12 and has a narrowed diameter in the middle, and is configured so that dryer waste heat QA that is discharged to the small exhaust port 12 together with the compressor waste heat PA that passes through the Venturi tube 30 is simultaneously discharged from the duct exhaust port 23.

[0012] The Venturi tube 30 of the second means comprises an auxiliary opening 31 that covers part of the large exhaust port 11, a horizontal cylindrical section 32 that extends from the large exhaust port 11 side toward the small exhaust port 12 side, a venturi 33 that has a narrowed diameter in the middle part of the horizontal cylindrical section 32, and an exhaust port 34 that opens at the end that expands and extends from the venturi 33.

[0013] The collecting duct 20 of the third means includes a horizontal cylindrical portion 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 cylindrical portion 24.

[0014] The collecting duct 20 of the fourth means is formed by extending a windbreak pipe 25 upward from the duct exhaust port 23 . [Effects of the Invention]

[0015] According to the present invention, it is possible to simultaneously exhaust the compressor waste heat PA and the dryer waste heat QA from one duct exhaust port 23. As a result, it is possible to prevent a temperature rise in a small room where the compressor device P and the compressed air dryer Q are required, and the devices can be used safely.

[0016] Moreover, since the collecting duct 20 is installed in the outer box body 10, it can be installed outdoors as it is. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 2 is a front view showing an embodiment of a housing of the present invention. [Figure 2] FIG. 1 is an explanatory diagram showing an embodiment of a Venturi tube according to the present invention. [Figure 3] FIG. 1 is a schematic perspective view showing an outer box body of the present invention. [Figure 4] FIG. 10 is an exploded perspective view showing another embodiment of the collecting duct of the present invention. [Figure 5] FIG. 10 is a front view showing an example of use of a conventional housing. DETAILED DESCRIPTION OF THE INVENTION

[0018] The housing of the present invention relates to a housing for accommodating 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 FIG. 1).

[0019] The outer box 10 houses the compressor device P and the compressed air dryer Q, and is provided 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 device P by a partition plate 13 arranged inside the outer box 10 (see Figure 4). The illustrated partition plate 13 is formed in the shape of a box that houses the compressed air dryer Q, but it is also possible to install only the plate where necessary.

[0020] On the compressor device P side of this outer box 10, there are formed a cooling air intake port 14 for sending cooling air to the compressor device P, and an air intake port 15 for the compressor device P (see FIG. 4). In the figure, P1 denotes a drive motor, P2 denotes a radiator, and P3 denotes a radiator exhaust fan.

[0021] On the other hand, a cooled air intake port 16 is formed on the compressed air dryer Q side of the outer box 10 to supply cooled air to the compressed air dryer Q (see FIG. 4). In the figure, symbol Q1 denotes a radiator, symbol Q2 denotes a dryer fan, and symbol Q3 denotes a compressed air discharge valve.

[0022] 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).

[0023] The illustrated collecting duct 20 includes a horizontal cylindrical section 24 facing from the large exhaust port 11 side toward the small exhaust port 12 side, and a duct exhaust port 23 that opens upward from the small exhaust port 12 side of the horizontal cylindrical section 24 (see FIGS. 2 and 4). The large opening 21 covering the large exhaust port 11 is provided with an auxiliary opening 31 at the open end of a Venturi tube 30. A portion of the compressor waste heat PA is sent from this auxiliary opening 31 to the Venturi tube 30.

[0024] The Venturi tube 30 is a tubular member placed inside the collecting duct 20, and has a sub-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 narrows the flow of a fluid, increasing the flow velocity and generating low pressure.

[0025] This Venturi tube 30 allows the compressor waste heat PA that enters through the auxiliary opening 31 to be accelerated by the Venturi 33 and discharged at low pressure from the discharge port 34, where it is discharged from the duct exhaust port 23 together with the dryer waste heat QA (see Figure 2).

[0026] This Venturi effect prevents the compressor waste heat PA from flowing back into the compressed air dryer Q, even if the pressure of the dryer waste heat QA is lower than that of the compressor waste heat PA. 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 discharge port 34 to 35 will have the effect of preventing backflow. Note that these area values ​​will vary slightly depending on the model.

[0027] When the housing of the present invention is installed indoors, a duct pipe (not shown) is provided at the duct exhaust port 23 of the collecting duct 20 shown in Fig. 1 to discharge waste heat to the outside. In this case, only one duct pipe is required, and there is no need to provide a ventilation fan or the like.

[0028] Furthermore, 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 roof. In this case, by forming a windbreak pipe 25 around the duct exhaust port 23, the housing is less susceptible to the effects of wind direction (see FIG. 4).

[0029] 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 may be changed as desired. [Explanation of symbols]

[0030] D duct H Housing P Compressor device 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 11 Large exhaust port 12 Small exhaust port 13 Divider 14 Cooling air intake 15 Intake air intake 16 Cooling air intake 20 Collecting duct 21 Large Opening 22 Small opening 23 Duct exhaust outlet 24 Horizontal cylinder part 25 Windbreak pipe 30 Venturi tube 31 Auxiliary opening 32 Horizontal cylinder part 33 Venturi 34 Outlet

Claims

1. 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 the top, 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 is made of a tube that opens above the small exhaust port and has a narrowed diameter in the middle portion; A compressor housing characterized in that the dryer waste heat discharged to the small exhaust port together with the compressor waste heat passing through the Venturi tube is discharged from the duct exhaust port at the same time.

2. 2. The compressor housing according to claim 1, wherein the venturi tube comprises: an auxiliary opening that covers a portion of the large exhaust port; a horizontal cylindrical portion that extends from the large exhaust port side to the small exhaust port side; a venturi having a reduced diameter in an intermediate portion of the horizontal cylindrical portion; and an exhaust port that opens at an end that expands and extends from the venturi.

3. 2. The compressor housing according to claim 1, wherein the collecting duct comprises a horizontal cylindrical portion extending horizontally from the large opening and having the small opening on its lower surface, and the duct exhaust port formed on the upper surface of the end side of the horizontal cylindrical portion.

4. 4. The compressor housing according to claim 3, wherein the collecting duct has a windproof pipe extending upward from the duct outlet.

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