JP2007101150A - Evaporator and condensing unit equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an evaporator having evaporating sheets with high evaporating performance, and a condensing unit equipped with the evaporator. <P>SOLUTION: A first evaporator 5 comprising a plurality of evaporating sheets 6 arranged in parallel at fixed spaces to allow an air current 4 to flow between them with the lower ends submerged in drain water, is provided with a slit group 8 lifting a part of the evaporating sheet 6 in parallel with a sheet face. The concentration boundary layer thickness of moisture in the air is thereby reduced by the front edge effect of the slit group 8 to provide the evaporator capable of improving a material transmission rate. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a condensing unit installed in a lower machine room of a refrigerated and refrigerated showcase, and more particularly to a condensing unit including an evaporation device that evaporates defrosted water in a refrigerated and refrigerated showcase.

  In the conventional refrigeration / cooling showcase, the drain water is evaporated by the hot pipe from which the hot air from the condensing fan and the superheated refrigerant flow, and there is a problem that the configuration of the unit room is limited considering the arrangement of the hot pipe. is there. In order to solve this problem, there is known a condensing unit in which a hot pipe is omitted by providing an evaporation device having an evaporation area sufficient to evaporate all of the introduced drain water with hot air (for example, Patent Documents). 1).

  In such a condensing unit, FIG. 6 is a schematic configuration diagram of an evaporator provided in the conventional condensing unit described in Patent Document 1. In FIG.

  In FIG. 6, the evaporating sheet 1 has a flat plate shape, and the lower end of the evaporating sheet 1 is immersed in the drain water accumulated in the evaporating dish 3. The evaporator 2 has a structure in which a plurality of evaporation sheets 1 are arranged at regular intervals, and warm air 4 coming from a condenser fan (not shown) flows between them.

  The operation and action of the evaporation apparatus configured as described above will be described below.

The drain water generated in the evaporator (not shown) of the refrigeration / cooling showcase is introduced into the evaporator 2 and evaporated. The evaporation device 2 sucks up the drain water introduced into the evaporation dish 3 at the upper surface opening by the capillary action of the conventional evaporation sheet 2 and vaporizes and evaporates it into the warm air 4 coming from the condenser fan above the evaporation dish 3.
JP 2003-106747 A

  However, in the above-described conventional configuration, the evaporation sheet 1 has a flat plate shape. Therefore, the concentration boundary layer thickness of the moisture in the air on the evaporation sheet surface increases in accordance with the flow direction of the hot air 4, and the drain water is vaporized. Evaporation performance (mass transfer rate) decreases. In order to have an evaporation area sufficient to evaporate all the drain water introduced by evaporation, more evaporation sheets 1 are required, leading to an increase in the size of the evaporation device 2, and the condensing unit chamber for the refrigeration / cooling showcase. It had the subject that a structure was restrict | limited.

  The present invention solves the above-described conventional problems, and an object thereof is to provide an evaporation apparatus having an evaporation sheet with good evaporation performance and a condensing unit including the evaporation apparatus.

  In order to solve the above-described conventional problems, an evaporator according to the present invention is an evaporator including a plurality of evaporation sheets that are arranged in parallel at regular intervals, an airflow flows between them, and a lower end is submerged in drain water. The evaporative sheet is provided with a slit in which a part of the evaporating sheet is lifted parallel to the sheet surface.

  As a result, the thickness boundary layer thickness of the moisture in the air is reduced due to the leading edge effect of the slit, so that the mass transfer rate can be improved.

  The evaporation apparatus of the present invention can improve the performance of vaporizing and evaporating drain water from the evaporation sheet surface.

  Further, the condensing unit of the present invention has an effect of eliminating the limitation of the configuration of the condensing unit by the evaporation device because the evaporation device can be made compact by improving the vaporization evaporation performance of the evaporation sheet.

  The invention according to claim 1 is an evaporation apparatus comprising a plurality of evaporation sheets that are arranged in parallel at regular intervals, an airflow flows between them, and a lower end is submerged in drain water. By adopting a configuration with a slit lifted parallel to the surface, the boundary layer thickness of the moisture in the air is reduced by the leading edge effect of the slit, so that the mass transfer rate is improved and drain water is vaporized from the surface of the evaporation sheet Evaporation performance is improved.

  The invention according to claim 2 is an evaporation apparatus comprising a plurality of evaporation sheets that are arranged in parallel at regular intervals, an airflow flows between them, and a lower end is submerged in drain water, and the evaporation sheet has a corrugated plate shape. By adopting a structure, the concentration of water in the air is reduced, and the thickness of the boundary layer is reduced, so that the mass transfer rate is improved and the performance of vaporizing and evaporating drain water from the evaporation sheet surface is improved. The shape processing of the evaporating sheet is relatively easy with respect to the lifted slit.

  The invention according to claim 3 is a compressor, a condenser, a condensing fan, an evaporator having a slit in which a part of the evaporating sheet is lifted in parallel to the sheet surface, or the evaporating sheet has a corrugated plate shape. By providing the evaporator with a condensing unit, it becomes an evaporator with good vaporization and evaporation performance for the evaporation sheet having a flat plate shape, so that the evaporator can be made compact and the condensing unit. There is an effect that the restriction of the configuration by the evaporator is eliminated.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
1 is a perspective view of an evaporation apparatus according to Embodiment 1 of the present invention, FIG. 2 is a plan view of an evaporation sheet of the evaporation apparatus according to the embodiment, and FIG. 3 is a sectional view taken along line AA ′ of FIG. Is shown. FIG. 4 is a schematic configuration diagram of a condensing unit in the same embodiment.

  In the invention of this embodiment, parts having the same configurations and operations as those of the background art are denoted by the same reference numerals, detailed description thereof is omitted, and different parts are mainly described.

  In FIG. 1 to FIG. 3, the first evaporator 5 includes a plurality of slit-like evaporation sheets 6 arranged in parallel at regular intervals, and warm air coming from a condensing fan (not shown) between the plurality of slit-like evaporation sheets 6. 4 flows, and the lower ends of the plurality of evaporating sheets 6 with slits are immersed in drain water (not shown) introduced into the evaporating dish 3. The evaporating sheet 6 with slits is provided with a slit group 8 in which a part of the evaporating sheet is lifted in parallel to the sheet surface.

  About the 1st evaporator 5 comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  The drain water generated in the evaporator (not shown) of the refrigeration / cooling showcase is introduced into the first evaporator 5 and evaporated. The first evaporator 5 sucks up the drain water introduced into the evaporating dish 3 having an opening on the upper surface by the capillary action of the evaporating sheets 6 with slits, and vaporizes the warm air 4 coming from the condensing fan above the evaporating dish 3. Evaporate. Due to the leading edge effect of the slit group 8 of the evaporating sheet 6 with slits, the concentration boundary layer thickness of moisture in the air is reduced, so that the mass transfer rate is improved and the performance of vaporizing and evaporating drain water from the evaporating sheet surface is improved.

  In FIG. 4, the condensing unit CDU includes a compressor 9, a condenser 10, a condensing fan 11, and a first evaporator 5. The condensing unit CDU is incorporated in a cooling device such as a refrigeration cooling showcase. Is.

  About the condensing unit comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  The drain water generated in the evaporator of the refrigeration / cooling showcase is vaporized and evaporated by the first evaporator 5 by the hot air 4 coming from the condensing fan 11. Since the first evaporator 5 includes the slitted evaporation sheet 6 including the slit group 8, the vaporization and evaporation performance of drain water from the evaporation sheet surface can be improved as compared with the background art. As a result, the first evaporator 5 can be made compact, and there is an effect that the configuration of the condensing unit CDU by the first evaporator 5 is not limited.

  As described above, in the present embodiment, since the evaporating sheet 6 with the slit including the slit group 8 in which a part of the evaporating sheet is lifted parallel to the sheet surface is provided, the hot air 4 as in the background art is provided. Accordingly, it is possible to prevent the concentration boundary layer thickness of moisture in the air on the surface of the evaporating sheet from becoming thicker and to improve the performance of vaporizing and evaporating drain water from the evaporating sheet surface.

  Further, the condensing unit CDU includes the compressor 9, the condenser 10, the condensing fan 11, and the first evaporator 5. Therefore, the first evaporator 5 can be made compact, and the condensing unit There is an effect that the restriction of the configuration by the first evaporator 5 of the CDU is eliminated.

  In the present embodiment, the condensing unit CDU has been described as an example, but it goes without saying that a cooling unit in which an evaporator is added to the condensing unit CDU has the same function.

(Embodiment 2)
FIG. 5 is a schematic configuration diagram of an evaporation apparatus according to Embodiment 2 of the present invention.

  In the invention of this embodiment, parts having the same configurations and operations as those of the background art and Embodiment 1 are denoted by the same reference numerals, detailed description thereof is omitted, and different parts are mainly described.

  In FIG. 5, the second evaporator 12 has a plurality of corrugated evaporative sheets 13 arranged in parallel at regular intervals in parallel, and warm air coming from a condensing fan (not shown) between the plurality of corrugated evaporative sheets 13. 4 flows, and the lower ends of the plurality of corrugated evaporating sheets 13 are immersed in drain water (not shown) introduced into the evaporating dish 3.

  About the 2nd evaporator 12 comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  By making the corrugated evaporating sheet 13 of the second evaporator 12 into a corrugated plate shape, the concentration boundary layer thickness of the moisture in the air is reduced. Therefore, the mass transfer rate of moisture from the corrugated evaporation sheet 13 to the air flow 4 is improved, and the performance of vaporizing and evaporating drain water from the surface of the corrugated evaporation sheet 13 is improved. The shape processing of the evaporating sheet is relatively easy with respect to the sheet 6.

  Although only the evaporation apparatus has been described in the present embodiment, it is needless to say that even when applied to the condensing unit CDU and the cooling unit, the size can be reduced as in the first embodiment.

  As described above, the evaporation apparatus according to the present invention and the condensing unit equipped with the evaporation apparatus have an evaporation sheet with good evaporation performance. Therefore, various forms are required to improve the vaporization and evaporation of drain water. It can be widely applied to condensing units and cooling units.

The perspective view of the evaporation apparatus in Embodiment 1 of this invention The top view of the evaporation sheet of the evaporation device in the embodiment A-A 'line sectional view of FIG. Schematic configuration diagram of the condensing unit in the same embodiment Schematic block diagram of the evaporator in Embodiment 2 of this invention Schematic configuration diagram of a conventional evaporator

Explanation of symbols

DESCRIPTION OF SYMBOLS 5 1st evaporation apparatus 6 Evaporation sheet with slit 8 Slit group 9 Compressor 10 Condenser 11 Condensing fan 12 2nd evaporation apparatus 13 Corrugated evaporation sheet CDU Condensing unit

Claims (3)

  Evaporation apparatus comprising a plurality of evaporating sheets arranged in parallel at regular intervals, with airflow flowing between them and submerged in drain water, and having a slit that lifts a part of the evaporating sheet parallel to the sheet surface apparatus.   An evaporator having a corrugated plate, wherein the evaporator sheet is arranged in parallel at regular intervals, an airflow flows between them, and an evaporator comprising a plurality of evaporator sheets submerged in drain water.   A condensing unit comprising a compressor, a condenser, a condensing fan, and the evaporator according to claim 1.

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