JP2010032151A - Heat insulating case, and cooling unit provided with the same - Google Patents

Abstract

To provide a heat insulating case that can be easily removed even when the dividing surfaces of the heat insulating case are not on the same plane, and a cooling unit including the heat insulating case.
A heat insulation case (1) is made of a polystyrene molded product having a first case (2) of a polystyrene molded product having long protruding portions (5, 7) in a jetty shape, and recesses (6, 8) into which the protruding portions (5, 7) are fitted. A second case 3 is provided, and a protective sheet 9 is attached to the fitting surfaces of the convex portions 5 and 7 and the concave portions 6 and 8. Thus, the projections 5 and 7 and the recesses 6 and 8 can be fitted through the protective sheet 9 to ensure sealing performance, and the protection sheet 9 can damage the projections 5 and 7 and the recesses 6 and 8. It is possible to prevent and improve the reliability of the heat insulating case 1 made of sroll.
[Selection] Figure 1

Description

  The present invention relates to a cooling unit including a refrigeration cycle, and more particularly, to a cooling unit including a heat insulating case that is installed in, for example, a lower machine room of a refrigeration showcase and covers the refrigeration cycle components.

  In a cooling system provided in a conventional refrigerated showcase, the evaporator constituting the refrigeration cycle is arranged in a styrene molded heat insulating case with a drain pan installed in the lower part thereof.

  The heat insulation case has a configuration that can be divided into upper and lower parts, and a dividing surface is provided with a protruding ridge-like convex portion on one side and a groove-shaped concave portion on the other side, and the concave portion and the convex portion are fitted to each other. Therefore, the heat insulation case without a heat leak was comprised (for example, refer patent document 1).

  The configuration of such a cooling unit will be described with reference to FIGS. FIG. 7 is a perspective view showing a divided state of a heat insulating case provided in the cooling unit described in Patent Document 1, and FIG. 8 is a partial cross-sectional view of a jetty-like convex portion provided in the heat insulating case.

  In FIG. 7, the styrol-insulated heat insulation case is configured to be vertically divided in the plane direction by an upper heat insulation case 51a and a lower heat insulation case 52a. On the divided surface, a jetty-shaped convex portion 51A is provided on the lower surface side of the upper heat insulating case 51a, and a concave portion 52A in which the convex portion 51A is fitted is provided on the upper surface side of the lower heat insulating case 52a. ing.

  As shown in FIG. 8, the protrusion 51A has a cross-sectional shape in which the width L2 of the tip 51A2 is set larger than the width L1 of the base 51A1, and the tip 51A2 is formed in a bowl shape having a curved section. Has been. And the convex part 51A and the recessed part 52A are fittingly coupled on the same plane.

An evaporator (not shown) is sandwiched and installed in the heat insulating case configured as described above, and is insulated from the outside of the heat insulating case by a fitting structure in which the convex portion 51A and the concave portion 52A are firmly coupled. Has been.
JP 2001-241834 A

  However, in the above-described conventional configuration, when the coupling surface (divided surface) between the upper heat insulating case 51a and the lower heat insulating case 52a is on the same plane, a certain effect can be obtained, but the divided surface stands upright in the plane direction. In the case of the configuration formed across the surface direction (perpendicular to the plane or in the inclined direction), the width L2 of the tip 51A2 of the protrusion 51A is set large, so the upper heat insulating case 51a and the lower heat insulating When a force is applied so as to divide the case 52a in the plane direction, the tip portion 51A2 of the convex portion 51A is caught by the concave portion 52A in the release of the fitting in the vertical direction, and the material is a molded product of polystyrene foam. Furthermore, it was very brittle and easy to break and could not be removed easily. Further, when the number of divisions overlaps due to the above-described brittleness, the tip portion 51A2 of the convex portion 51A is broken, and in particular, there is a problem that it is necessary to newly replace the upper heat insulating case 51a.

  The present invention solves the above-described conventional problem, and when the upper heat insulating case and the lower heat insulating case are not on the same plane, that is, when the dividing surface is continuous over the plane direction and the elevation direction. It is another object of the present invention to provide a heat insulating case in which the upper heat insulating case and the lower heat insulating case can be easily removed during service work, and to provide a cooling unit including the heat insulating case.

  In order to solve the above-described conventional problems, the heat insulation case of the present invention has a jetty-like convex portion protruding in the dividing direction on one of the divided surfaces of the first and second cases, and the other divided surface. A groove-like recess is provided in which the protrusion fits, and a protective sheet with excellent wear resistance is used between the protrusion and the recess. It is set as the structure which is made to fit.

  As a result, even if the division in the heat insulating case is a configuration in which a division surface that is continuous in the plane direction and the elevation direction is divided as a boundary, it can be easily divided, and the protective sheet provides a sealing property when fitted. It can be secured.

  Moreover, the cooling unit of this invention arrange | positions the evaporator and the fan for evaporator which comprise a refrigerating cycle in the said heat insulation case.

  As a result, the maintenance workability is improved, and the breakage of the convex portion can be suppressed during the division of the first case and the second case, and the decrease in the reliability of the cooling unit can be suppressed. is there.

  The heat insulating case of the present invention can ensure heat insulating performance, and it becomes easy to divide a convex portion and a concave portion that extend long in a jetty shape along the dividing surface even when dividing, and the concave portion of the convex portion at the time of dividing the heat insulating case Damage due to catching on can be suppressed.

  Furthermore, the cooling unit of the present invention facilitates the division work of the heat insulation case, and it is difficult to cause the breakage of the protrusion extending in the shape of the jetty along the division surface. In addition, as described above, the fitting state of the first case and the second case can be maintained satisfactorily, the decrease in the cooling action by the evaporator can be suppressed, and the reliability of the cooling unit can be improved.

  The invention according to claim 1 is formed of a first case and a second case, which are formed of a styrene molding material, have a hollow interior and have a continuous divided surface, and are divided at the divided surface. Furthermore, a jetty-like convex part that protrudes with substantially the same width dimension in the dividing direction is provided on one of the dividing surfaces of the first and second cases, and the other of the first and second cases is divided. Provided on the surface is a groove-like concave portion into which the convex portion is fitted, and a first protective sheet that is in close contact with the mating surface is provided on the mating surface with at least one of the convex portion or the concave portion. Is.

  By adopting such a configuration, when dividing the heat insulating case, even if the dividing surface is a configuration in which the dividing surface is continuous in the plane direction and the elevation direction, it is possible to divide by a force acting in one direction (plane direction). As a result, the division work is facilitated, and the workability such as maintenance can be improved. Furthermore, since the convex portion extending in a jetty shape along the dividing surface is covered with the protective sheet, it is difficult to cause a problem of partially damaging the convex portion. Even when the division is performed a plurality of times, the life of the heat insulating case can be maintained because the risk of breakage of the convex portion is small. In addition, the protective sheet can ensure sealing performance even in the coupled state of the first case and the second case, and can suppress a decrease in heat insulation.

  The invention according to claim 2 is the same as that according to claim 1, wherein the mating surface of the mating member fitted with the convex portion or the concave portion provided with the first protective sheet is made of the same material as the first protective sheet. The second protective sheet is provided.

  By adopting such a configuration, the fitting surface of the convex portion and the concave portion is fitted through the protective sheet that is two-layered. Therefore, the fitting and airtightness can be secured even for the division over the range, and the reliability of the heat insulating case can be improved.

  The invention according to claim 3 is the invention according to claim 1 or 2, wherein the first and second protective sheets are attached to the fitting surface of the convex portion or the concave portion with an adhesive or an adhesive. It is.

  By setting it as this structure, even if the division | segmentation of the 1st and 2nd case over many times is accompanied, a protection sheet does not peel easily but the reliability of a heat insulation case can be maintained.

  According to a fourth aspect of the present invention, there is provided a compressor, a pressure reducing device, a condenser, a refrigeration cycle in which an evaporator is connected in an annular shape, a condenser fan for promoting heat exchange between the ambient air and the condenser, and ambient air. A cooling unit including an evaporator fan that promotes heat exchange between the evaporator and the evaporator, wherein the evaporator and the evaporator fan are arranged in a heat insulating case according to any one of claims 1 to 3. It is a cooling unit.

  By adopting such a configuration, it is easy to divide the first case and the second case during maintenance of the evaporator section, and workability such as maintenance can be improved. In addition, when the heat insulating case is divided, the convex portion and the concave portion have a fitting structure with a protective sheet interposed therebetween, so that the convex portion is not easily damaged by the protective sheet. As a result, it is possible to suppress the breakage of the projecting portion extending in a jetty shape, and it is possible to suppress a decrease in the reliability of the heat insulating case due to the breakage. Furthermore, since the division surface of the heat insulation case is configured to be continuous in the plane direction and the elevation direction, there is no design restriction to make the division surface of the heat insulation case the same plane, the configuration of the heat insulation case of the cooling unit, The restriction on the shape can be relaxed and the degree of design freedom can be improved.

  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 an exploded perspective view of a heat insulation case according to Embodiment 1 of the present invention. FIG. 2 is a partially exploded perspective view showing a fitting configuration of a plane division surface portion of the heat insulation case in the first embodiment. FIG. 3 is a partially exploded perspective view showing a fitting configuration of the vertical surface dividing surface portion of the heat insulating case in the first embodiment. FIG. 4 is a partial cross-sectional view showing the structure before fitting the convex portions in the first embodiment. FIG. 5 is a partial cross-sectional view showing the structure before fitting the recesses in the first embodiment.

  1 to 5, the heat insulation case 1 is a molded product of polystyrene foam, and has a split surface in which a plane split surface X and an upright split surface Y that is perpendicular to the plane split surface X are continuous. The first case 2 and the second case 3 can be divided by this dividing surface.

  The heat insulation case 1 is formed in a hollow shape, and has a suction port and a blow-out port (both not shown) on adjacent side surfaces, and a cooling unit in which an evaporator and a fan for an evaporator described later are unitized. 4 is arranged.

  On the plane division surface X of the first case 2, long and continuous convex portions 5 having a jetty shape are integrally provided by molding as shown in FIG. 2.

  Further, in the second case 3, a groove-like concave portion 6 into which the convex portion 5 is fitted is integrally provided on the plane dividing surface X facing the first case 2 as shown in FIG.

  Further, on the inclined vertical surface dividing surface Y of the first case 2, long and continuous convex portions 7 having a jetty shape are integrally provided by molding as shown in FIG. 3.

  Further, in the second case 3, a groove-like concave portion 8 into which the convex portion 7 is fitted is integrally provided on the inclined vertical surface dividing surface Y facing the first case 2 as shown in FIG. ing.

  The convex portions 5 and 7 are not necessarily connected continuously from the plane dividing plane X to the vertical plane dividing plane Y. For example, the convex portions 5 and 7 are difficult to mold when the shape is complicated and molding is difficult. It is good also as a structure which lose | eliminates the connection of the parts 5 and 7 and makes the plane division surface X of the 2nd case 3 which opposes, or the surface division | segmentation surface Y, and a mere surface contact.

  Similarly, it is not necessary for the recesses 6 and 8 to be connected continuously from the plane dividing plane X to the vertical plane dividing plane Y, and partially the plane dividing plane X or the vertical plane of the first case 2. It is good also as a structure which becomes the contact of the division surface Y and a mere surface.

  Furthermore, it is also possible to adopt a configuration in which the projections 5 and 7 and the recesses 6 and 8 are intermittently formed on the plane division plane X or the elevation plane division plane Y. In such a case, in particular, the projection 5 , 7 can be reduced, but conversely, the sealing performance due to the fitting is lowered, so that it is necessary to have an intermittent structure in the optimum range.

  The convex portions 5 and 7 provided in the first case 2 are formed to have a substantially constant width L from the base portion to the tip as shown in FIG. 4, and will be described in detail from the base to the tip. It is slightly tilted and the width of the tip is slightly smaller.

  Further, the recesses 6 and 8 provided in the second case 3 are formed with a substantially uniform width La from the base to the tip as shown in FIG. And the width of the lower end is slightly smaller.

  And the protective sheet 9 by which the adhesive agent was apply | coated to the whole surface is provided in the surface to which the convex parts 5 and 7 and the recessed parts 6 and 8 mutually fit. Here, the protective sheet 9 may be one in which an adhesive is applied instead of the adhesive.

  That is, the protective sheet 9 is affixed to the convex portions 5 and 7 not only on the outer surfaces of the convex portions 5 and 7 but also on the periphery of the base portion, with the adhesive-coated surface being affixed.

  Further, the protective sheet 9 is attached to the recesses 6 and 8 not only on the inner surfaces of the recesses 6 and 8 but also on the periphery of the base portion, with the adhesive-coated surface as an attachment surface.

  In other words, the protective sheet 9 extends to the split surface (joint surface) associated with the fitting of the first case 2 and the second case 3 in addition to the fitting surfaces of the convex portions 5 and 7 and the concave portions 6 and 8. Is provided.

  In FIG. 1, as described above, the heat insulating case 1 is formed in a hollow shape, and the bottom surface on which the cooling unit 4 is placed is not illustrated, but the bottom surface is integrated with the second case 3. Is formed. If necessary, the heat insulating case 1 can also be constituted by three parts: a first case 2, a second case 3, and a bottom surface.

  Accordingly, the first case 2 and the second case 3 on which the cooling unit 4 is placed are brought together along the plane dividing plane X and the vertical plane dividing plane, and an appropriate pressure is applied from the upper side to the lower side to project into the recesses 6 and 8. By assembling the parts 5 and 7, the assembly of the first case 2 and the second case 3 is completed.

  At this time, the convex portion 5 and the concave portion 6 of the plane dividing surface X are the same in the pressurizing direction and the fitting direction, so that the fitting operation is easy.

  Further, since the fitting is performed in the pressurizing direction even on the inclined vertical surface dividing surface Y, the fitting operation can be easily performed similarly to the flat surface dividing surface X.

  Therefore, in assembling the heat insulating case 1, by pressing the first case 2 from above, the convex portion 7 is caught on the edge of the concave portion 8 particularly on the vertical surface dividing surface Y, and the fitting with the second case 3 is difficult. The heat insulation case 1 can be assembled without causing any trouble.

  Further, in such a fitting state, in addition to the elastic deformation of the convex portions 5 and 7 and the concave portions 6 and 8, the protective sheet 9 is also slightly elastically deformed and the gap between the convex portions 5 and 7 and the concave portions 6 and 8 is filled. It becomes. As a result, the sealing performance of the first case 2 and the second case 3 can be ensured, and the loss of reliability as the heat insulating case 1 can be suppressed.

  Furthermore, when dividing the heat insulating case 1, contrary to when assembling, by applying a force so as to lift the first case 2 upward, the convex portion 5 from the plane dividing surface X and the vertical surface dividing surface Y, respectively. 7 is disengaged from the recesses 6, 8, and the first case 2 can be separated from the second case 3.

  At this time, even when a force is applied in a direction perpendicular to the lifting direction and the convex portions 5 and 7 are folded or the concave portions 6 and 8 are damaged, the protective sheet 9 The breakage of the portions 5 and 7 or the breakage of the recesses 6 and 8 is suppressed.

  As described above, since the force is not applied in a complicated direction in the division and assembly of the heat insulating case 1, workability is good, and damage to the convex portions 5 and 7 at the time of fitting and separation can be particularly suppressed. It can also suppress that the performance of the heat insulation case 1 falls due to.

(Embodiment 2)
A cooling unit including the heat insulating case 1 described in the first embodiment will be described with reference to FIG. FIG. 5 is a schematic diagram of a cooling unit according to Embodiment 2 of the present invention.

  The cooling unit 10 is divided into a machine room A and a cooling room B, and includes a refrigeration cycle having a known configuration in which a compressor 11, a condenser 12, a pressure reducer 13, and an evaporator 14 are connected in an annular shape, and ambient air. A condenser fan 15 that promotes heat exchange of the condenser 12 and an evaporator fan 16 that promotes heat exchange between the ambient air and the evaporator 14 are provided.

  Further, the evaporator 14 and the evaporator fan 16 are disposed in the heat insulating case 1 having the suction port 17 and the blowout port 18.

  Therefore, in the condenser 12 part, the wind flows as indicated by the broken line arrow by the condenser fan 15, and in the evaporator 14 part, the air passes through the evaporator 14 from the suction port 17 as indicated by the solid line arrow, and is cooled here. Cold air flows to the outlet 18.

  The heat insulating case 1 is shielded so that the heat from the machine room A does not affect the evaporator 14 side, and is usually disposed exposed in the machine room A. The cooling chamber B is set for convenience. Normally, the suction port 17 and the blowout port 18 of the heat insulation case 1 communicate with the cooling space C through a heat insulation duct (not shown) so that the cold air circulates. It is configured.

  In the cooling unit 10, for example, when it becomes necessary to divide the heat insulating case 1 due to maintenance, as described in the first embodiment, by applying a force to lift the first case 2 upward The convex portions 5 and 7 are separated from the concave portions 6 and 8 on the plane dividing surface X and the vertical surface dividing surface Y, respectively, and the first case 2 can be separated from the second case 3. Moreover, since no force is applied in a complicated direction, workability is good, and damage to the convex parts 5 and 7 can be suppressed particularly during fitting and separation, and the performance of the heat insulating case 1 is reduced due to the damage. It can also be suppressed.

  In addition, since the dividing surface of the heat insulating case 1 is a plane dividing surface X and an inclined vertical surface dividing surface Y, in the design of the heat insulating case 1, restrictions for making the configuration suitable for the built-in configuration in the cooling unit 10 As a result, restrictions on the configuration and shape of the cooling unit by the heat insulating case 1 can be relaxed, and the degree of design freedom in the cooling unit can be improved.

  The heat insulating material and the cooling unit including the heat insulating material according to the present invention can be easily removed even when the dividing surface (bonding surface) of the heat insulating case is not on the same plane. Widely applicable.

The exploded perspective view of the heat insulation case in Embodiment 1 of this invention The partial exploded perspective view which shows the fitting structure of the plane division | segmentation surface part of the heat insulation case in Embodiment 1 The partial exploded perspective view which shows the fitting structure of the elevation surface division | segmentation surface part of the heat insulation case in Embodiment 1 The fragmentary sectional view which shows the structure before the fitting of the convex part in Embodiment 1 The fragmentary sectional view which shows the structure before the fitting of the recessed part in the Embodiment 1 The schematic diagram of the cooling unit in Embodiment 2 of this invention The perspective view which shows the division | segmentation state of the heat insulation case provided in the cooling unit of a prior art Partial cross-sectional view of the jetty-shaped convex part provided in the heat insulation case

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heat insulation case 2 1st case 3 2nd case 4 Cooling part 5 Convex part 6 Concave part 7 Convex part 8 Concave part 9 Protection sheet 10 Cooling unit 11 Compressor 12 Condenser 13 Decompressor 14 Evaporator 15 Condenser fan 16 Evaporator fan X Plane split plane Y Elevation split plane

Claims (4)

  A heat insulating case formed of a styrene molding material, having a hollow inside and having a continuous dividing surface, is constituted by a first case and a second case that are divided with the dividing surface as a boundary, and further, the first and second cases A projecting ridge-like convex part protruding with substantially the same width dimension in the dividing direction is provided on one of the dividing surfaces, and the convex part is fitted to the other dividing surface of the first or second case. The heat insulation case which provided the 1st protective sheet which provided the groove-shaped recessed part which carries out, and was closely_contact | adhered to this fitting surface in the fitting surface with the other party in at least any one of the said convex part or a recessed part.   The heat insulation case of Claim 1 which provided the 2nd protection sheet made from the same material as said 1st protection sheet in the mating surface of the other party fitted to the convex part or recessed part which provided said 1st protection sheet.   The heat insulation case of Claim 1 or 2 which affixed said 1st, 2nd protective sheet on the fitting surface of the convex part or the recessed part with the adhesive agent or the adhesive.   Compressor, decompressor, condenser, refrigeration cycle in which the evaporator is connected in a ring, 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, wherein the evaporator and the evaporator fan are arranged in a heat insulating case according to any one of claims 1 to 3.

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