JP2010025430A - Evaporator and cooling unit equipped with evaporator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive evaporator preventing support bodies from being detached from evaporation sheets and damaged, and a cooling unit equipped with the evaporator. <P>SOLUTION: The evaporator 15 has the plate-shaped support bodies 17 and the evaporation sheets 16, and the plurality of evaporation sheets 16 are supported and fixed to the support bodies 17 by inserting notches 16a provided on the evaporation sheets 16 to recesses 17a provided on the support bodies 17. Since the support bodies 17 are arranged on bottom edges of the evaporation sheets 16, damage caused by moisture absorption and water absorption by the evaporator 15 is prevented. Thus, this configuration can secure stable evaporation performance and reduce the number of components and cost. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention provides a cooling unit such as a refrigerated showcase, a beverage vending machine, or a grain storage device equipped with a refrigeration cycle, and is installed in a machine room or the like to evaporate drain water generated from the refrigeration cycle. The present invention relates to a cooling unit including an apparatus.

  In a cooling system provided in a conventional freezer / refrigeration showcase, a configuration is known in which an evaporator is arranged in an evaporating dish for storing drain water generated from an evaporator (see, for example, Patent Document 1).

  In addition, there is an evaporator in which an evaporator provided with a support for fixing each evaporator sheet is installed on the bottom surface of the evaporator pan, and this evaporator is configured to be removable (see, for example, Patent Document 2).

  FIG. 5 is a perspective view of an evaporator provided in the cooling unit described in Patent Document 1, and FIG. 6 is a partial perspective view of the evaporator described in Patent Document 1.

  In FIG. 5, the evaporation apparatus 30 includes a plurality of evaporation sheets 31 that are arranged in parallel at regular intervals and that have cut grooves (not shown) on the side surfaces, and cut grooves (not shown). A plate-like support body 32 that fits into the cut groove of the sheet 31 and supports the plurality of evaporation sheets 31 is configured.

  The support body 32 has a comb-like shape having a plurality of cut grooves positioned at regular intervals. By fitting the cut grooves into the cut grooves on the side of the vaporized sheet 31, the plurality of vaporized sheets 31 are spaced at regular intervals. The evaporation device 30 is formed so as to be supported in parallel.

  In FIG. 6, the evaporator 30 is disposed in an evaporating dish 33 that accumulates drain water generated from an evaporator (not shown). A holding body 34 having a U-shaped cross section is planted at the bottom of the evaporating dish 33, and the lower end portion of the evaporating sheet 31 located on the outermost side is fitted into the holding body 34, so that the evaporation device 30 is installed. It is fixed to the evaporating dish 33.

  The evaporation device 30 configured as described above is formed by a comb-like support body 32 fitted to the side surface of the evaporation sheet 31, and the lower end portion of the evaporation sheet 31 positioned outside is a sandwiching body of the evaporation dish 33. 34 and is fixed.

  FIG. 7 is a partial plan view of the evaporation apparatus described in Patent Document 2. As shown in FIG.

  In FIG. 7, the evaporation apparatus 40 is configured such that each evaporation sheet 41 is supported by a support body 43 installed on the bottom surface of the evaporation dish 42 and arranged in parallel at regular intervals. Further, the evaporating dish 42 has a box shape and is configured such that the evaporating apparatus 40 is removable by covering the top plate 44.

In the evaporation apparatus 40 configured as described above, each evaporation sheet 41 is supported and fixed by a support body 43 installed on the bottom surface of the evaporation dish 42.
JP 2002-81846 A Japanese Patent Laid-Open No. 2003-240418

  However, the conventional configuration shown in Patent Document 1 is a configuration in which the lower end portion of the evaporating sheet 31 located outside is fitted and fixed to the holding member 34 of the evaporating dish 33. Since the thickness is about 0.5 mm to about 2.0 mm, and the thickness is thin, if the drain water accumulated in the evaporating dish 33 is sucked up by capillary action, the evaporating sheet 31 becomes weak and buckles. .

  As a result, the evaporating sheet 31 is detached from the support body 32, or the lower end portion 31b of the evaporating sheet 31 located on the outside is softened due to moisture absorption and water absorption, and is removed from the holding body 34. It becomes difficult to maintain. In particular, the higher the evaporation sheet 31 is, the easier it is to deform and buckle.

  Further, when the wind of the condenser fan (not shown) hits the evaporating sheet 31 that has become weaker, the fitting becomes weak and the support 32 is detached from the evaporating sheet 31, and the evaporating device 30 is easily damaged. It was a thing. For this reason, the evaporation performance could not be ensured, and the drain water overflowed from the evaporating dish 33.

  Further, in the conventional configuration shown in Patent Document 2, in order to install the support body 43 on the bottom surface of the evaporating dish 42, for example, when the material of the evaporating dish 42 is aluminum, it is necessary to fix the support body 43 by TIG welding. And the cost of parts increases due to the time required.

  Moreover, even if the evaporating dish 42 is made of plastic and the evaporating dish 42 and the support 43 are integrated, a molding die for plastic molding becomes very expensive and the parts cost is increased. Furthermore, the evaporation apparatus 40 is configured to be removed for maintenance, and the evaporation dish 42 has a box shape and a top plate 44 is provided, which increases the number of parts and increases the part cost. Had problems.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and provides a low-cost evaporator and a cooling unit including the same, which prevents the support from being detached from the evaporation sheet, can stably secure the evaporation performance. It is intended to do.

  In order to solve the above-described conventional problems, an evaporation apparatus according to the present invention attaches a plurality of evaporation sheets to a support having a notch groove by fitting a notch provided in the evaporation sheet, and attaches the evaporation sheet. The supported support is placed in an evaporating dish.

  Therefore, the bottom of the evaporating sheet that is most likely to be softened by water absorption is a fitting state of the notch groove provided in the support and the notch provided in the evaporating sheet. The deformation of the external appearance can be suppressed, and stable evaporation performance can be ensured. Further, since the number of parts is small, the cost can be suppressed.

  Furthermore, the cooling unit of the invention is one in which the evaporator is disposed on the leeward side of the condenser fan.

  As a result, even if the fan air volume increases, it is possible to prevent the support from being detached from the evaporating sheet and the evaporator to be damaged or deformed, increasing the air volume of the condenser fan, the cooling performance of the cooling unit, and It is possible to improve the evaporation performance in the evaporator.

  In the evaporation apparatus of the present invention, the support is detached from the evaporation sheet, so that the evaporation apparatus can be prevented from being damaged and deformed, and stable evaporation performance of the evaporation apparatus can be ensured. Moreover, an inexpensive evaporator can be obtained by minimizing the number of parts.

  Furthermore, since the cooling unit of the present invention attaches the evaporative sheet to the support by a firm fitting, the evaporative sheet may be detached from the support and the evaporator may be damaged even if the fan air volume increases. Absent. Therefore, the air volume of the condenser fan can be increased in order to improve the condensation performance, and the cooling performance of the cooling unit and the evaporation performance of the evaporator can be improved.

  The invention according to claim 1 is a plate-like support having a plurality of evaporating sheets arranged at a predetermined interval and having a cut at least at the bottom, and a plurality of notch grooves provided corresponding to the interval between the evaporating sheets. An evaporating apparatus having a body, wherein the evaporating sheet is arranged on the support by fitting the notch and the notch groove, and the supporting body having the evaporating sheet is placed in an evaporating dish. is there.

  By setting it as this structure, the combined structure of an evaporation sheet and a support body can be made into a firm structure. As a result, the support is not detached from the evaporation sheet and the evaporation apparatus is not damaged, and stable evaporation performance can be ensured.

  According to a second aspect of the present invention, in the evaporation apparatus according to the first aspect, a plurality of the supports are arranged on the bottom side of the evaporation sheet.

  Accordingly, the support arrangement state of the evaporation sheet can be stabilized, and accordingly, the arrangement and evaporation performance of the evaporation device can be further stabilized.

  According to a third aspect of the present invention, in the evaporation apparatus according to the first or second aspect, the support is provided on an upper side opposite to the bottom side of the evaporation sheet.

  As a result, the evaporative sheet can be more stably supported by the support, and as a result, the evaporating apparatus can be prevented from being broken and deformed by suppressing the detachment of the evaporative sheet from the support, thereby being more stable. Evaporation performance can be ensured.

  The invention described in claim 4 includes a compressor, a decompression device, a condenser, a refrigeration cycle in which an evaporator is connected in an annular shape, a condenser fan that promotes heat exchange between ambient air and the condenser, A cooling unit comprising: an evaporator fan that promotes heat exchange between air and the evaporator; and an evaporating dish that is disposed on the leeward side of the condenser and stores the condensed water of the evaporator. It is the cooling unit which has arrange | positioned the evaporation apparatus as described in any one of Claim 3 on the said evaporating dish.

  Such a cooling unit can stably evaporate dew condensation water and defrost water from the evaporator, and even if the air volume of the condenser fan is increased in order to improve the condensation performance, It is a configuration that can prevent breakage, and as a result, it is possible to improve the performance of the cooling unit and the evaporation performance of the evaporation device, and to minimize the number of parts and make the evaporation device inexpensive. .

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

(Embodiment 1)
FIG. 1 is a perspective view of a cool box equipped with a cooling unit according to Embodiment 1 of the present invention. FIG. 2 is a plan view showing the internal configuration of the cooling unit according to the first embodiment. FIG. 3 is a perspective view of the evaporator mounted on the cooling unit according to the first embodiment. 4 is an exploded perspective view of a portion A in FIG.

  The cool box 1 for storing grains and the like is provided with a door 2 that can be opened and closed on the front surface, and the inside is maintained in a predetermined temperature range by a cooling unit 3 disposed on the ceiling.

  The main body of the cooling unit 3 is composed of cases 3a and 3b that can be divided into upper and lower parts, and FIG. 2 shows a state in which the upper case 3a is removed. As shown in FIG. 2, the inside of the main body is divided into a cooling chamber 4 and a machine chamber 5 on the left and right, and openings 6 and 7 communicating with the inside of the cool box 1 are provided on the bottom surface of the cooling chamber 4.

  Furthermore, a refrigeration cycle in which the compressor 8, the decompression device 9, the condenser 10, and the evaporator 11 are connected in a ring shape is provided inside the main body of the cooling unit 3, and the ambient air and the condenser 10 A condenser fan 12 that promotes heat exchange and an evaporator fan 13 that promotes heat exchange between the ambient air and the evaporator 11 are provided.

  A compressor 8, a decompression device 9, a condenser 10, and a condenser fan 12 are disposed in the machine room 5, and an evaporator 11 and an evaporator fan 13 are disposed in the cooling chamber 4.

  Therefore, in the machine room 5, when the condenser fan 12 is operated, the heat exchange action of the condenser 10 and the cooling of the compressor 8 are performed by the airflow flowing from the condenser 10 to the compressor 8 as indicated by the arrow X. In the cooling chamber 4, when the evaporator fan 13 is operated, the air cooled by the evaporator 11 circulates inside the cool box 1 by the airflow flowing from the opening 6 to the opening 7 as indicated by the arrow Y. The temperature inside the cool box 1 is adjusted.

  The machine room 5 is provided with an evaporating dish 14 that condenses in the evaporator 11 and receives drain water appropriately introduced by means, and an evaporating device 15 is disposed in the evaporating dish 14. The evaporating dish 14 is disposed at a location where the air flow from the condenser fan 12 passes, and the evaporating device 15 is provided at a position where the evaporating device 15 interferes with the air flow and receives the radiant heat of the compressor 8.

  Further, the evaporator 15 is arranged in parallel at regular intervals as shown in FIG. 3, and a plurality of evaporator sheets 16 having cuts 16a in the lower part as shown in FIG. And a support body 17 having a recess (corresponding to a notch groove of the present invention) 17a into which the notch 16a of the evaporation sheet 16 is fitted.

  The notches 16a of the evaporation sheet 16 are provided at both ends of the bottom and the upper side opposite to the bottom, and the support 17 has a total of four pairs arranged on the bottom and the upper side corresponding thereto. As shown, the notch 16a and the recess 17a are fitted.

  Therefore, each evaporating sheet 16 forms a fitting structure with a plurality of supports 17 and is not easily disassembled.

  In the first embodiment, the four supports 17 are all the same size and configuration, and have versatility.

  The evaporating sheet 16 is mainly made of a non-woven fabric having a thickness of about 0.5 mm to 2.0 mm, which is mainly made of polyester. Moreover, since the evaporating sheet 16 sucks up the drain water of the evaporating dish 14 by a capillary phenomenon, it is preferable to employ a sheet having a large width dimension and thickness dimension in order to improve the evaporating performance.

  The support 17 is made of an inexpensive material such as plastic such as polypropylene, and is formed in a comb shape having recesses 17a at regular intervals.

  The operation and action of the evaporator 15 configured as described above and the cooling unit 3 including the evaporator 15 will be described below.

  In the cooling unit 3, the compressor 8, the condenser fan 12, and the evaporator fan 13 are respectively operated by turning on an operation switch (not shown), and the refrigerant circulates in the refrigeration cycle as is well known. The air cooled by 11 circulates in the cool box 1 as indicated by the arrow Y in FIG. 2, and the air heated by the condenser 10 is discharged to the outside of the cooling unit 3 as indicated by the arrow X in FIG. .

  The drain water condensed on the evaporator 11 with the operation or the drain water discharged by the melting operation (defrosting operation) of the frost attached to the evaporator 11 with the operation for a long time is 14 is stored.

  The drain water of the evaporation device 15 installed in the evaporation dish 14 is evaporated while sucking up the drain water using a capillary phenomenon.

  The evaporation of the evaporator 15 is promoted by the relatively high temperature wind that has passed through the condenser fan 12. For this reason, it is desirable that the condenser fan 12 has a large air volume.

  As described above, in the first embodiment, the drainage water accumulated in the evaporating dish 14 is evaporated by attaching the support 17 of the evaporating apparatus 15 to the bottom of the evaporating sheet 16 and arranging it on the bottom surface of the evaporating dish 14. Can be made.

  Moreover, since the evaporating sheet 16 and the support 17 are connected by fitting a notch 16 a provided in the evaporating sheet 16 and a recess 17 a provided in the supporting body 17, the lowermost part of the evaporating sheet 16 is connected to the evaporating dish 14. It is easy to touch the bottom surface, and as a result, it is possible to suck up from a state in which the amount of drain water stored is relatively small, and the evaporation capacity can be increased.

  Furthermore, as described above, the coupling area associated with the fitting of the evaporation sheet 16 and the support 17 can be secured by fitting the notch 16a and the recess 17a provided in the evaporation sheet 16 and the support 17, respectively. The evaporative sheet 16 can be firmly supported against the softening of the sheet 16, and the evaporative sheet 16 is not easily folded. Accordingly, the support of the evaporating sheet 16 by the support 17 can be stably maintained, and the support 17 is detached from the evaporating sheet 16 due to the wind pressure of the condenser fan 12 or the vibration of the compressor 8, and the evaporator 15 is deformed. Alternatively, the evaporation performance cannot be maintained due to breakage, and the drain water can be prevented from overflowing from the evaporation dish 14.

  In the first embodiment, by arranging a plurality (two in the first embodiment) of the supports 17 of the evaporation device 15 on the bottom side of the evaporation sheet 16, a balance can be secured and the evaporation device 15 can be stably provided. Can be installed.

  Further, in the first embodiment, the evaporation device 15 can be configured to have a small number of parts in which the evaporation sheet 11 is supported by an inexpensive plastic material support 17, and the cost can be kept low. it can.

  Further, in the first embodiment, by arranging the same number of supports 17 of the evaporation device 15 on the bottom side and the upper side of the evaporation sheet 16, the balance is achieved and the installation state can be maintained more stably. It is possible to prevent the evaporation device 15 from being damaged and deformed when the support 17 is detached from the evaporation sheet 16, and to ensure the evaporation performance.

  Further, since the installation of the evaporation device 15 can be stabilized as described above, the air volume of the condenser fan 12 can be increased to improve the condensation performance, and the performance of the cooling unit 3 can be improved. Can be improved.

  In the first embodiment, the support members 17 are arranged in pairs on the bottom side and the top side of the evaporation sheet 16, but the number of the support members 17 used on the bottom side can be made larger than the top side. In addition, in order to make the upper side light, it is possible to adopt a configuration in which the minimum number is used for the upper side.

  Further, the thickness of the support 17 used for the upper side is made thinner than the thickness of the support 17 used for the bottom, and the weight of the upper side of the evaporation sheet 16 is reduced, thereby softening the evaporation sheet 16 due to moisture absorption. The deformation | transformation of the evaporation apparatus 15 which originates in it can be suppressed, and the evaporation performance of the evaporation apparatus 15 can be maintained over a long term.

  In addition, the cooling unit 3 is not limited to the cool box 1 intended for grains and the like, but the main body shape thereof is adapted to a vending machine or a refrigerated showcase so that it can be incorporated into those devices. It can be mounted and the same effect can be expected.

  The evaporation apparatus according to the present invention and the cooling unit including the evaporation apparatus are configured so that the evaporation sheet is not easily damaged by being detached from the support body, and therefore, the evaporation performance can be secured and the cost is low. Can be widely applied.

The perspective view of the cool box which mounted the cooling unit in Embodiment 1 of this invention. The top view which shows the internal structure of the cooling unit in Embodiment 1 The perspective view of the evaporation apparatus mounted in the cooling unit in Embodiment 1 The exploded perspective view of the A section in FIG. Perspective view of a conventional evaporator Partial perspective view of the evaporator in the conventional example The top view which notched a part of evaporator which shows a different conventional example

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Cooling unit 8 Compressor 9 Depressurizer 10 Condenser 11 Evaporator 12 Condenser fan 13 Evaporator fan 14 Evaporating dish 15 Evaporator 16 Evaporating sheet 16a Notch 17 Support 17a Recessed part (notch groove)

Claims (4)

  An evaporation apparatus comprising a plurality of evaporating sheets arranged at a predetermined interval and having a cut at least at the bottom, and a plate-like support body having a plurality of cutting grooves provided corresponding to the interval between the evaporating sheets. An evaporator in which the evaporating sheet is disposed on the support by fitting the notch and the notch groove, and the support provided with the evaporating sheet is placed in an evaporating dish.   The evaporation apparatus according to claim 1, wherein a plurality of the supports are arranged on a bottom side of the evaporation sheet.   The evaporation apparatus according to claim 1, wherein the support is provided on an upper side opposite to the bottom side of the evaporation sheet.   A refrigeration cycle in which a compressor, a decompression device, a condenser, and an evaporator are connected in a ring; a condenser fan that promotes heat exchange between the ambient air and the condenser; and heat exchange between the ambient air and the evaporator. A cooling unit comprising an evaporator fan to be promoted and an evaporating dish disposed on the leeward side of the condenser and storing condensed water of the evaporator, wherein the cooling unit comprises: A cooling unit in which the evaporating apparatus described above is disposed on the evaporating dish.