JP2010149056A - Dehumidifier - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dehumidifier which does not require a large installation space and can be miniaturized. <P>SOLUTION: A refrigeration type dehumidifying part 24 comprising a cooling part for removing water contained in a compressed fluid and a refrigerant compressor for compressing a refrigerant supplied to the cooling part is integrally mounted on a first tank 14 for storing the compressed fluid on the upstream side of the dehumidifying part 24. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a dehumidifying device.

There is an apparatus in which an air compressor, a tank for storing compressed air generated by the air compressor, and an air dryer for dehumidifying the compressed air in the tank are packaged (for example, see Patent Document 1).
JP 2004-300955 A

  The apparatus described above is large and requires a relatively large installation space.

  Therefore, an object of the present invention is to provide a dehumidifying device that can be miniaturized.

  In order to achieve the above object, the present invention provides a refrigeration-type dehumidifying unit comprising a cooling unit that removes moisture contained in a compressed fluid and a refrigerant compressor that compresses refrigerant supplied to the cooling unit. It was integrally mounted on the first tank storing the compressed fluid on the upstream side of the unit.

  According to the present invention, downsizing is possible.

  Hereinafter, a dehumidifying apparatus according to each embodiment of the present invention will be described in detail with reference to the accompanying drawings.

“First Embodiment”
First, a dehumidifying device according to a first embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

  In FIG. 1, the code | symbol 10 shows the dehumidification apparatus which concerns on 1st Embodiment. The dehumidifier 10 has a cylindrical air tank (first tank) 14 that is closed at both ends. The air tank 14 is installed on the floor surface by wheels 15 at the lower four corners so that the axial direction is horizontally oriented. A handle 16 that is gripped by an operator when traveling using the wheel 15 is integrally attached to each upper part on both sides in the axial direction of the air tank 14. Further, an air inlet is connected to an air compressor (not shown) at the upper end on one axial end side of the air tank 14 and introduces compressed air (compressed fluid) generated by the air compressor into the air tank 14. 20 is provided. In addition, the air tank 14 is provided with an openable / closable drain cock (drain drainer) 21 for discharging the water accumulated inside in the lower part in the middle in the axial direction.

  The dehumidifying device 10 has a dehumidifying package (dehumidifying part) 24 fixed in a vertically long state at the top of the air tank 14, and the dehumidifying package 24 has a substantially rectangular parallelepiped shape that forms its outer shape. A cover 25 is provided. The cover 25 is formed with an intake port 26 for taking outside air into the dehumidifying package 24 on one of the side surfaces which are both sides in the direction perpendicular to the axis of the air tank 14. An exhaust port for discharging the taken-out outside air is formed on the other side of the side surfaces. An air outlet 28 is provided on the upper surface of the cover 25 to take out compressed air after dehumidification.

  As shown in FIG. 2, the dehumidifying package 24 stores a connecting pipe 30 having one end connected to the air tank 14 and a heat exchanger 31 connected to the other end of the connecting pipe 30. .

  The heat exchanger 31 is provided with an outlet chamber 33 having the air outlet 28 described above on one end side, and a connecting pipe 30 is connected to one end portion of the main chamber 34 other than the outlet chamber 33 on the outlet chamber 33 side. Yes. The heat exchanger 31 moves the compressed air introduced from the connecting pipe 30 to the other end portion in the main chamber 34 through a zigzag flow path. A refrigerant pipe 36 is disposed inside the center of the main chamber 34 on the other end side, and the refrigerant pipe 36 includes a plurality of fins 37 for heat exchange to constitute a cooling unit 38. . That is, the cooling unit 38 causes heat exchange between the refrigerant passing through the refrigerant pipe 36 and the compressed air passing through the main chamber 34, thereby cooling the compressed air and removing moisture contained therein. A drain trap 40 is provided on the other end side of the main chamber 34 for collecting water generated by cooling the compressed air by the cooling unit 38.

  At the other end of the main chamber 34 opposite to the outlet chamber 33, an internal pipe 42 is opened to guide the compressed air after passing through the main chamber 34 to the outlet chamber 33 by bypassing the main chamber 34. In the internal pipe 42, a large number of fins 43 for heat exchange are attached in a range closer to the outlet chamber 33 than the center in the main chamber 34, thereby constituting a reheat unit 44. That is, the reheating unit 44 causes heat exchange between the compressed air after cooling by the cooling unit 38 passing through the internal pipe 42 and the compressed air before cooling by the cooling unit 38 passing through the inside of the main chamber 34. The compressed air after cooling is reheated with the compressed air before cooling, and the compressed air before cooling is cooled with the compressed air after cooling.

  The dehumidification package 24 stores the above-described refrigerant pipe 36 and a refrigeration refrigerant compressor 47 that compresses the refrigerant supplied to the cooling unit 38 through the refrigerant pipe 36. The refrigerant pipe 36 has one end connected to the suction side of the refrigerant compressor 47 and the other end connected to the discharge side of the refrigerant compressor 47. The refrigerant pipe 36 is provided with a large number of heat exchange fins 48 on the discharge side from the refrigerant compressor 47, and a fan motor 49 for blowing outside air to the fins 48 is provided in the vicinity of the fins 48. ing. The refrigerant pipe 36, the fins 48, and the fan motor 49 constitute a condenser 50 that cools and liquefies the refrigerant. It should be noted that the outside air is drawn in from the intake port 26 by the rotation of the fan motor 49 and is exhausted from the exhaust port on the opposite side (not shown).

  A fan control pressure switch 53 and a high pressure switch 54 for controlling the fan motor 49 are connected to the refrigerant pipe 36 on the downstream side of the condenser 50, and a capillary tube 55 is provided on the downstream side of these. The downstream side is introduced into the heat exchanger 31 described above. In addition, a bypass pipe 57 that bypasses the refrigerant compressor 47 is connected to the refrigerant pipe 36, and an open / close valve 58 is provided in the bypass pipe 57. The fan control pressure switch 53, the high pressure switch 54, the capillary tube 55, the bypass pipe 57 and the opening / closing valve 58 are also stored in the dehumidification package 24.

  A dehumidification package 24 that includes a cooling unit 38 that removes moisture contained in compressed air and a refrigerant compressor 47 that compresses the refrigerant supplied to the cooling unit 38 is a refrigeration type dehumidifier. Such a dehumidifying package 24 is integrally mounted on the air tank 14 that stores compressed air on the upstream side of the dehumidifying package 24.

  In the first embodiment, high-temperature (for example, temperature 90 ° C.) and high-humidity (for example, 100% humidity) compressed air generated by an air compressor (not shown) is introduced into the air tank 14 from the air inlet 20. As a result, it is pre-cooled by natural cooling by the air tank 14 and the temperature is slightly lowered (for example, temperature 80 ° C./humidity 100%). At this time, moisture is generated by dew condensation by cooling the compressed air in the air tank 14, but this moisture is accumulated in the air tank 14, and the drain cock 21 is opened if necessary. It is discharged out of the tank 14.

  The compressed air in the air tank 14 is introduced into the main chamber 34 of the heat exchanger 31 of the dehumidification package 24 through the connection pipe 30, and the compressed air after cooling passing through the internal pipe 42 as will be described later. The heat is exchanged by the fins 43 of the reheating unit 44 and cooled, and further the heat is exchanged with the refrigerant by the fins 37 of the cooling unit 38 and forcedly cooled to lower the temperature (for example, temperature 20 ° C./humidity 100%). ). Also at this time, moisture is generated in the main chamber 34 of the heat exchanger 31 due to condensation of compressed air. This moisture is discharged outside by the drain trap 40.

  Then, the compressed air that has been cooled and dehumidified by the cooling unit 38 passes from the main chamber 34 through the internal pipe 42, is heat-exchanged with the compressed air before cooling in the reheating unit 44, and is heated to almost the ambient temperature, thereby reducing the humidity. (For example, humidity 30%). Thereby, the compressed air discharged from the air outlet 28 through the outlet chamber 33 becomes dry compressed air (for example, pressure dew point temperature 20 ° C. and humidity 30%).

  On the other hand, the refrigerant whose temperature has risen due to heat exchange with the compressed air in the cooling unit 38 is compressed by the refrigerant compressor 47 via the refrigerant pipe 36 and discharged toward the heat exchanger 31 again. Then, after being cooled and liquefied by the condenser 50, it is introduced into the heat exchanger 31. Also, the outside air blown to the fins 48 of the condenser 50 to cool the refrigerant is introduced into the dehumidification package 24 from the intake port 26 by the rotation of the fan motor 49, and after cooling the fins 48, the opposite side (not shown) is shown. Exhaust from the exhaust port.

  According to the first embodiment described above, the refrigeration including the heat exchanger 31 including the cooling unit 38 that removes moisture contained in the compressed air and the refrigerant compressor 47 that compresses the refrigerant supplied to the cooling unit 38. Since the dehumidification package 24 of the type is integrally mounted on the air tank 14 that stores the compressed air on the upstream side, the size can be reduced, the installation space can be reduced, and the installation location can be easily changed. Become.

  Moreover, since the dehumidification package 24 including the heat exchanger 31 is mounted on the air tank 14, the connecting pipe 30 that connects the air tank 14 and the heat exchanger 31 can be shortened and simplified.

  In addition, since the heat exchanger 31, the refrigerant compressor 47, the condenser 50, and the like having the cooling unit 38 are stored in the dehumidification package 24, it is difficult to disturb the operator and can be prevented from being damaged due to contact with an external obstacle. .

  Further, since the compressed air is introduced into the air tank 14 before being cooled by the cooling unit 38, it can be pre-cooled by the air tank 14. Therefore, for example, even when the outside air temperature is high and the compressed air is high, the inlet temperature to the cooling unit 38 can be lowered, and the load on the cooling unit 38 can be reduced.

  Further, since the drain cock 21 is provided in the air tank 14 and drainage is performed, moisture generated by the precooling by the air tank 14 can be easily discharged from the air tank 14.

  Moreover, since the wheel 15 and the handle 16 are provided in the air tank 14, it can move easily.

“Second Embodiment”
Next, a dehumidifying apparatus according to a second embodiment of the present invention will be described below with a focus on differences from the first embodiment mainly with reference to FIGS. 3 and 4. In addition, the part similar to 1st Embodiment is abbreviate | omitting the description as the same name and the same code | symbol.

  In the second embodiment, as shown in FIG. 3, the dehumidification package 24 described above is integrally mounted on the upper portion of the air tank 14 on one side in the axial direction in a vertically long state. A pre-cooling package (pre-cooling unit) 61 is integrally mounted on the upper part on the other side in the axial direction of 14 in a vertically long state. That is, the dehumidifying package 24 and the precooling package 61 are arranged in the axial direction and mounted on the upper portion of the air tank 14.

  The pre-cooling package 61 has a substantially rectangular parallelepiped cover 62 that constitutes its outer shape. The cover 62 is formed with an intake port 63 for taking outside air into the precooling package 61 on one side surface of both sides of the air tank 14 in the direction orthogonal to the axis. An exhaust port for discharging the taken-out outside air is formed on the other side of the side surfaces.

  In addition, an air inlet 20 is provided not on the air tank 14 but on the upper surface of the cover 62 so that compressed air generated by an air compressor (not shown) is introduced into the precooling package 61.

  As shown in FIG. 4, the pre-cooling package 61 has an introduction pipe 67 having one end side as the air inlet 20 and the other end side connected to the air tank 14, and a number of fins for heat exchange attached to the introduction pipe 67. A pre-cooling unit 70 including a fan 68 and a fan motor 69 provided near the fin 68 for blowing outside air to the fin 68 is stored. That is, the pre-cooling package 61 is on the upstream side of the dehumidification package 24 and cools in advance by exchanging high-temperature compressed air with the outside air.

  In the second embodiment, high-temperature (eg, 90 ° C.) high-humidity (eg, 100% humidity) compressed air generated by an air compressor (not shown) is introduced into the pre-cooling package 61 from the air inlet 20, and the fan motor The heat is exchanged between the outside air and the fins 68 by 69 and cooled to decrease the temperature (for example, temperature 70 ° C./humidity 100%) and introduced into the air tank 14. Then, the compressed air is precooled even by natural cooling by the air tank 14, and the temperature is further lowered (for example, temperature 60 ° C. and humidity 100%). At this time, the cooling in the precooling package 61 and the cooling in the air tank 14 cause moisture to be generated in the compressed air due to dew condensation. However, this moisture is accumulated in the air tank 14 and, if necessary, the drain cock 21. Is opened to the outside from the air tank 14.

  The compressed air in the air tank 14 is introduced into the main chamber 34 of the heat exchanger 31 of the dehumidification package 24 through the connection pipe 30, and the compressed air after cooling passing through the internal pipe 42 as will be described later. Then, heat is exchanged by the fins 43 of the reheating unit 44 and cooled, and further, heat is exchanged with the refrigerant by the fins 37 of the cooling unit 38 and is forcibly cooled to lower the temperature (for example, temperature 10 ° C./humidity 100%). ). Also at this time, moisture is generated in the main chamber 34 of the heat exchanger 31 due to condensation of compressed air. This moisture is discharged outside by the drain trap 40.

  Then, the compressed air that has been cooled and dehumidified by the cooling unit 38 passes from the main chamber 34 through the internal pipe 42, is heat-exchanged with the compressed air before cooling in the reheating unit 44, and is heated to almost the ambient temperature, thereby reducing the humidity. (For example, humidity 18%). Thereby, the compressed air discharged from the air outlet 28 becomes dry compressed air (for example, pressure dew point temperature 10 ° C., humidity 18%).

  On the other hand, the refrigerant whose temperature has risen due to heat exchange with the compressed air in the cooling unit 38 is compressed by the refrigerant compressor 47 via the refrigerant pipe 36 and discharged toward the heat exchanger 31 again. Then, after being cooled and liquefied by the condenser 50, it is introduced into the heat exchanger 31. Also, the outside air blown to the fins 48 of the condenser 50 to cool the refrigerant is introduced into the dehumidification package 24 from the air inlet 26 by the rotation of the fan motor 49, and after cooling the fins 48, the opposite side (not shown) is shown. Exhaust from the exhaust port. Further, the outside air blown to the fins 68 of the precooling unit 70 for precooling is introduced into the precooling package 61 from the intake port 63 by the rotation of the fan motor 69, and after cooling the fins 68, an exhaust port (not shown) on the opposite side. Exhausted from.

  According to the second embodiment described above, in addition to the dehumidifying package 24, the precooling package 61 that is upstream of the dehumidifying package 24 and heat-cools the high-temperature compressed air with the outside air to cool it in advance. Since it is integrally mounted on the device, the size can be reduced, the installation space can be reduced, and the installation location can be easily changed.

  Further, since the compressed air can be cooled by the pre-cooling package 61 and further cooled by the air tank 14 before being cooled by the cooling unit 38, the cooling can be performed even when the outside air temperature is high and the compressed air is hot. The inlet temperature to the part 38 can be further lowered, and the load on the cooling part 38 can be further reduced.

  Further, since the pre-cooling unit 70 is stored in the pre-cooling package 61, it is difficult for an operator to be disturbed, and damage due to contact with an external obstacle can be prevented.

  Further, since the drain cock 21 is provided in the air tank 14 and drainage is performed, moisture generated by precooling by the precooling package 61 and the air tank 14 can be easily discharged from the air tank 14.

  In the second embodiment, the precooling package 61 may be mounted on the air tank 14, and the dehumidifying package 24 may be mounted on the precooling package 61. If comprised in this way, even if it is a case where both the pre-cooling package 61 and the dehumidification package 24 are provided, an installation space can be reduced.

“Third Embodiment”
Next, a dehumidifying apparatus according to a third embodiment of the present invention will be described below with a focus on differences from the second embodiment mainly with reference to FIGS. In addition, the part similar to 2nd Embodiment is abbreviate | omitted as the same name and the same code | symbol.

  In the third embodiment, as shown in FIG. 5, the air tank 14 is arranged in the horizontal direction, and another air tank (second tank) 71 is connected in a contact state (a tie-in state). The air tank 14 and the air tank 71 are arranged in parallel with each other in the axial direction, and wheels 15 are attached to the front and rear of the air tank 14 and the front and rear of the air tank 71.

  A precooling / dehumidification package (dehumidification part, precooling part) 72 is fixed to the upper part of the air tank 14 and the air tank 71 in a horizontally long state in the horizontal direction. The pre-cooling / dehumidification package 72 has a substantially rectangular parallelepiped cover 73 that forms the outer shape of the pre-cooling / dehumidification package 72. In addition, an intake port 74 for taking in outside air is formed in the pre-cooling / dehumidification package 72, and although not shown, an intake port for taking in outside air is formed on the other side surface of both sides. Yes. Further, the cover 73 is formed with an exhaust port 75 on the upper surface for exhausting the taken outside air.

  In addition, an air inlet 20 is provided not on the air tank 14 but on the upper surface of the cover 73 so as to introduce compressed air generated by an air compressor (not shown) into the precooling / dehumidification package 72. In addition, an air outlet 28 for taking out compressed air after dehumidification is provided in the upper part of the air tank 71.

  In the precooling / dehumidification package 72, the connection pipe 30, refrigerant pipe 36, refrigerant compressor 47, condenser 50, fan control pressure switch 53, high pressure pressure shown in FIG. A switch 54, a capillary tube 55, a bypass pipe 57 and an on-off valve 58, a heat exchanger 78 different from the second embodiment, and a precooling unit 70 stored in the precooling package 61 in the second embodiment are provided. Yes.

  A connecting pipe 30 is connected to one end of a chamber 79 in the heat exchanger 78 of the third embodiment. The heat exchanger 78 moves the compressed air introduced from the connecting pipe 30 to the other end in the chamber 79 through a zigzag flow path. The chamber 79 is provided with a cooling unit 38 having the refrigerant pipe 36 and the fins 37 described above. The cooling unit 38 also performs heat exchange between the refrigerant passing through the refrigerant pipe 36 and the compressed air passing through the chamber 79, thereby cooling the compressed air and removing moisture contained therein. The drain trap 40 described above is provided on the other end side of the chamber 79.

  The other end of the chamber 79 is connected to a connecting pipe 81 extending to an air tank 71 for storing compressed air after passing through the chamber 79, that is, compressed air cooled and dehumidified by the cooling unit 38. . That is, the heat exchanger 78 of the third embodiment is not provided with the reheat unit 44 of the first and second embodiments. The air tank 14 is heated by introducing relatively high-temperature compressed air, and as a result, the air tank 71 in contact with the air tank 14 is heated. Thereby, the air tank 71 reheats the introduced compressed air.

  Here, the condenser 50 and the precooling unit 70 that are stored together in one precooling / dehumidification package 72 constitute one condenser unit 80.

  In the third embodiment, high-temperature (for example, temperature 90 ° C.) and high-humidity (for example, 100% humidity) compressed air generated by an air compressor (not shown) is introduced from the air inlet 20 to the precooling / dehumidification package 72, The fan motor 69 of the pre-cooling unit 70 exchanges heat with the outside air by the fins 68 and is cooled to cool the temperature (for example, temperature 70 ° C./humidity 100%) and is introduced into the air tank 14. Then, the compressed air is also pre-cooled in the air tank 14, and the temperature is further lowered (for example, temperature 55 ° C./humidity 100%). Here, since the air tank 14 is in contact with the air tank 71 in a low temperature state by introducing the compressed air after cooling as described later, the compressed air introduced into the air tank 14 is It will be cooled more. The cooling in the pre-cooling unit 70 and the cooling in the air tank 14 cause moisture to be generated in the compressed air due to dew condensation. However, this moisture is accumulated in the air tank 14, and the drain cock 21 is By being opened, the air is discharged from the air tank 14.

  The compressed air in the air tank 14 is introduced into the chamber 79 of the heat exchanger 78 through the connection pipe 30, and heat is exchanged with the refrigerant in the fins 37 of the cooling unit 38 and is forcibly cooled. The temperature falls (for example, temperature 7 ° C./humidity 100%). At this time as well, moisture is generated in the chamber 79 of the heat exchanger 78 due to condensation of compressed air, but this moisture is discharged outside by the drain trap 40.

  The compressed air that has been cooled and dehumidified by the cooling unit 38 passes through the connecting pipe 81 and is introduced into the air tank 71. The compressed air introduced into the air tank 71 undergoes heat exchange with the air tank 14 into which the high-temperature compressed air is introduced, so that the temperature is substantially ambient and the humidity is reduced (for example, humidity is 15%). Thereby, the compressed air discharged from the air outlet 28 becomes dry compressed air (for example, pressure dew point temperature 7 ° C., humidity 15%).

  On the other hand, the refrigerant whose temperature has risen due to heat exchange with the compressed air in the cooling unit 38 is compressed by the refrigerant compressor 47 via the refrigerant pipe 36 and discharged again toward the heat exchanger 78. Then, after being cooled and liquefied by the condenser 50, it is introduced into the heat exchanger 78. Also, the outside air blown to the fins 48 of the condenser 50 to cool the refrigerant is introduced into the precooling / dehumidification package 72 from the air inlets 74 on both sides by the rotation of the fan motor 49, and after cooling the fins 48, The exhaust port 75 is exhausted. In addition, the outside air blown to the fins 68 of the precooling unit 70 for precooling is introduced into the precooling / dehumidification package 72 from the suction ports 74 on both side surfaces by the rotation of the fan motor 69, and after cooling the fins 68, The air is exhausted from the exhaust port 75.

  According to the third embodiment described above, the precooling / dehumidification package 72 is integrally mounted on the air tanks 14 and 71 arranged side by side in the horizontal direction, so that the size can be reduced and the installation space is reduced. Furthermore, the installation location can be easily changed.

  Further, when the compressed air after dehumidification is introduced into the air tank 71, the compressed air in the air tank 71 can be reheated by heat transfer from the air tank 14 that is provided side by side and into which the high-temperature compressed air is introduced. Therefore, the configuration for reheating can be simplified.

  In addition to the heat exchanger 78 having the cooling unit 38, the refrigerant compressor 47, the condenser 50, and the like, the pre-cooling unit 70 is stored in the pre-cooling / dehumidification package 72. It is also possible to prevent damages due to contact with the.

“Fourth Embodiment”
Next, a dehumidifying apparatus according to a fourth embodiment of the present invention will be described below mainly with respect to differences from the third embodiment with reference to FIGS. 7 and 8. In addition, the part similar to 3rd Embodiment is abbreviate | omitted as the same name and the same code | symbol.

  In the fourth embodiment, as shown in FIG. 7, only one air tank 14 is provided as an air tank, and a precooling / dehumidification package 72 similar to that of the third embodiment is long above and below the air tank. It is fixed vertically. The cover 73 constituting the outer shape of the precooling / dehumidification package 72 has an intake port for taking outside air into the precooling / dehumidification package 72 on one side surface of both sides in the direction orthogonal to the axis of the air tank 14. 74 is formed, and although not shown, an exhaust port for discharging the taken-in outside air is formed on the other side surface.

  In addition, an air inlet 20 is provided on the upper surface of the cover 73 so as to introduce compressed air generated by an air compressor (not shown) into the precooling / dehumidification package 72. In addition, an air outlet 28 for taking out compressed air after dehumidification is provided in the upper part of the air tank 14.

  As in the third embodiment, the precooling / dehumidification package 72 includes the connecting pipe 30, the refrigerant pipe 36, the refrigerant compressor 47, the condenser 50, the fan control pressure switch 53, the high pressure switch 54, and the capillary tube 55 shown in FIG. A bypass pipe 57, an on-off valve 58, a heat exchanger 78, and a pre-cooling unit 70 are provided.

  In the fourth embodiment, the connecting pipe 81 that guides the compressed air after cooling by the cooling unit 38 passes through the air tank 14, and then protrudes from the air tank 14 to constitute the air outlet 28. A large number of fins 82 are attached to the portion of the connecting pipe 81 that is disposed in the air tank 14 to form a reheat unit 83. That is, since relatively high-temperature compressed air is introduced into the air tank 14 from the air inlet 20, the relatively high-temperature compressed air passes through the connection pipe 81 via the fins 82 and the connection pipe 81. The air will be reheated.

  In the fourth embodiment, high-temperature (for example, temperature 90 ° C.) and high-humidity (for example, 100% humidity) compressed air generated by an air compressor (not shown) is introduced from the air inlet 20 to the precooling / dehumidification package 72, The fan motor 69 of the pre-cooling unit 70 exchanges heat with the outside air by the fins 68 and is cooled to cool the temperature (for example, temperature 70 ° C./humidity 100%) and is introduced into the air tank 14. Then, the compressed air is also precooled in the air tank 14 and the temperature is further lowered (for example, temperature 55 ° C./humidity 100%). Here, in the air tank 14, the compressed air after cooling passes through the connecting pipe 81 as will be described later, and this compressed air exchanges heat through the fins 82, so that it is precooled. The compressed air introduced from the unit 70 into the air tank 14 is further cooled. The cooling in the pre-cooling unit 70 and the cooling in the air tank 14 cause moisture to be generated in the compressed air due to condensation, and this moisture is accumulated in the air tank 14, and if necessary, the drain cock 21 is It is discharged from the air tank 14 by being opened.

  The compressed air in the air tank 14 is introduced into the chamber 79 of the heat exchanger 78 through the connection pipe 30, and heat is exchanged with the refrigerant in the fins 37 of the cooling unit 38 and is forcibly cooled. The temperature falls (for example, temperature 7 ° C./humidity 100%). At this time as well, moisture is generated in the chamber 79 of the heat exchanger 78 due to condensation of compressed air, but this moisture is discharged outside by the drain trap 40.

  The compressed air that has been cooled and dehumidified by the cooling unit 38 passes through the connection pipe 81 and passes through the air tank 14. The compressed air passing through the air tank 14 exchanges heat with the relatively high-temperature compressed air introduced into the air tank 14, becomes almost the ambient temperature, and the humidity decreases (for example, 15% humidity). Thereby, the compressed air discharged from the air outlet 28 becomes dry compressed air (for example, pressure dew point temperature 7 ° C., humidity 15%).

  On the other hand, the refrigerant whose temperature has risen due to heat exchange with the compressed air in the cooling unit 38 is compressed by the refrigerant compressor 47 via the refrigerant pipe 36 and discharged again toward the heat exchanger 78. Then, after being cooled and liquefied by the condenser 50, it is introduced into the heat exchanger 78. Also, the outside air blown to the fins 48 of the condenser 50 to cool the refrigerant is introduced into the precooling / dehumidification package 72 from the intake port 74 on one side by the rotation of the fan motor 49, and after cooling the fins 48, It is exhausted from the exhaust port on the other side. Also, the outside air blown to the fins 68 of the precooling unit 70 for precooling is introduced into the precooling / dehumidification package 72 from the intake port 74 on one side by the rotation of the fan motor 69, and after cooling the fins 68, It is exhausted from the side exhaust port.

  According to the fourth embodiment described above, since the pre-cooling / dehumidification package 72 is integrally mounted on the air tank 14, the size can be reduced, the installation space can be reduced, and the installation location can be changed. Becomes easy.

  Further, when the dehumidified compressed air is passed through the air tank 14 by the connecting pipe 81, relatively high-temperature compressed air is introduced into the air tank 14, and heat exchange with this relatively high-temperature compressed air is performed. Thus, since the compressed air in the connection pipe 81 can be reheated, the configuration for reheating can be simplified.

  In the first to fourth embodiments, the case of dehumidifying high-temperature and high-humidity compressed air generated by the air compressor connected to the air compressor has been described. However, in the case of dehumidifying other compressed fluids It is also applicable to.

It is a perspective view which shows the dehumidification apparatus which concerns on 1st Embodiment of this invention. It is a block diagram which shows the dehumidification apparatus which concerns on 1st Embodiment of this invention. It is a perspective view which shows the dehumidification apparatus which concerns on 2nd Embodiment of this invention. It is a block diagram which shows the dehumidification apparatus which concerns on 2nd Embodiment of this invention. It is a perspective view which shows the dehumidification apparatus which concerns on 3rd Embodiment of this invention. It is a block diagram which shows the dehumidification apparatus which concerns on 3rd Embodiment of this invention. It is a perspective view which shows the dehumidification apparatus which concerns on 4th Embodiment of this invention. It is a block diagram which shows the dehumidification apparatus which concerns on 4th Embodiment of this invention.

Explanation of symbols

10 Dehumidifier 14 Air tank (first tank)
15 Wheel 16 Handle 21 Drain cock (without drain)
24 Dehumidification package (dehumidification part)
38 Cooling unit 47 Refrigerant compressor 61 Precooling package (precooling unit)
71 Air tank (second tank)
72 Pre-cooling / dehumidification package (dehumidification part, pre-cooling part)

Claims (8)

A refrigeration-type dehumidifying unit comprising a cooling unit for removing moisture contained in the compressed fluid and a refrigerant compressor for compressing the refrigerant supplied to the cooling unit;
A first tank for storing the compressed fluid upstream of the dehumidifying unit;
The dehumidifying device, wherein the dehumidifying unit is integrally mounted on the first tank.   An upstream side of the dehumidifying unit is provided with a pre-cooling unit that pre-cools the hot compressed fluid by exchanging heat with the outside air, and the pre-cooling unit is integrally mounted on the first tank. The dehumidifying device according to claim 1, wherein   The dehumidifying device according to claim 2, wherein the precooling unit is mounted on the first tank, and the dehumidifying unit is mounted on the precooling unit.   The dehumidifying device according to any one of claims 1 to 3, wherein a second tank that stores the compressed fluid cooled and dehumidified by the dehumidifying unit is provided on a downstream side of the dehumidifying unit. .   The dehumidifying apparatus according to claim 4, wherein the first tank and the second tank are arranged side by side in a horizontal direction.   The dehumidifying device according to any one of claims 1 to 5, wherein at least one of a wheel and a handle is provided in the first tank.   The dehumidifying device according to any one of claims 1 to 6, wherein the first tank is provided with a drain.   The dehumidifying device according to any one of claims 1 to 7, wherein the dehumidifying unit is stored in a package.

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