JPWO2008096614A1 - Evaporative liquid evaporative cooling system - Google Patents

Abstract

The evaporating liquid is boiled and evaporated at a pressure lower than the atmospheric pressure, and the evaporating liquid in the evaporating chamber is supplied to the load side 22 as a cooling source for indirect cooling and then circulated back to the evaporating chamber. In an evaporative cooling apparatus comprising a circulation means, a vapor compressor 30 for compressing steam generated in the evaporation chamber 9, and a condensation chamber 10 for condensing the steam compressed by the steam compressor, the apparatus can be reduced in size and weight. , To reduce the price. Of the double container 1 composed of the outer container 2 and the inner container 3 disposed in the outer container 2, the inside of the inner container is connected to one of the evaporation chamber 9 and the condensation chamber 10, and the outer container 2 A gap between the inner container 3 and the inner chamber 3 is the other of the evaporation chamber 9 and the condensation chamber 10.

Description

  The present invention cools an evaporable liquid such as water and supplies the liquid as a cooling source to a load side that performs indirect heat exchange such as a cooling place. The present invention relates to an evaporative cooling apparatus in which cooling is performed by boiling evaporation at a reduced pressure lower than atmospheric pressure.

Patent Document 1 as a prior art includes:
“Evaporable liquid such as water is cooled by boiling and evaporating in an evaporation chamber at a pressure lower than atmospheric pressure, and this cooled evaporative liquid is used as a cooling source for indirect cooling on the load side such as a cooling point. Indirect cooling on the load side is performed by circulating such that it is returned to the evaporation chamber and cooled again after being supplied, while steam generated by boiling evaporation in the evaporation chamber is converted into steam from a roots compressor or the like. An evaporative cooling system that compresses with a compressor and introduces the compressed vapor into the condensation chamber for condensation. "
Is described.

And according to this prior art evaporative cooling device, a temperature difference corresponding to the compression ratio in the case of compressing steam with a vapor compressor can be provided between the evaporation chamber and the condensation chamber. The temperature of the evaporating liquid supplied as a cooling source for indirect cooling to the load side, such as a cooling location, can be significantly lower than the temperature of the condensation chamber by the temperature difference.
Japanese Patent Application Laid-Open No. 2006-97989

  However, the evaporative cooling device of the prior art has a configuration in which the evaporation chamber and the condensation chamber are made into separate separate containers, and these two containers are arranged side by side. , Since a large installation space is required for arranging two independent containers, there is a problem that the apparatus is greatly increased in size, and by arranging two independent containers side by side, weight and There was also the problem of incurring price increases.

  In addition, since the temperature of the evaporation chamber is lower than that of the condensing chamber and the temperature difference with the atmospheric temperature is large, the evaporation chamber is greatly affected by the thermal effect from the atmosphere. In order to avoid a decrease in thermal efficiency due to the thermal influence from the atmosphere, there has been a problem that the outside of the evaporation chamber must be surrounded by a heat insulating material.

  It is a technical object of the present invention to solve these problems and to greatly reduce the size and weight of the apparatus.

In order to achieve this technical problem, claim 1
“Evaporation chamber that evaporates and evaporates liquid at a pressure lower than atmospheric pressure, and circulation that circulates in such a way that the evaporative liquid in this evaporation chamber is supplied to the load side as a cooling source for indirect cooling and then returned to the evaporation chamber. An evaporative cooling device comprising: a means, a steam compressor for compressing the steam generated in the evaporation chamber; and a condensation chamber for condensing the steam compressed by the steam compressor,
Of the double container composed of the outer container and the inner container disposed therein, the inner container is disposed between the outer container and the inner container in either the evaporation chamber or the condensation chamber. A gap is formed in one of the evaporation chamber and the condensation chamber. "
It is characterized by that.

Claim 2
“In the claim 1, the inside of the inner container of the double container is formed in the evaporation chamber, and the gap between the outer container and the inner container is formed in the condensing chamber.”
It is characterized by that.

Claim 3
“In the first aspect of the present invention, the outer container is an outer cylinder configured in a cylindrical shape with both ends open, and the inner container is an inner cylinder configured in a cylinder with both ends opened, The openings at both ends of the body and the openings at both ends of the inner cylinder are simultaneously closed by the outer cylinder and the cover plates disposed at both ends of the inner cylinder. "
It is characterized by that.

Claim 4
“In the third aspect of the present invention, the outer cylindrical body, the inner cylindrical body, and the two cover plates are configured to be disassembled from each other.”
It is characterized by that.

Claim 5
“In the third aspect of the present invention, the outer cylinder body and the inner cylinder body are arranged in a vertical direction, and one of the lid plates at both ends of the outer cylinder body and the inner cylinder body is disposed on the upper lid plate. An evaporative liquid inlet to the chamber and a vapor outlet from the evaporation chamber, a vapor inlet to the condensing chamber and a cooling fluid inlet are provided, while the other lid plate located on the lower side has an evaporation An evaporative liquid outlet from the chamber and a cooling fluid outlet from the condensation chamber are provided. "
It is characterized by that.

Claim 6
“In the description of claim 5, the inner cylinder is located at a position eccentric with respect to the outer cylinder when viewed in the axial direction.”
It is characterized by that.

Claim 7
“In the claim 3 or 4, the outer cylinder body and the inner cylinder body are disposed sideways, and the vapor compressor is disposed on an upper surface of the outer cylinder body of the double container. , Either or both of the lid plates are provided with vapor and fluid ports for the evaporation chamber and the condensation chamber. "
It is characterized by that.

Claim 8
"In the description of claim 7, the gap between the outer cylinder and the inner cylinder is formed in the evaporation chamber, the interior of the inner cylinder is formed in the condensation chamber, and further, the gap is formed on the upper surface of the outer cylinder. , A steam outlet to the steam compressor is provided. "
It is characterized by that.

Claim 9
“In the description of claim 7, the inner cylindrical body is located at a portion eccentrically downward with respect to the outer cylindrical body as viewed from the axial direction.”
It is characterized by that.

Claim 10
“In the description of any one of claims 7 to 9, a plurality of steam compressors are mounted on the upper surface of the outer cylinder side by side in the axial direction of the outer cylinder, It is configured to be driven by power transmission from a power source. "
It is characterized by that.

  According to the configuration of claim 1, the inner container of the double container may be an evaporation chamber for evaporating the evaporating liquid in the interior, or a condensation chamber for condensing the vapor therein. On the other hand, in the double container, the gap between the outer container and the inner container should be a condensation chamber for condensing vapor or an evaporation chamber for boiling evaporation of evaporating liquid. Can do.

  As a result, the installation space occupied by the evaporating chamber and the condensing chamber in the evaporative cooling device is much larger than when arranging both the evaporating chamber and the condensing chamber as separate independent containers as in the prior art. Since the size can be reduced, the overall size of the apparatus can be reliably reduced.

  In addition, since the double container is used, it is possible to reliably reduce the weight and the price of the apparatus as compared with the prior art.

  When the evaporation chamber and the condensation chamber are configured in a double container, the configuration according to claim 2 is used to surround the evaporation chamber having the lowest temperature with the condensation chamber having a higher temperature than the evaporation chamber. Therefore, the thermal influence (temperature rise) that the evaporation chamber receives from the atmosphere can be reliably shut off in the condensation chamber, so that the thermal efficiency can be improved and the heat insulation for the evaporation chamber can be eliminated. Can be configured simply.

  According to the configuration of claim 3, since the double container can be constituted by the outer cylinder body, the inner cylinder body and the two cover plates, the structure is simple, the size and weight can be reduced, and the production can be achieved. Can be achieved and a low price can be achieved.

  In the structure of claim 3, by adopting the structure of claim 4, all the parts are separated and not only can each part be easily manufactured, but also can be easily assembled and disassembled. Therefore, the manufacturing cost can be further reduced, and the maintainability such as cleaning and inspection for removing the scale can be greatly improved.

  Moreover, in the structure of the said Claim 3, by setting it as the structure of Claim 5, the inlet / outlet of various fluids with respect to the inner cylinder which comprises an inner container among double containers, ie, the inlet / outlet of an evaporative liquid, Connecting the steam inlet / outlet and the cooling fluid inlet / outlet through the outer cylinder constituting the outer container and connecting them to the inner cylinder without connecting them to both lid plates. Since it can be reliably achieved by a simple configuration of providing, the above-described apparatus can be reduced in size and cost.

  In the fifth aspect of the present invention, by adopting the structure of the sixth aspect, the gap between the inner cylinder and the outer cylinder can be widened on one side by the amount of the eccentricity. , Evaporative liquid boiling evaporation or vapor condensation can be reliably performed with high volumetric efficiency, and the vapor inlet and outlet for the evaporation chamber and the condensation chamber are provided in the widened section as described above. Since the diameter of the entrance / exit can be increased, the steam flow resistance can be reduced, and as a result, the thermal efficiency can be improved.

  Next, according to the structure of claim 7, since the space on the upper surface of the double container can be effectively used for the installation of the steam compressor, further downsizing and weight reduction of the entire apparatus can be surely achieved. Connecting the inlets and outlets of various fluids to the evaporation chamber or the condensing chamber in the cylindrical body allows these outlets and inlets to be connected to the inner cylindrical body through the outer cylindrical body surrounding the inner cylindrical body. Can be reliably achieved by a simple configuration in which the cover plate is provided on the cover plate, so that the above-described apparatus can be further reduced in size and the apparatus can be significantly reduced in price.

  By the way, when increasing the heat load of the evaporating liquid for cooling supplied to the load side, or when dealing with fluctuations in the heat load, a plurality of vapor compressors from the evaporation chamber to the condensation chamber are provided. It is preferable to adopt a configuration of

  In this case, by arranging the outer cylinder and the inner cylinder constituting the double container sideways, the length of the outer cylinder and the inner cylinder in the axial direction can be increased or decreased to Since a plurality of steam compressors can be arranged in the axial direction on the upper surface, the construction of a plurality of steam compressors can be achieved extremely easily without causing a significant increase in installation space.

  In the seventh aspect of the present invention, the steam duct from the evaporation chamber to the vapor compressor can be significantly shortened by the configuration of the eighth aspect, or the vapor compressor is directly connected to the vapor outlet from the evaporation chamber. Because it can be connected to a device, it can help reduce the size and weight of the device.

  Further, in the configuration of claim 7, by adopting the configuration of claim 9, the space in the upper gap in the evaporation chamber can be widened, so that the separation of vapor and liquid here can be improved. There is.

  Furthermore, in the configuration of the seventh aspect, the configuration of the tenth aspect enables driving each of the vapor compressors when a plurality of vapor compressors from the evaporation chamber to the condensation chamber are used. In addition to simplifying the configuration, it is possible to reduce the size and weight of the steam compressor as compared with the case where each steam compressor is driven separately.

Embodiments of the present invention will be described below with reference to the drawings.
[First Embodiment]
1 to 5 show a first embodiment.

  In these drawings, reference numeral 1 denotes a double container constituting an evaporation chamber and a condensation chamber.

  This double container 1 is composed of a hard synthetic resin outer cylindrical body 2 configured in a cylindrical shape or a rectangular tube shape having a diameter D so as to open both ends, and a cylinder having a small diameter d so as to open both ends. An inner cylinder 3 made of a hard synthetic resin configured in a mold or a rectangular cylinder, and the latter inner cylinder 3 is appropriately disposed between the outer cylinder 2 and the outer cylinder 2 in the former. It is inserted so as to form a gap.

  The outer cylinder body 2 and the inner cylinder body 3 are arranged vertically so that their axes are vertical or substantially vertical.

  The double container 1 includes one lid plate 4 made of hard synthetic resin for simultaneously closing the opening at the upper end of the outer cylinder 2 and the opening at the upper end of the inner cylinder 3. , And the other cover plate 5 made of hard synthetic resin for simultaneously closing the opening at the lower end of the outer cylinder 2 and the opening at the lower end of the inner cylinder, and the other cover plate 5 constitutes the bottom plate is doing.

  A plurality of (four) stay bolts disposed on the outer periphery of the one cover plate 4 and the other cover plate 5 with the outer cylinder 2 and the inner cylinder 3 being sandwiched therebetween. The double container 1 is assembled by being detachably fastened to each other at 6.

  When assembling, the outer cylindrical body 2 and the inner cylindrical body 3 between the upper end surface and the lower surface of the one cover plate 4, and the lower end surface of the outer cylindrical body 2 and the inner cylindrical body 3 and the other cover plate. As shown in FIG. 3, sealing gaskets 7 and 8 are inserted between the upper surfaces of 5.

  Thus, an evaporation chamber 9 that seals the inside of the inner cylinder 3 is formed in a condensing chamber 10 that seals a gap between the outer cylinder 3 and the inner cylinder 4.

  In this case, instead of adopting a configuration in which the one lid plate 4 and the bottom plate 5 are detachably fastened to each other by a stay bolt 6, both the lid plates 4 and 5 are not shown. , By detachably fastening with a bolt or the like to the flange provided on the outer cylinder 2, or by detachably fastening with a bolt or the like on the flange provided on the inner cylinder 3. The evaporation chamber 9 and the condensation chamber 10 can be formed.

  When the structure of fastening with a plurality of stay bolts 6 is adopted as in the former case, it is necessary to provide the outer cylinder 2 or the inner cylinder 3 with a flange for fastening the cover plates 4 and 5. As shown in the exploded view of FIG. 5, both the outer cylindrical body 2 and the inner cylindrical body 3 can be formed into a simple cylindrical shape in which the pipe is appropriately cut into lengths. Easy to manufacture.

  In any of the above-described fastening structures, all the parts constituting the double container 1, that is, the outer cylindrical body 2, the inner cylindrical body 3, are released by releasing the fastening of the lid plates 4 and 5. Each of the cover plates 4 and 5 can be disassembled into pieces.

  Further, the gaskets 7 and 8 are not limited to the configuration in which the gaskets 7 and 8 are fitted into the annular grooves 11 and 12 provided in the cover plates 4 and 5, as shown in FIG. Thus, it is possible to configure the gaskets 7 'and 8' so as to cover the outer cylinder 2 and the inner cylinder 3, and by adopting such a configuration, the double container 1 It is easy to mount the gasket when assembling. Also in the case of FIG. 4, the gaskets 7 ′ and 8 ′ can be configured to fit into the annular grooves 11 and 12 provided in the cover plates 4 and 5.

  When the double container 1 is assembled, a part of the outer cylindrical body 2 and the inner cylindrical body 3 are fitted into the annular grooves 11 and 12 and the positioning between them is performed accurately and reliably. It is configured as follows.

  One of the lid plates 4 and 5, which is located on the upper side, is provided with at least one vapor outlet 13 from the evaporation chamber 9 and two evaporating liquid inlets 14 to the evaporation chamber 9. In addition, at least one steam inlet 15 to the condensation chamber 10, two cooling fluid inlets 16 to the condensation chamber 10, and at least one vacuum exhaust port 17 from the condensation chamber 10 are provided. .

  On the other hand, the other cover plate 5 located on the lower side of the cover plates 4 and 5 is provided with at least one evaporative liquid outlet 18 from the evaporation chamber 9 and also from the condensation chamber 10. Two cooling fluid outlets 19 are provided.

  Then, evaporating liquid such as water accumulated at the bottom of the evaporating chamber 9 is pumped out by the circulation pump 20 from the evaporating liquid outlet 18 and indirectly heat exchange on the load side 22 such as a cooling place through the circulation line 21. After being supplied to the evaporator 23 as a cooling source, it is supplied from the indirect heat exchanger 23 to the evaporative liquid inlet 14 via the circulation line 24 and into the evaporation chamber 9 from the nozzle 14a at the upper part thereof. It is configured to circulate such that it returns to erupt.

  On the other hand, a cooling fluid such as water accumulated at the bottom of the condensing chamber 10 is pumped out by the circulation pump 25 from the cooling fluid outlet 19 and supplied to the indirect heat exchanger 27 on the heat radiating side 26 to radiate heat to the atmosphere. Cool with etc.

  Next, the cooling fluid cooled by the indirect heat exchanger 27 is supplied to the cooling fluid inlet 16 through the circulation line 28 and is ejected into the condensing chamber 10 from the nozzle 16a at the upper portion thereof. It is configured to perform a circulation of returning.

  Further, a steam outlet 13 from the evaporation chamber 9 and a steam inlet 15 to the condensing chamber 10 are connected by a steam duct 29, and steam generated in the evaporation chamber 9 is placed in the middle of the steam duct 29. A vapor compressor 30 is provided which is compressed and fed into the condensation chamber 10.

  As the vapor compressor 30, a centrifugal type such as a blower compressor can be used, and a positive displacement type can be used. As the positive displacement type, a root type compressor, a variable wing type compression can be used. A rotary compressor such as a machine or a screw compressor can be used. The steam duct 29 may be provided with a plurality of such steam compressors as illustrated in series or in parallel.

  In addition, a vacuum generator such as a vacuum pump 31 is connected to the vacuum exhaust port 17 from the condensation chamber 10 to maintain the inside of the evaporation chamber 9 and the condensation chamber 10 at a reduced pressure lower than the atmospheric pressure. In the evaporating chamber 9, the evaporating liquid is boiled and evaporated.

  In this configuration, the evaporating liquid whose temperature has been lowered by cooling by boiling evaporation in the evaporating chamber 9 is sent to the indirect heat exchanger 23 on the load side 22 such as a cooling location, where indirect cooling is performed. After the temperature rises by being used as a source, it returns to the inside of the evaporation chamber 9 and is cooled again by boiling evaporation here.

  The steam generated by boiling evaporation in the evaporation chamber 9 is compressed by the steam compressor 30 and then reaches the condensation chamber 10 where it circulates between the indirect heat exchanger 27 on the heat radiation side 26. In order to promote the condensation of the vapor in the condensation chamber 10, it is effective to provide a packed bed by Raschig ring or the like in the condensation chamber 10.

  By the way, in the above prior art, assuming that the diameter of the container constituting the evaporation chamber and the diameter of the container constituting the condensation chamber are each 500 mm, in the present invention, the inner cylinder 3 and the outer cylinder 2 The cross-sectional area in the gap between them may be substantially approximated to the cross-sectional area having a diameter of 500 mm.

  Therefore, in the present invention, when the diameter d of the inner cylinder 3 is set to 500 mm under the condition that the height dimensions of the outer cylinder 2 and the inner cylinder 3 are the same as those of the prior art, By setting the diameter D of the outer cylinder 2 to a minimum value of 720 mm, a cross-sectional area substantially approximating the cross-sectional area of the diameter 500 mm is formed in the gap between the inner cylinder 3 and the outer cylinder 2. It can be secured.

  As a result, the space required for installation can be greatly reduced and the weight can be reduced compared to the case where two independent containers having a diameter of 500 mm are arranged side by side as in the prior art.

  Further, in the above embodiment, for example, when the indirect heat exchanger 27 on the heat radiation side 26 is configured to forcibly vent the atmospheric air in a state where water is sprayed on the indirect heat exchanger 27, the atmospheric temperature is about 35 ° C. Even if it exists, the cooling fluid supplied to the said condensation chamber 10 can be cooled to about 30 degreeC.

  Therefore, when a roots type compressor is used as the vapor compressor 30, the compression ratio can be about 10 ° C. due to the temperature difference, so that the evaporative liquid supplied from the evaporation chamber 9 to the load side 22 can be reduced. The temperature can be cooled to about 20 ° C. in the evaporation chamber 9.

  In the present invention, the interior of the inner cylinder 3 is configured in the evaporation chamber 9 and the gap between the inner cylinder 3 and the outer cylinder 2 is configured in the condensation chamber 10 as in the illustrated embodiment. Not limited to this, the inside of the inner cylinder may be configured as a condensation chamber, and the gap between the inner cylinder and the outer cylinder may be configured as an evaporation chamber.

  However, when the inside of the inner cylinder 3 is configured in the evaporation chamber 9 and the gap between the inner cylinder 3 and the outer cylinder 2 is configured in the condensation chamber 10 as in the illustrated embodiment, Since the condensing chamber 10 having a temperature lower than the ambient temperature surrounds the evaporation chamber 9 having a temperature lower than the ambient temperature, the heat received by the evaporating chamber 9 having the temperature lower than the ambient temperature from the atmosphere. Effect (temperature rise) can be minimized.

  In addition, the inner cylinder 3 may be configured to be positioned at the center of the outer cylinder 2 in FIG. 2 as viewed from the axial direction thereof. It can comprise so that it may be located in the site | part eccentric from the center of the cylinder 2. FIG.

  Thus, by decentering the inner cylinder 3 with respect to the outer cylinder 2, the gap between the inner cylinder 3 and the outer cylinder 2 is widened on one side by the amount of the eccentricity, In this widened portion, a steam inlet 15, a cooling fluid inlet 16 and a cooling fluid inlet 16 are provided (when the condensing chamber 10 is a gap between the inner cylinder and the outer cylinder), or steam An outlet 13, an evaporating liquid inlet 14 and an evaporating liquid outlet 18 can be provided (when the evaporating chamber 9 is a gap between the inner cylinder and the outer cylinder).

As a result, the condensation of the vapor or the boiling evaporation of the evaporable liquid can be performed reliably in a large space with high volumetric efficiency, and the diameters of both the vapor inlet 15 and the vapor outlet 13 are increased. Steam flow resistance from the evaporation chamber 9 to the condensation chamber 10 can be reduced.
[Second Embodiment]
Next, FIGS. 6 to 9 show a second embodiment.

  In these drawings, reference numeral 101 denotes a double container constituting an evaporation chamber and a condensation chamber.

  The double container 101 includes an outer cylindrical body 102 configured in a horizontal cylindrical shape or a rectangular tube shape having a diameter D so as to open both left and right ends, and a lateral direction having a small diameter d so as to open both left and right ends. An inner cylinder 103 configured in a cylindrical shape or a rectangular tube shape, and the latter inner cylinder 103 forms an appropriate gap between the outer cylinder 102 and the outer cylinder 102. Has been inserted.

  The double container 101 further includes a pair of lid plates 104 for simultaneously closing openings at both ends of the laterally cylindrical outer cylinder 102 and openings at both ends of the laterally cylindrical inner cylinder 103, 105.

  The lid plates 104 and 105 are detachably attached to each other by a plurality of (four) stay bolts 106 disposed on the outer periphery of the outer cylinder body 102 and the inner cylinder body 103 with the outer cylinder body 102 and the inner cylinder body 103 sandwiched therebetween. By being fastened, the double container 101 is assembled.

  In this assembly, as shown in FIG. 8, sealing gaskets 107 and 108 are provided between both end surfaces of the outer cylinder 102 and the inner cylinder 103 and the inner surfaces of the cover plates 104 and 105, respectively. By interposing, an evaporation chamber 109 that seals a gap between the outer cylinder 102 and the inner cylinder 103 and a condensation chamber 110 that seals the inside of the inner cylinder 103 are formed.

  Note that the evaporation chamber 109 and the condensation chamber 110 are maintained at a pressure lower than the atmospheric pressure by a vacuum generation source such as a vacuum pump (not shown).

  In this case, in place of the structure in which the two cover plates 104 and 105 are detachably fastened to each other by the stay bolts 106, although not shown, the two cover plates 104 and 105 are not attached. The sealed evaporation is performed by detachably fastening with a bolt or the like to the flange provided on the cylinder 102 or by detachably fastening with a bolt or the like on the flange provided on the inner cylinder 103. It can be configured to be formed in the chamber 109 and the condensation chamber 110.

  When the structure of fastening with a plurality of stay bolts 106 is employed as in the former case, it is necessary to provide the outer cylinder 102 or the inner cylinder 103 with a flange for fastening the cover plates 104 and 105. As shown in the exploded view of FIG. 9, the outer cylindrical body 102 and the inner cylindrical body 103 can be formed into a simple cylindrical shape in which a pipe is appropriately cut into lengths. Easy.

  In addition, in any of the above-described fastening structures, all the parts constituting the double container 101, that is, the outer cylinder 102, the inner cylinder, are released by releasing the fastening of the cover plates 104 and 105. Each of the body 103 and the lid plates 104 and 105 can be disassembled into pieces.

  Further, as shown in FIG. 8, the gaskets 107 and 108 are not limited to a configuration in which the gaskets 107 and 108 are fitted into the annular grooves 111 and 112 provided in the cover plates 104 and 105, but the outer cylinder 102 and the inner cylinder. It is possible to adopt a configuration in which both ends of the body 103 are covered and mounted in the same manner as in FIG. 4. By adopting such a configuration, the gasket of the double container 101 can be assembled during assembly. Easy to install.

  The outer cylinder 102, the inner cylinder 103, and the two cover plates 104 and 105 constituting the double container 101 are made of a hard synthetic resin in order to reduce the weight (however, the outer cylinder As will be described below, the body 102 is preferably made of metal since each vapor compressor and its power source are mounted on the upper surface thereof). A part of the outer cylindrical body 102 and the inner cylindrical body 103 is fitted in the grooves 111 and 112 so that the positioning between them is performed accurately and reliably.

  A plurality (two) of mounting seats 132 each having a steam outlet 113 from the evaporation chamber 109 and one motor mounting seat 133 are provided on the upper surface of the outer cylinder 102 of the double container 101. Each of the mounting seats 132 provided with the steam outlet 113 has a roots-type steam compressor 130, and a suction port in the steam compressor 130 communicates with the inside of the evaporation chamber 109 via the steam outlet 113. On the other hand, a power source 134 such as an electric motor is attached to the motor mounting seat 133, and power transmission belts 135, 136 are provided between the power source 134 and the respective steam compressors 130. The steam compressors 130 are configured to be rotationally driven by power transmission from the one power source 134.

  One of the lid plates 104, 105 is provided with a steam inlet 115 to the upper part of the condensing chamber 110 and a cooling fluid outlet 119 from the bottom of the condensing chamber 110. Further, the one cover plate 104 is provided with a plurality of cooling fluid inlets 116 configured in a pipe shape so that the upper part in the condensation chamber 110 extends in the axial direction.

  A steam duct 129 from a discharge port in each steam compressor 130 is connected to the steam inlet 115.

  Cooling fluid by evaporating liquid such as water accumulated at the bottom of the condensing chamber 110 is pumped out by the circulation pump 125 from the cooling fluid outlet 119 and supplied to the heat exchanger 27 on the heat radiation side 126. After being cooled by heat radiation by indirect or direct contact with the atmosphere in the air, the heat exchanger 127 is sent to the cooling fluid inlets 116 via the circulation pipe 128 and into the condensing chamber 110. Circulation is performed to return so as to be ejected from a plurality of nozzle holes at various locations in the axial direction.

  The other cover plate 105 of the cover plates 104 and 105 has a plurality of (two) refrigeration evaporating liquid inlets configured in a pipe shape so that the upper part in the evaporation chamber 109 extends in the axial direction. In addition to the pipe 114, an evaporating liquid outlet 118 for cooling heat from the bottom of the evaporation chamber 109 is provided. Although not shown, the other cover plate 105 is provided with a vacuum extraction port from the condensation chamber 110 to the vacuum generation source.

  The evaporating liquid for cooling by evaporating liquid such as water accumulated at the bottom of the evaporating chamber 109 is pumped out by the circulation pump 120 from the evaporating liquid outlet 118 and is supplied to the cooling location etc. via the circulation line 121. It is supplied as a cooling source to the sealed indirect heat exchanger 123 on the load side 122, sent from the heat exchanger 123 to each of the evaporating liquid inlets 114 through the circulation pipe 124, In addition, circulation is performed such that the nozzles return so as to be ejected from a plurality of nozzle holes at various locations in the axial direction.

  The steam inlet 115, the cooling fluid outlet 118, and each cooling fluid inlet 116 for the condensation chamber 110 are provided in the other lid plate 105 instead of being provided in one lid plate 104 as shown in the figure. Or it can be configured to be provided on both the lid plates 104 and 105.

  Further, each of the cold evaporating liquid inlet 114 and the cold evaporating liquid outlet 118 for the evaporating chamber 109 is provided on one lid plate 104 instead of being provided on the other lid plate 105 as shown in the figure. Alternatively, it can be configured to be provided on both the cover plates 104 and 105, or can be configured to be provided on the outer cylinder 102.

  Furthermore, as the steam compressor 130, a centrifugal type such as a blower compressor can be used, and a positive displacement type can be used. A rotary compressor such as a wing compressor or a screw compressor can be used.

  In addition, the number of the steam compressors 130 is not limited to two as shown in the figure, but a plurality of the three or more steam compressors 130 are driven by power transmission from one power source 134. Can be configured.

  In this configuration, the cold evaporating liquid whose temperature has been lowered by cooling by boiling evaporation in the evaporation chamber 109 is sent to the indirect heat exchanger 123 on the load side 122 such as a cooling point, where After the temperature rises by being used as a cool heat source, it is returned to the evaporation chamber 109 and cooled again by boiling evaporation here.

  Steam generated by boiling evaporation in the evaporation chamber 109 is compressed by each steam compressor 130 and then reaches the condensation chamber 110 where it circulates between the heat exchanger 127 on the heat radiation side 126. In order to promote the condensation of the vapor in the condensation chamber 110, it is effective to provide a packed bed by Raschig ring or the like in the condensation chamber 110.

  In the present invention, as in the illustrated embodiment, the inside of the inner cylinder 103 is configured in the condensing chamber 110, and the gap between the inner cylinder 103 and the outer cylinder 102 is configured in the evaporation chamber 109. Not limited to this, the interior of the inner cylinder 103 may be configured in the evaporation chamber 109, and the gap between the inner cylinder 103 and the outer cylinder 102 may be configured in the condensation chamber 110.

  Thus, when the inside of the inner cylinder 103 is configured in the evaporation chamber 109 and the gap between the inner cylinder 103 and the outer cylinder 102 is configured in the condensation chamber 110, the evaporation at the lowest temperature than the atmospheric temperature is performed. By surrounding the chamber 109 with a condensing chamber 110 having a temperature lower than the atmospheric temperature, the evaporation chamber 109 having the lowest temperature is less affected by the atmosphere (temperature increase). it can.

  In contrast, as in the illustrated embodiment, the inside of the inner cylinder 103 is the condensation chamber 110, and the gap between the inner cylinder 103 and the outer cylinder 102 is the evaporation chamber 109. Can be configured as described below.

  First, a steam outlet 113 is provided on the upper surface of the outer cylindrical body 102 so that a steam duct from the steam outlet 113 to the steam compressor 130 is shortened, or the upper surface of the outer cylindrical body 102 is arranged. The vapor compressor 16 can be directly attached to the mounting seat 14 provided in the mounting seat 14 so that the discharge port communicates with the evaporation chamber 109 in the outer cylindrical body 102.

  Secondly, as shown in the drawing, the inner cylinder 103 in the outer cylinder 102 is decentered downward with respect to the outer cylinder 2 when viewed in the axial direction thereof, so that the inside of the evaporation chamber 109 is Of these, the upper space can be widened to improve the separation of vapor and liquid here.

It is a vertical front view which shows 1st Embodiment. FIG. 2 is a sectional view taken along the line II-II in FIG. 1. It is an enlarged view in the seal | sticker part of FIG. It is a figure which shows another example in the said seal part. It is a disassembled perspective view in 1st Embodiment. It is a vertical front view which shows 2nd Embodiment. FIG. 7 is a sectional view taken along the line VII-VII in FIG. 6. It is an enlarged view in the seal | sticker part of FIG. It is a disassembled perspective view in 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,101 Double container 2,102 Outer cylinder 3,103 Inner cylinder 4,104 Cover plate 5,105 Cover plate 6,106 Stay bolt 7,8,7 ', 8', 107,108 Gasket 9,109 Evaporating chamber 10, 110 Condensing chamber 13, 113 Vapor outlet 14, 114 Evaporating liquid inlet 15, 115 Vapor inlet 17, 117 Annular groove 16, 116 Cooling fluid inlet 18, 118 Evaporating liquid outlet 19, 119 Cooling fluid outlet 20,120 Circulating pump for evaporating liquid 22,122 Load side 25,125 Circulating pump for cooling fluid 26,126 Radiating side 29,129 Steam duct 30,130 Steam compressor 31 Vacuum pump

Claims (10)

An evaporating chamber for evaporating and evaporating the evaporating liquid at a pressure lower than atmospheric pressure, and a circulating means for circulating the evaporating liquid in the evaporating chamber to the load side as a cooling source for indirect cooling and then returning to the evaporating chamber again And an evaporative cooling device comprising a vapor compressor that compresses the vapor generated in the evaporation chamber, and a condensation chamber that condenses the vapor compressed by the vapor compressor,
Of the double container composed of the outer container and the inner container disposed therein, the inner container is disposed between the outer container and the inner container in either the evaporation chamber or the condensation chamber. An evaporative liquid evaporative cooling device, wherein a gap is formed in either one of the evaporating chamber and the condensing chamber.   2. The evaporation liquid according to claim 1, wherein the inside of the double container is formed in an evaporation chamber, and a gap between the outer container and the inner container is formed in a condensation chamber. Cooling device.   The outer container is an outer cylinder configured in a cylindrical shape with both ends open, and the inner container is an inner cylinder configured in a cylinder with both ends open, the openings at both ends of the outer cylinder, The openings at both ends of the inner cylinder are simultaneously closed by cover plates disposed at both ends of the outer cylinder and the inner cylinder. Evaporative cooling device.   4. The evaporative liquid evaporative cooling device according to claim 3, wherein the outer cylindrical body, the inner cylindrical body, and the two cover plates are configured to be disassembled from each other.   The outer cylinder body and the inner cylinder body are arranged vertically, and one of the lid plates at both ends of the outer cylinder body and the inner cylinder body is connected to the evaporating liquid inlet and the evaporation chamber from the evaporation chamber. A vapor outlet, a vapor inlet to the condensing chamber and a cooling fluid inlet, while the other lid plate located on the lower side has an evaporative liquid outlet from the evaporating chamber and the condensing 5. The evaporative liquid evaporative cooling device according to claim 3, wherein a cooling fluid outlet from the chamber is provided.   6. The evaporative cooling device for evaporable liquid according to claim 5, wherein the inner cylinder is located at a portion eccentric from the outer cylinder when viewed from the axial direction.   The outer cylinder and the inner cylinder are disposed sideways, the vapor compressor is disposed on the upper surface of the outer cylinder of the double container, and either one of the two lid plates or 5. The evaporative liquid evaporative cooling device according to claim 3 or 4, wherein both are provided with a vapor and fluid inlet / outlet port for the evaporating chamber and the condensing chamber.   A gap between the outer cylindrical body and the inner cylindrical body is formed in the evaporation chamber, an inner portion of the inner cylindrical body is formed in the condensation chamber, and a steam to the steam compressor is formed on the upper surface of the outer cylindrical body. The evaporative liquid evaporative cooling device according to claim 7, wherein an outlet is provided.   The evaporative cooling of evaporable liquid according to claim 7, wherein the inner cylinder is located at a portion eccentrically downward with respect to the outer cylinder when viewed from the axial direction thereof. apparatus.   A plurality of steam compressors are mounted on the upper surface of the outer cylinder side by side in the axial direction of the outer cylinder, and each of the steam compressors is configured to be driven by power transmission from one power source. The evaporative cooling device for evaporable liquid according to claim 7, wherein the evaporative cooling device is evaporative.

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