JP2815816B2 - Compressed air dehumidifier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved compressed air dehumidifier, and more particularly, to a compressed air dehumidifier which is small and requires a small installation space.

[0002]

2. Description of the Related Art A refrigerator-type compressed air dehumidifying apparatus cools and dehumidifies a heat exchanger 7 as shown in FIG. 3 and compressed air flowing in a horizontally long cylindrical pressure vessel 70 of the heat exchanger 7, for example. And a refrigerating machine. In the heat exchanger 7, an inlet 71a for taking in compressed air from an air compressor and a supply port 71b for sending dehumidified and dried compressed air to an air appliance or the like are open near both ends. Undried compressed air is supplied to the first diverting channel 72 formed by appropriately dividing the inside of the pressure vessel 70 along the longitudinal direction, and the dry air is provided adjacent to the first diverting channel. A pre-cooling channel 73 for exchanging heat with the pre-cooling channel 73, a second diverting channel 74 provided adjacent to the pre-cooling channel 73, a heat transfer fin 53a, and an evaporator 5e of a refrigerator penetrating therethrough. By passing through the cooling dehumidifier 75 and the reheating channel 76 penetrating through the pre-cooling channel 73 in this order, after being dehumidified and dried, it is further reheated as dry air having an extremely low relative humidity. It is sent out from the supply port.

[0003] Such a heat exchanger is required to facilitate the manufacturing process, improve the heat exchange efficiency while keeping the pressure loss at a constant level, and reduce the size of the entire apparatus including the refrigerator. Therefore, it is inevitable to adopt a horizontally long form in which the heat exchange flow path is in the horizontal direction. The heat exchanger 7 and the refrigerator are provided in a box-shaped case 80 as shown in FIG. 4 for the purpose of waterproofing, dustproofing, danger prevention, design requirements, transportation and installation, and the like. It is generally housed in. In this case, the case 80 is used for the purpose of facilitating the handling of the failure and maintenance of the refrigerator and for maintaining the performance of the refrigerator, particularly, for sufficiently securing the air for cooling the condenser.
The front plate 81 is configured to be detachable from the case 80, with the surface having the larger area as the front surface among the side surfaces.

In the front plate 81, a cooling air inlet 82 to the condenser, which is most important for maintaining the function of the refrigerator, is greatly opened, and a rear plate 83 of a case facing the cooling air inlet 82 is provided.
In addition, an exhaust port having a size corresponding to the capacity of an intake fan attached to the condenser is opened, and left and right side plates 84 and 8 are further provided.
5 are also provided with auxiliary outlets 86,..., Respectively, to secure the intake amount of the air intake 82. Then, as appropriate, the front plate 81 or the side plate 84
The operation panel 87 of the control device of the refrigerator and the heat exchanger 7
A drain trap 88 for discharging condensed water from the inside is provided so as to be exposed from the case.

[0005] When such a refrigerator-type compressed air dehumidifier is installed, first, it is necessary to ensure sufficient cooling air in the case 80, and therefore, the case back plate 83 provided with an exhaust port is provided. X between the device and the wall 110 of the installation location
Are provided at a predetermined distance from each other, and the adjacent equipment (10
0) and the distances y and z from the wall surface need to be sufficiently set so that the exhaust ports 86 and the like that open to the left and right side plates also function sufficiently. In addition, if the space on one side cannot be sufficiently secured due to the installation location, the space on the other surface needs to be longer than necessary to compensate for this.

Further, since the drain trap 88 needs to discharge condensed water to a drain pipe, it is advantageous to provide the drain trap 88 outside the case. This is also provided on the front panel,
The protrusions and drainage pipes are in the way. The same applies to the case provided on the left and right side surfaces. In addition, the compressed air dehumidifier naturally needs to be connected to the air compressor 100, a filter, an existing piping system, and the like. At that time, as shown in FIG. 4, the discharge port 101 of the air compressor 100 and the compressed air introduction port 71a sometimes have to be separated from each other with the supply port 71b interposed therebetween. In such a case, the discharge port 1
01 and the inlet 71a and the inlet 7
The supply pipe 103 connecting the pipe 1b and the piping system is complicated, and the installation work takes time, requires more equipment space, and has a disadvantage that the external appearance is unsightly.

[0007]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned drawbacks of the prior art, requires less installation space, and allows other surfaces except for the front surface to be flush with the wall surface or the side surface of other equipment. The main object is to disclose a compressed air dehumidifier that can be installed. Another object of the present invention is to disclose a compressed air dehumidifier that is easy to maintain without any restriction on installation due to protrusion of a drain port.

[0008]

SUMMARY OF THE INVENTION The first gist of the present invention is that a horizontally long pressure having a refrigerator in a lower half of a box-shaped case and an inlet and a supply port for compressed air in an upper half of the box-shaped case. In a compressed air dehumidifying device in which a heat exchanger in which the evaporator of the refrigerator is housed in a container, one of the front and rear left and right side surfaces of the box-shaped case, one of the opposite side surfaces having a smaller width. The front plate has an opening for the condenser cooling air intake of the refrigerator in the front plate, and the front plate is configured to be detachable from a box-shaped case, and one end of the heat exchanger is near the box-shaped case. From the back plate of the predetermined length, the back plate,
The compressed air dehumidifier is provided with an outlet for the condenser cooling air.

In the above-mentioned device, the side having a smaller area among the side surfaces of the box-shaped case is used as the front, and the front plate that covers the smaller side is detachably used as the maintenance port of the device. When they are arranged side by side, there is no useless unused space generated due to the size relationship between them. In addition, a cooling air inlet to the refrigerator is provided on the front plate, and a discharge port is provided on the back plate facing the front plate. At the same time, a part of the heat exchanger is formed from the back plate by a predetermined length. With the configuration provided so as to protrude to the outside, even if at least two of the other three surfaces except the front surface of the device of the present application are installed close to a wall or other equipment,
Of course, the outlet is not blocked, and the airflow from the outlet is not obstructed. Therefore, the installation space is considerably smaller than that of the conventional device.

[0010] Also, the compressed air introduction port and the supply port are substantially the same even if other equipment to be connected thereto is arranged on the left or right side of the front plate, and are substantially the same. It can be connected, and the degree of freedom of installation is extremely high. Furthermore, if the drain trap is provided below the protruding portion of the heat exchanger as in the device described in the second gist to be described later, piping to the drain trap is easy, the installation space is small, and the device using the drain outlet is required. There is no restriction on the installation direction.

According to a second aspect of the present invention, in the compressed air dehumidifying device defined in the first aspect, a drain trap is provided below a protruding portion of the heat exchanger from the box-shaped case. In the air dehumidifier.

A third aspect of the present invention resides in the compressed air dehumidifying device defined as the first or second aspect, wherein the inside of the box-shaped case is separated into a heat exchanger storage portion and a refrigerator storage portion by a horizontal partition plate. Fractionation, forming a duct from the air inlet to the air outlet, a refrigerant compressor provided on the air inlet side and a refrigerant condenser provided across the duct on the air outlet side and an intake fan Is provided in the compressed air dehumidifier.

In this apparatus, the size of the box-shaped case is determined in accordance with the required volume of the refrigerator storage section, with the main purpose of sufficiently exerting the function of the refrigerator, and the air flowing from the front plate is formed. However, by first cooling the refrigerant compressor, and then cooling the condenser provided on the full duct cross section, the cooling air utilizes the temperature difference between the compressor and the condenser,
To fulfill its purpose efficiently. In addition, since the refrigerant compressor and the related control equipment are arranged on the front side, most of the maintenance can be easily performed by removing the front plate.

[0014]

1 and 2 show an embodiment of a compressed air dehumidifier according to the present invention. Compressed air dehumidifier 1
Inside the box-shaped case 2 by a horizontal partition plate 3
The upper space contains a cylindrical heat exchanger 7, which is exactly the same as the heat exchanger shown in FIG. 3, as a heat exchanger storage section. The heat exchanger 7 itself has the above-described configuration and operation, and is conventionally known.
The heat exchanger 7 is rigidly supported by being fixed to a pair of support frames 6, 6 erected in a U-shape on the bottom surface 2 d of the case 2.

The compressed air inlet 71a of the heat exchanger 7 protrudes upward through the top plate 2b on the side close to the front plate 2a of the case 2, and is provided with a heat exchanger having a compressed air supply port 71b. The vicinity of the end on the side protrudes from the side surface of the case 2 by a predetermined length L. The length L of the protruding portion 7a of the heat exchanger 7 from the case may be such that when the device 1 is actually installed, three sides except the front plate 2a of the device 1 are surrounded by walls or side surfaces of other devices. It is necessary that the exhaust flow from the air discharge port 4b be long enough to be able to flow upward and diffuse without being obstructed by the flow. The difference between the shape and the shape of the protrusion of the heat exchanger is determined experimentally by the outflow space of the exhaust stream generated around the protrusion.

Further, one end of a drain discharge pipe 7b is connected to a drain discharge port 72 opened on the lower surface of the heat exchanger 7. The drain discharge pipe 7b extends along the longitudinal direction of the heat exchanger 7, and the other end penetrates through the back plate 2b and protrudes directly below the protrusion 7a of the heat exchanger 7. A drain trap 8 is connected and fixed to the protruding end of. Of course, the drain trap 8 does not protrude from the back plate in a state exceeding the length L. 10
Is a sealing material for sealing a portion where the heat exchanger 7 projects from the back plate 2b.

As compared with the left and right side plates 2e and 2f provided in parallel with the longitudinal direction of the heat exchanger, the front plate 2a which is parallel to the cross sectional direction of the heat exchanger 7 has a much shorter width and is substantially The case 2 has a vertically long rectangular shape and is detachably attached to the main body of the case 2. On the other hand, in the space below the partition plate 3, as a refrigerator storage portion, the front plate 2 a and the rear plate 2 b
Toward the refrigerant compressor 5a, the accumulator 5b,
Except for the refrigerant evaporator 5e in the heat exchanger, the refrigerant condenser 5c and the intake fan 5d are arranged in this order together with other refrigerator components.

The refrigerator housing section is provided with a cooling air inlet 4a at a portion of the front plate 2a facing the compressor 5a and an opening of a cooling air outlet 4b at the rear plate 2b to thereby provide an air inlet. To form a series of ducts 4 from the outlet. Reference numeral 9 denotes an operation box provided on the upper part of the front plate 2a. The operation box is mounted so that the operation part is exposed on the front plate. The operation box houses operation devices for controlling the operation of the refrigerator. In the above-described embodiment, the heat exchanger is configured such that the air flowing through the pre-cooling passage and the reheating passage exchange heat with each other. However, it is apparent that the present invention is not limited to this. It is. The same applies to the outer shape of the heat exchanger.

[0019]

[Effects] When the above-mentioned device is installed, the front plate 2a
As long as the device is installed so as not to be blocked by another device or a wall, the other side can be installed so as to be closely attached to the wall surface or the side of the other device. For example, as shown in FIG. 4, when installing at a corner portion having two wall surfaces, it is installed in a state of contacting both wall surfaces (in FIG. 4, x and z are substantially 0). , Front 2 of device 1
On the right side of a, the air compressor 100 is installed in close proximity, and there is no problem at all. The cooling air of the refrigerator 5 enters the duct 4 from the intake 4a, first passes around the compressor 5a, cools it, and then passes through the condenser 5c.
After the heat exchange with the refrigerant, the heat exits from the outlet 4b under the protrusion 7a of the heat exchanger 7.

Even if the projecting portion 7a of the heat exchanger 7 is in contact with the wall surface 110, there is a gap between the wall surface and the air outlet 4b.
A gap having a sufficient length L is ensured. Above the gap, a case 2 is provided between the protrusion 7a of the heat exchanger, the wall 110 surrounding the heat exchanger and the air compressor 100, and the heat exchanger protrusion 7a. A series of outflow spaces based on the difference from the size of the exhaust gas are secured, so that the exhaust flow smoothly diffuses upward through this outflow space without stagnation, and the necessary and sufficient cooling air is supplied to the condenser. Can be supplied.

Compressed air dehumidifier 1 according to the above embodiment
In order to provide the heat exchanger 7 as protruding from the case as possible, the size of the refrigerator housing is set to a required limit, and the drain trap 8 is set to the heat exchanger projection 7.
By providing it below a, conventionally, it is not necessary to determine the direction and arrangement of the device in consideration of the projected portion of the drain trap, or to change the mounting surface of the drain trap according to the installation site, Further, the drain trap protruding from the case surface eliminates waste such as extra installation space.

The piping for receiving the drainage from the drain trap can be arranged from either the left or right direction. Furthermore, in the compressed air dehumidifier of the present application, the inlet and the supply port of the compressed air are disposed in the front-rear direction with respect to the front plate, so that the connection devices disposed on the left and right of the present device are These inlets and supply ports have almost equal relational positions, so that when the mutual positions of the devices are reversed, the pipes are not complicated, and the degree of freedom of installation is high.

[Brief description of the drawings]

FIG. 1 is an explanatory cross-sectional view showing one embodiment of a compressed air dehumidifier according to the present invention.

FIG. 2 is an explanatory diagram showing the appearance of the apparatus of FIG. 1 as viewed from the back.

FIG. 3 is an explanatory diagram illustrating an example of a heat exchanger of the compressed air dehumidifier.

FIG. 4 is an explanatory view showing a state in which a conventional compressed air dehumidifier is installed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Compressed air dehumidifier 2 Case 2a Front plate 2b Back plate 3 Partition plate 4 Duct 4a Cooling air inlet 4b Air outlet 5 Refrigerator 5a Refrigerant compressor 5c Refrigerant condenser 6 Support frame 7 Heat exchanger 7a Projection 8 Drain Trap 9 Operation box 10 Sealing material

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model 58-132532 (JP, U) Japanese Utility Model 57-187624 (JP, U) (58) Fields surveyed (Int. Cl. ⁶ , DB name) B01D 53/26

Claims (3)

(57) [Claims] 1. A refrigerator in a lower half of a box-shaped case, and an evaporator of the refrigerator in a horizontally long pressure vessel having an inlet and a supply port of compressed air in an upper half of the box-shaped case. In the compressed air dehumidifying device in which the heat exchangers are stored, respectively, of the front and rear left and right side surfaces of the box-shaped case, one of the opposed side surfaces having a smaller width is set as the front surface, and the front plate is provided with the heat exchanger. A condenser cooling air intake port of the refrigerator is opened, and the front plate is configured to be detachable from the box-shaped case, and one end of the heat exchanger is separated from the back plate of the box-shaped case by a predetermined length. A compressed air dehumidifier, wherein the compressed air dehumidifier is provided with an outlet for the condenser cooling air on the back plate. 2. The compressed air dehumidifier according to claim 1, wherein a drain trap is provided below a protruding portion of the heat exchanger from the box-shaped case. 3. The inside of the box-shaped case is partitioned into a heat exchanger storage section and a refrigerator storage section by a horizontal partition plate to form a duct extending from an air inlet to an air outlet. The compressed air dehumidifier according to claim 1 or 2, further comprising a refrigerant compressor and an intake fan provided with a refrigerant compressor across the duct on the air outlet side.