JP2005226910A - Refrigeration storage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigeration storage wherein a refrigeration unit wherein a compressor, a condenser, a refrigeration box, or the like are integrated can be attached without trouble to a bottom wall of a heat insulating box body such that cold air circulation can be carried out. <P>SOLUTION: The refrigeration storage chamber is provided with a cooler and a blower housed in a refrigeration chamber composed in the refrigeration box, the refrigeration unit wherein the compressor, the condenser, or the like are provided and integrated, a cold air discharge opening and a cold air suction opening formed on the bottom wall of the heat insulating box body comprising a ceiling of a machine chamber, and communicated with a storage chamber interior and a machine chamber interior, a pair of suspension rails provided on both side upper parts of the refrigeration unit, and a pair of support rails positioned in both sides of the cold air discharge opening and the cold air suction opening, and provided on the bottom wall of the heat insulating box body. In a state of the suspension rails supported on the support rails, a discharge side and a suction side of a refrigeration chamber correspond to the cold air discharge opening and a cold air suction opening lower side, and a lifting mechanism is provided for lifting the refrigeration unit in a bottom wall direction in this state. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a cooling storage unit in which a cooling unit in which a compressor and a cooler are integrally formed is incorporated below a heat insulating box that forms a storage chamber.

  Conventionally, this type of cold storage used as a low-temperature showcase has a machine room below a storage room configured in a heat insulation box, and a cold air discharge port communicating with the machine room on the bottom wall of the heat insulation box. And a cold air inlet is formed. In the machine room, a cooling box having an opening on the upper surface is provided in contact with the bottom wall of the heat insulating box, and in this cooling box, a cooler constituting a cooling unit and a fan for the cooler are disposed. The storage chamber and the cooling box are communicated with each other through the cold air inlet and the cold air outlet. Also, on the lower side of the cooling box of the machine room, a compressor, a condenser, a condenser blower, etc. that constitute a cooling unit together with the cooler are installed on a mounting base having a caster for movement on the bottom surface. The refrigerant circuit is configured.

Moreover, the cooling box is provided in the upper part of the mounting base, and is detachable from the bottom wall of the heat insulating box. The cooling box and the cooler, the blower for the cooler, the compressor, the condenser, and the like can be delivered to the machine room together with the mounting base using a caster, and the cooling unit can be separated from the heat insulating box ( (See Patent Document 1).
JP 2000-105058 A

  However, in the conventional configuration as described above, since cool air leaks from the gap formed between the upper surface opening of the cooling box and the cool air discharge port and the cool air suction port, the cooler and the cooler The cooling box provided with the cooler fan must be lifted and fixed to the bottom wall of the heat insulating box with a fixture or the like. Therefore, there is a problem that the mounting workability of the cooling unit becomes complicated. Further, at this time, the cooling box must be fixed at a position corresponding to the cold air suction port and the cold air discharge port formed on the bottom wall of the heat insulating box body, which makes positioning difficult and causes further deterioration of workability. was there.

  The cooling storage of the present invention comprises a machine room below a storage room configured in a heat insulation box, a cooler and a blower housed in a cooling room configured in the cooling box, A cooling unit integrated with a compressor, a condenser, etc., and a cool air discharge port and a cool air suction formed on the bottom wall of the heat insulation box that becomes the ceiling of the machine room and communicates between the storage room and the machine room A pair of suspension rails provided on the upper sides of the cooling unit, and a pair of support rails provided on the bottom wall of the heat insulation box located on both sides of the cold air discharge port and the cold air suction port, While the suspension rail is supported on the support rail, the discharge side and the suction side of the cooling chamber correspond to the cold air discharge port and the lower side of the cold air suction port, respectively, and push up the cooling unit in that state toward the bottom wall A mechanism is provided.

  According to a second aspect of the present invention, in the cooling storage room according to the present invention, the cold air inlet of the bottom wall of the heat insulating box is an inclined wall whose front portion is inclined lower rearward.

  According to a third aspect of the present invention, in the cooling storage of the first aspect, the cold air suction port of the bottom wall of the heat insulation box is an inclined wall whose front and rear walls are inclined downward inward.

  According to a fourth aspect of the present invention, there is provided the cooling storage according to any one of the above-mentioned inventions, wherein the push-up mechanism is provided on the support rail and abuts on the suspension rail and pushes up both ends in the longitudinal direction of the suspension rail in conjunction with each other. .

  According to a fifth aspect of the present invention, there is provided a cooling storehouse according to the above invention, wherein the push-up mechanism includes a push-up arm having a predetermined length dimension rotatably attached to a support rail by a pivot shaft at an upper end portion. Has a cam surface that comes into contact with the suspension rail while the radius from the rotation shaft changes, and the cam surface of the portion where the radius from the rotation shaft becomes larger as a result of rotation is in contact with the suspension rail To push up the suspension rail.

  According to a sixth aspect of the present invention, in the above-described cooling storage, the push-up arms are respectively attached to both ends in the longitudinal direction of the support rail and are connected by interlocking link arms.

  According to a seventh aspect of the present invention, there is provided the cooling storage according to any of the above-mentioned inventions, wherein a guide member is provided at the bottom of the machine room, and the suspension rail is positioned above the support rail in a state where the bottom of the cooling unit rides on the guide member. To do.

  In the cooling storage of the invention of claim 8, in each of the above inventions, stoppers are provided at both ends in the longitudinal direction of the support rail to prevent the suspension rail from moving in the longitudinal direction while the cooling unit is pushed up. Is.

  According to a ninth aspect of the present invention, in the above-described invention, in each of the above inventions, a suction port cover for preventing a short circuit of the cold air from the cold air outlet is attached to the storage chamber side of the cold air inlet.

  According to a tenth aspect of the present invention, there is provided a cooling storage unit according to any of the above-mentioned inventions, wherein a plurality of cold air outlets and cold air inlets are formed on the bottom wall of the heat insulating box, and cooling units respectively corresponding to the cold air outlets and the cold air inlets are provided. A plurality are attached.

  In the cooling storage of the present invention, the machine room is configured below the storage chamber configured in the heat insulation box, and the cooler and the blower housed in the cooling chamber configured in the cooling box, and the compressor A cooling unit integrated with a condenser or the like, a cold air discharge port and a cold air suction port formed on the bottom wall of the heat insulation box serving as the ceiling of the machine room and communicating between the storage room and the machine room, A pair of suspension rails provided on both upper sides of the cooling unit, and a pair of support rails provided on the bottom wall of the heat insulation box located on both sides of the cold air outlet and the cold air inlet, In the state where the rail is supported on the support rail, the discharge side and the suction side of the cooling chamber correspond to the cold air discharge port and the lower side of the cold air intake port, respectively, and the push-up mechanism that pushes the cooling unit toward the bottom wall in that state This push-up The configuration, push up the cooling unit to the insulation box body side, the cooling box can be pressed against the bottom wall side of the insulating box body.

  As a result, a cooling unit in which a compressor, a condenser, a cooling box, etc. are integrated is attached to the bottom wall of the heat insulation box without any trouble, and the cool air exchanged with the cooler is discharged from the cool air discharge port into the storage chamber by the blower. The cool air circulation that sucks into the cooling chamber from the cool air suction port is configured, and the storage chamber can be cooled. In particular, a pair of suspension rails are provided on both upper sides of the cooling unit, and the suspension rails are supported on the support rails on the bottom wall of the heat insulation box, so that the ends of the suspension rails are on the support rails. Since it can be mounted and slid, the cooling unit can be easily attached.

  According to invention of Claim 2, in the said invention, since the cold-air inlet of the bottom wall of a heat insulation box is made into the inclination wall which the front part inclined low back, the said inclination wall WHEREIN: The cool air on the front side can be effectively guided into the cooling chamber.

  According to the invention of claim 3, in the invention of claim 1, the cold air suction port of the bottom wall of the heat insulation box is formed as an inclined wall with the front and rear walls inclined low inward, so it is formed in the cooling box. Thus, the cooling air inlet can be made smaller, whereby the cooling unit itself can be reduced in size.

  According to the invention of claim 4, in addition to the above, the push-up mechanism is provided on the support rail, abuts on the suspension rail, and pushes up both ends in the longitudinal direction of the suspension rail in conjunction with each other. The suspension rail is supported on the support rail, and both end portions on both sides of the cooling unit can be pushed up at the same time with the discharge side and the suction side of the cooling chamber corresponding to the cold air discharge port and the cold air suction port lower side, respectively. Thus, the push-up operation can be performed smoothly, and the sealing performance between the cooling box and the heat insulating box is improved.

  According to the invention of claim 5, in addition to the above, the push-up mechanism includes a push-up arm having a predetermined length dimension that is pivotally attached to the support rail by a pivot shaft at the upper end portion. As the radius from the rotation shaft changes, the cam surface is in contact with the suspension rail, and the portion of the cam surface that is rotated to increase the radius from the rotation shaft comes into contact with the suspension rail. Since the suspension rail is pushed up, the heavier cooling unit can be easily pushed up using the rotation of the cam surface of the push-up arm and the lever principle.

  According to the invention of claim 6, in addition to the above, the push-up arms are respectively attached to both ends in the longitudinal direction of the support rail and are connected by the link arms for interlocking. The push-up arm located at the portion is interlocked with the link arm, so that both end portions on both sides of the cooling unit can be smoothly pushed up simultaneously.

  According to the invention of claim 7, in addition to each of the above inventions, a guide member is provided at the bottom of the machine room, and the suspension rail is positioned above the support rail in a state where the bottom of the cooling unit rides on the guide member. As a result, the positioning of the cooling unit and the operation of supporting the suspension rail on the support rail can be performed at the same time, and the mounting operation of the cooling unit is further facilitated.

  According to the invention of claim 8, in addition to the above-mentioned inventions, stoppers are provided at both ends in the longitudinal direction of the support rail to prevent the suspension rail from moving in the longitudinal direction while the cooling unit is pushed up. Therefore, it is possible to accurately position the cooling unit and to prevent the front and rear displacement after the mounting.

  According to the ninth aspect of the present invention, in addition to the above-mentioned inventions, since the suction port cover for preventing a short circuit of cold air from the cold air discharge port is attached to the storage chamber side of the cold air suction port, It is possible to satisfactorily cool the entire storage room by suppressing the short circuit of cold air.

  According to the invention of claim 10, in addition to the above inventions, a plurality of cold air outlets and cold air inlets are formed on the bottom wall of the heat insulating box, and cooling units respectively corresponding to the cold air outlets and the cold air inlets are provided. Since a plurality of cooling units are attached, it is possible to attach a plurality of cooling units according to the volume of the storage chamber, and it is also possible to partition the storage chamber and cool to different temperatures with different cooling units.

  Therefore, the present invention was made in order to solve the conventional technical problems, and a cooling unit in which a compressor, a condenser, a cooling box, and the like are integrated is attached to the bottom wall of the heat insulating box without trouble. To provide a cooling storage that can cool the storage chamber by forming a cool air circulation in which cool air exchanged with the cooler is discharged from the cool air discharge port into the storage chamber by a blower and sucked into the cooling chamber from the cold air suction port. Objective. Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a front view of a cooling storage 1 to which the present invention is applied, FIG. 2 is a front view of the lower portion of the cooling storage 1, FIG. 3 is a longitudinal side view of the cooling storage 1, and FIG. FIG. 5 is a vertical side view of the cooling storage 1 with the cooling unit R pulled out forward.

  The cooling storage 1 of the embodiment has a main body constituted by a rectangular heat insulating box 2 that opens to the front. The heat insulation box 2 is composed of a steel plate outer box 3 having an opening on the front surface, an inner box 4 having an opening on the front surface, and a heat insulating material 5 filled with foam between the inner and outer boxes 3 and 4. Has been. And in the heat insulation box 2, the storage chamber 6 opened to the front is formed, and the front opening of the said storage chamber 6 is obstruct | occluded so that opening and closing is possible by the glass doors 7 and 7 which can see through the inside. These glass doors 7 and 7 are of a sliding door type that is slidable left and right. The storage chamber 6 is provided with a plurality of shelves 11... For placing food or the like on the shelf receiver 9.

  A pedestal angle 12 having a predetermined height is attached to the bottom surface of the heat insulation box 2, and both side surfaces of the pedestal angle 12 are covered with a decorative panel 13 together with both side surfaces of the heat insulation box 2. ing. Thereby, the machine room 21 is formed below the heat insulating box 2. Note that guide members 62 and 62, which will be described later in detail, are attached to the front lower side of the base leg angle 12 constituting the bottom of the machine room 21. In addition, a cold air suction port 14 and a cold air discharge port 15 are formed in the front and rear of the bottom wall 2A of the heat insulating box 2 so as to penetrate the heat insulating material 5. As shown in FIG. 3, the cold air inlet 14 is an inclined wall 14 </ b> A formed such that the front edge and the rear edge are inclined downward toward the inside.

  A cooling box 22 having an opening on the upper surface is provided in contact with the lower surface of the bottom wall 2A of the heat insulating box 2 serving as the ceiling of the machine room 21. Inside the cooling box 22, a cooling chamber 23 is formed and a cooler 24 constituting a cooling device is disposed, and a cooler blower 25 is disposed on the front side. A cooling air inlet 27 and a cold air outlet 28 on the cooling box 22 side are formed in the upper opening of the cooling box 22 by a partition plate 26 as shown in FIG. The cold air inlet 27 and the cold air outlet 28 correspond to the cold air inlet 14 and the cold air outlet 15 formed in the bottom wall 2A of the heat insulation box 2 respectively. Further, a sealing material 29 is attached to the opening edge of the cooling box 22 so as to come into close contact with the bottom surface of the bottom wall 2 </ b> A of the heat insulating box 2. The details of the mechanism for fixing the upper surface of the cooling box 22 in close contact with the lower surface of the bottom wall 2A of the heat insulating box 2 will be described later.

  On the other hand, on the inner side of the back wall 2B of the heat insulating box 2, a partition plate 31 constituting a duct 30 that connects the cool air discharge port 15 formed in the bottom wall 2A and the upper part of the storage chamber 6 is attached. . The partition plate 31 has a plurality of openings (not shown) for supplying cold air discharged from the cooler blower 25. Thereby, cold air is effectively supplied into the storage chamber 6. The partition plate 31 may be formed with a locking portion for locking the shelf 11 together with the shelf receiver 9.

  Further, in this embodiment, a suction port cover 40 as shown in FIG. 6 is attached on the bottom wall 2A of the heat insulating box 2 corresponding to the position where the cool air suction port 14 is formed. This suction port cover 40 is a rectangular steel plate member opened downward, and a plurality of suction holes 41 are formed across the front surface, upper surface, and both side surfaces excluding the rear end surface, upper surface rear portion, and both side surface rear portions. Yes. Thereby, the suction | inhalation of the cold air from the rear part of the suction inlet cover 40 can be suppressed. Therefore, it becomes possible to suppress a short circuit of the cool air that is directly sucked from the cool air suction port 14 by the cool air discharged from the cool air discharge port 15 formed behind the cool air suction port 14, and the entire storage chamber 6 is cooled well. Will be able to. In addition, the suction port cover 40 can suppress the inconvenience that a product or the like placed in the storage chamber 6 falls into the cold air suction port 14.

  On the other hand, a mounting base 32 that constitutes the bottom of the cooling unit R is housed in the machine room 21, and a compressor 33 that constitutes a cooling device together with the cooler 24 (see FIG. 4 only). The condenser 34, the condenser blower 35, and a control box (not shown) are provided. An openable / closable panel 36 is attached to the front surface of the machine room 21 to conceal the machine room 21. The panel 36 has a plurality of vent holes 37 corresponding to the front side of the condenser 34.

  Here, the cooler 24 in the cooling box 22 is connected to the compressor 33, the condenser 34, and the like on the mounting base 32 by a refrigerant pipe, and constitutes a known refrigerant circuit. The cooling box 22 is detachably held by cooling box supports 38 provided at positions corresponding to the four corners of the lower surface of the cooling box 22. Thereby, the cooling unit R including the cooling box 22 and the cooler 24, the cooler blower 25, the compressor 33, the condenser 34, and the like can be delivered into the machine room 21 together with the mounting base 32. It can be separated from the heat insulating box 2.

  Next, with reference to FIG. 7 to FIG. 14, a mechanism for tightly fixing the cooling box 22 to the lower surface of the bottom wall 2 </ b> A of the heat insulating box 2 will be described. 7 is a partially enlarged perspective view of the lower part of the cooling storage 1, FIG. 8 is a perspective view of the bottom wall 2 </ b> A of FIG. 7, FIG. 9 is a perspective view of components of the close-contact fixing mechanism, and FIG. 11 is a partially enlarged side view of the state where the push-up mechanism 55 is lowered, FIG. 12 is a partially enlarged side view of the state where the push-up mechanism 55 is pushed up, FIG. 13 is a longitudinal front view of FIG. 11, and FIG. FIG.

  The mechanism for tightly fixing the bottom surface of the bottom wall 2 </ b> A of the cooling box 22 includes a pair of suspension rails 45, 45, a pair of support rails 51, 51, and a push-up mechanism 55. The suspension rails 45, 45 are rail members that are fixed to the upper portions on both sides of the cooling unit R, that is, the upper portions on both sides of the cooling box 22, and have a substantially U-shaped cross section that opens downward as shown in FIG. . A plurality of screw holes 45B are formed in the side surface 45A of the suspension rail 45 located on the cooling box 22 side, and the suspension rail 45 is formed by a screw member 46 (only FIGS. 13 and 14 are shown). It is fixed to the cooling box 22.

  The support rails 51 and 51 are rail members fixed to the lower surface of the bottom wall 2A of the heat insulating box 2 located on both sides of the cold air suction port 14 and the cold air discharge port 15, and have a cross-section that opens upward as shown in FIG. It is U-shaped. Further, the upper end of the side surface 51A of the support rail 51 located on the side opposite to the cooling box 22 is formed by a predetermined dimension higher than the upper end of the side surface 51B located on the cooling box 22 side, and is substantially outward. A mounting surface 51C bent at a right angle is formed. A plurality of screw holes 51D are formed in the mounting surface 51C, and the support rail 51 is fixed to the lower surface of the bottom wall 2A of the heat insulating box 2 by a screw member 52 (only FIG. 13 and FIG. 14 are shown). . At this time, the support rails 51 and 51 are in a state where the suspension rails 45 and 45 are supported, and the cold air inlet 27 and the cold air outlet 28 of the cooling chamber 23 are the cold air inlet 14 and the cold air outlet of the storage chamber 6, respectively. It is assumed that it is attached at a position corresponding to the lower side of the outlet 15.

  Further, a plurality of screw holes 51E for attaching the push-up mechanism 55 are formed on the side surface 51B located on the cooling box 22 side, and in this embodiment, two screw holes 51E are formed. Furthermore, stoppers 53 and 54 are formed at the front end and the rear end of the support rail 51 from the side surface 51A toward the side surface 51B, respectively.

  In this embodiment, the push-up mechanism 55 includes two push-up arms 56 and 56 attached to the front and rear ends of each support rail 51 and a link arm 57 for rotating the push-up arms 56 and 56 attached to the front and rear in conjunction with each other. It consists of. The push-up arm 56 is an arm member having a predetermined length dimension, and has a shaft hole 56A into which the rotation shaft 58 can be inserted at the upper end portion. The shaft hole 56 </ b> A is fastened together by a screw hole 51 </ b> E formed in the support rail 51 and a rotation shaft 58 so as to be rotatable.

  The upper end of the push-up arm 56 is formed with a cam surface 56B that is rotatable about a rotation shaft 58. The cam surface 56B supports the suspension rail 45 on the support rail 51. In the state, it contacts the upper wall of the suspension rail 45. The cam surface 56B is formed so that the radius from the rotation shaft 58 increases as the push-up arm 56 is rotated forward about the rotation shaft 58. Therefore, as shown in FIGS. 11 and 13, the push-up arm 56 is set in a vertical state and the suspension rail 45 is supported on the support rail 51, and then the push-up arm 56 is rotated forward about the rotation shaft 58 to be in a horizontal state. Thus, as shown in FIGS. 12 and 14, the suspension rail 45 that abuts on the cam surface 56B is pushed upward by the radius increase of the cam surface 56B.

  The upper end and the front surface of the push-up arm 56 constituting the cam surface 56B are formed with a horizontal plane, and can hold the suspension rail 45 stably when the push-up arm 56 is in a substantially vertical state and a substantially horizontal state. It is said that. That is, when the push-up arm 56 is in a substantially horizontal state, the suspension rail 45 is separated from the support rail 51 and is held only by the cam surface 56B of the push-up arm 56, but the suspension rail 45 is pushed up. It becomes possible to hold stably.

  Further, at the rear end of the push-up arm 56, as shown in FIG. 10, for example, a link arm mounting portion 56C that is bent substantially vertically to the side of the suspension rail 45 and then bent substantially vertically rearward. Is formed. A screw hole 56D is formed in the link arm attachment portion 56C, and the link arm 57 is fixed by the screw members 60, 60 across the link arm attachment members 56C, 56C of the front and rear push-up arms 56, 56.

  As a result, the front and rear push-up arms 56 and 56 are connected by the link arm 57, so that the rear push-up arm 56 can be operated smoothly by operating the front push-up arm 56. It becomes.

  Next, the guide member 62 provided at the bottom of the machine room 21 will be described with reference to FIGS. 15 to 18. 15 is a perspective view of the left and right guide member 62, FIG. 16 is a cross-sectional view of the guide member 62, FIG. 17 is a plan view of the guide member 62, and FIG. 18 is a side view of the guide member 62. The guide members 62 are provided on the front lower side of the pedestal angle 12 constituting the bottom of the machine room 21 and at positions corresponding to both side ends of the mounting base 32 of the cooling unit R. The guide members 62 are It is comprised by the plate-shaped member made from a steel plate. The guide member 62 has an attachment surface 62A fixed to the front lower side of the pedestal angle 12 constituting the bottom of the machine room 21, and an inclination formed by bending the side end of the attachment surface 62A substantially vertically. A surface 62B, a support surface 62C formed by bending the side end of the inclined surface 62B at a substantially right angle, and a guide surface 62D formed by bending the side end of the support surface 62C substantially vertically. It consists of.

  Screw holes 62E for fixing to the pedestal angle 12 by screwing are formed in the mounting surface 62A on the front and rear sides. The upper end of the inclined surface 62B is formed to be highly inclined from the front to the back, and the support surface 62C is formed to be highly inclined from the front to the back. The inclination of the support surface 62C is such that when the cooling unit R placed on the front end is pushed up along the support surface 62C, the rear end of the suspension rail 45 attached to the cooling unit R is It is assumed that it is formed to have a height that matches the front end of the support rail 51 fixed to the body 2.

  With the above configuration, the housing of the cooling unit R in the machine room 21 and the fixing operation of the cooling box 22 will be described with reference to FIGS. First, as shown in FIG. 19, both rear ends of the mounting base 32 of the cooling unit R are placed on the guide members 32 fixed to the base leg angle 12. At this time, since the cooling unit R can be placed on the guide member 32 only by lifting a part of the mounting base 32 by a small height, the burden of assembling work can be reduced. .

  Thereafter, the cooling unit R can be accommodated in the machine room 21 by riding the cooling unit R along the support surface 62 </ b> C of the guide member 32. At this time, since the support surface 62C is formed to be highly inclined from the front to the rear, the rear end of the suspension rail 45 attached to the cooling unit R is smoothly fixed to the heat insulation box 2. It can be located above the front part of the support rail 51. As a result, the positioning of the cooling unit R and the operation of supporting the suspension rail 45 on the support rail 51 can be performed simultaneously by merely sliding the cooling unit R back along the guide member 32. Installation work can be facilitated.

  The cooling unit R is slid rearward until the rear end of the suspension rail 45 on the cooling unit R side comes into contact with a stopper 54 formed on the rear end of the support rail 51 on the heat insulation box 2 side (see FIG. 21). .) Accordingly, the cold air inlet 27 and the cold air outlet 28 formed in the cooling box 22 of the cooling unit R correspond to the lower side of the cold air inlet 14 and the cold air outlet 15 formed in the bottom wall 2A of the heat insulating box 2. Thus, accurate positioning can be performed. The simplification of the mounting operation and the leakage of cold air due to the displacement before and after fixing the cooling box 22 can be suppressed.

  The push-up mechanism 55 is configured as described above with the cold air inlet 27 and the cold air outlet 28 of the cooling box 22 being below the cold air inlet 14 and the cold air outlet 15 of the bottom wall 2A of the heat insulating box 2. The left and right push-up arms 56 to be rotated are rotated substantially at a right angle forward. At this time, since the left and right push-up arms 56, 56 are connected by push-up arms 56, 56 and a link arm 57 provided at the rear, respectively, the left and right push-up arms 56, 56 are operated at the same time in four places. It becomes possible to rotate the push-up arms 56.

  As a result, the suspension rail 45 supported by the support rail 51 is pushed upward by a radius variation from the rotation shaft 58 of the cam surface 56B of the push-up arm 56 as described above (see FIG. 22). Thereby, the cooling box 22 to which the suspension rail 45 is attached is also pushed upward, and the upper surface opening of the cooling box 22 can be brought into contact with the lower surface of the bottom wall 2 </ b> A of the heat insulating box 2. At this time, since the sealing material 29 is attached to the opening edge of the cooling box 22 as described above, the upper surface opening of the cooling box 22 can be pressed against the bottom wall 2 </ b> A by expansion and contraction of the sealing material 29. .

  Therefore, the cooling unit R in which the compressor 33, the condenser 34, the cooling box 22 and the like are integrated is attached to the bottom wall 2A of the heat insulating box 2 without any trouble, and the cool air exchanged with the cooler 24 is cooled by the cooler blower 25. The inside of the storage chamber 6 can be cooled by constituting a cool air circulation that is discharged from the cold air discharge port 15 into the storage chamber 6 and sucked into the cooling chamber 23 from the cold air suction port 14. In particular, the end of the suspension rail 45 attached to the upper part on both sides of the cooling unit R can be slid on the support rail 51 attached to the bottom wall 2A of the heat insulation box 2, so that the cooling unit R Installation work is also easy.

  In the present embodiment, the cold air inlet 14 formed in the bottom wall 2A of the heat insulation box 2 is an inclined wall 14A whose front and rear edges are inclined inwardly. It can be effectively guided into the cooling chamber 23. Furthermore, since the cool air suction port 14 on the cooling chamber 23 side can be made smaller than the storage chamber 6 side, the cool air suction port 27 on the cooling box 22 side communicating with the cool air suction port 14 can also be made smaller. Thus, the entire cooling unit R can be reduced in size.

  Further, since the push-up arm 56 constituting the push-up mechanism 55 is configured to push up both ends in the longitudinal direction of the suspension rail 45 in conjunction with the link arm 57, the suspension rail 45 is placed on the support rail 51. The cold air outlet 28 and the cold air inlet 27 of the cooling chamber 23 are made to correspond to the lower side of the cold air inlet 14 and the cold air outlet 15 of the heat insulating box 2, and both end portions on both sides of the cooling unit R are At the same time, it can be pushed up, the push-up operation can be performed smoothly, and the sealing property between the cooling box 22 and the heat insulating box 2 is improved.

  In particular, in this embodiment, the push-up mechanism 55 has a cam surface 56B that abuts on the suspension rail 45 while the radius of the push-up arm 56 from the rotary shaft 58 changes, and is rotated to turn the rotary shaft 58. Since the cam surface 56B of the portion having a larger radius from the abutment is in contact with the suspension rail 45, the suspension rail 45 is pushed up. Therefore, the rotation of the cam surface 56B of the push-up arm 56 and the lever principle are used to increase the weight. It becomes possible to easily push up the bulky cooling unit R.

  In this embodiment, the front end of the suspension rail 45 is restricted from moving back and forth by the stopper 53 formed at the front end of the support rail 51 in a state where the cooling box 22 is pushed upward by the push-up arm 56. Therefore, a more stable attachment can be performed.

  In the present embodiment, as described above, the pair of cold air inlets 14 and cold air outlets 15 are formed in the bottom wall 2A of the heat insulating box 2, and the cooling storage 1 to which the corresponding cooling units R are attached has been described in detail. However, the storage chambers 106 and 106 in the heat insulating box 2 are divided into two chambers by the partition wall 101 as in a cooling storage 100 as shown in FIG. 23, and cooling corresponding to the respective storage chambers 106 and 106 is performed. The present invention can also be applied when two units R are provided. That is, the cold air inlets 114 and 114 and the cold air outlets 115 and 115 corresponding to the storage chambers 106 and 106 are formed in the bottom wall 2A of the heat insulating box 2, and the cooling unit corresponding to the cold air inlet and the cold air outlet is formed. R and R are attached in the same manner as in the above-described embodiment. In this case, an example in which the inside of the heat insulating box 2 is divided into two chambers and two cooling units R are provided is shown, but the present invention is not limited thereto.

  Accordingly, the number of cooling units R can be attached according to the volume of the storage chamber, and the storage chamber can be partitioned and cooled to different temperatures by different cooling units R.

It is a front view of a cooling storage. It is a bottom perspective front view of a cooling storage. It is a vertical side view of a cooling storage. It is a perspective view of a cooling unit. It is a vertical side view of a cooling storage. It is a perspective view of a suction inlet cover. It is a partial expansion perspective view of a cooling storage lower part. FIG. 8 is a perspective view of the bottom wall of FIG. 7. It is a perspective view of a contact fixing mechanism component. It is the perspective view seen from the direction which performs FIG. It is a partial expanded side view of the state where the raising mechanism was lowered. It is a partial expanded side view of the state which pushed up the raising mechanism. It is a vertical front view of FIG. It is a vertical front view of FIG. It is a perspective view of a left-right guide member. It is sectional drawing of a guide member. It is a top view of a guide member. It is a side view of a guide member. It is a side view at the time of cooling unit accommodation. It is a front view at the time of cooling unit accommodation. It is a see-through | perspective perspective view of the cooling storage lower part of the state which lowered | hung the raising mechanism. It is a see-through | perspective perspective view of the cooling storage lower part of the state which raised the raising mechanism. It is a lower part expansion perspective view of the cooling storage of other Examples.

Explanation of symbols

R Cooling unit 1,100 Cooling storage 2 Heat insulation box 2A Bottom wall 6,106 Storage chamber 12 Base angle 14, 114 Cold air inlet 14A Inclined wall 15, 115 Cold air outlet 21 Machine chamber 22 Cooling box 23 Cooling chamber 24 Cooling 25 Cooler blower 27 Cold air inlet (cooling box side)
28 Cold air outlet (cooling box side)
29 Sealing material 32 Mounting base 33 Compressor 34 Condenser 35 Condenser blower 40 Suction cover 41 Suction hole 45 Suspension rail 45A Side surface 45B Screw hole 46, 52, 60 Screw member 51 Support rail 51A, 51B Side surface 51C Mounting surface 51D Screw hole 53, 54 Stopper 55 Push-up mechanism 56 Push-up arm 56A Shaft hole 56B Cam surface 56C Link arm mounting portion 56D Screw hole 57 Link arm 58 Rotating shaft 62 Guide member 62A Mounting surface 62B Inclined surface 62C Support surface

Claims (10)

In the cooling storage room comprising the machine room below the storage room configured in the heat insulation box,
A cooling unit and a blower housed in a cooling chamber configured in a cooling box, a compressor, a cooling unit integrated with a condenser and the like, and
A cold air outlet and a cold air inlet that are formed on the bottom wall of the heat insulation box that becomes the ceiling of the machine room, and that connect the storage room and the machine room;
A pair of suspension rails provided on both upper sides of the cooling unit;
A pair of support rails provided on the bottom wall of the heat insulation box located on both sides of the cold air outlet and the cold air inlet;
In the state where the suspension rail is supported on the support rail, the discharge side and the suction side of the cooling chamber correspond to the cold air discharge port and the cold air suction port lower side, respectively, and the cooling unit is A cooling storehouse provided with a push-up mechanism that pushes up toward the bottom wall.   The cooling storage according to claim 1, wherein the cold air inlet of the bottom wall of the heat insulation box is an inclined wall whose front portion is inclined backward.   The cooling storage according to claim 1, wherein the cold air suction port of the bottom wall of the heat insulation box is an inclined wall whose front and rear walls are inclined inwardly.   The said raising mechanism is provided in the said support rail, Abuts on the said suspension rail, and pushes up the both ends of the longitudinal direction of the said suspension rail in conjunction with Claim 1, Claim 2, or Claim 3 characterized by the above-mentioned. 3 cold storage.   The push-up mechanism includes a push-up arm having a predetermined length dimension that is rotatably attached to the support rail by a pivot shaft at an upper end portion, and the radius of the push-up arm changes from the pivot shaft. And a cam surface that abuts the suspension rail, and the cam surface of the portion that is rotated to increase the radius from the pivot shaft abuts the suspension rail to push up the suspension rail. The cooling storage according to claim 4.   The cooling storage according to claim 5, wherein the push-up arms are respectively attached to both ends of the support rail in the longitudinal direction and are connected by interlocking link arms.   2. A guide member is provided at the bottom of the machine room, and the suspension rail is positioned above the support rail in a state where the bottom of the cooling unit rides on the guide member. The cooling storage of claim 2, claim 3, claim 4, claim 5 or claim 6.   3. A stopper for preventing movement of the suspension rail in the longitudinal direction when the cooling unit is pushed up is provided at both ends in the longitudinal direction of the support rail. The cooling storage of claim 3, claim 4, claim 5, claim 6 or claim 7.   The suction port cover for preventing the short circuit of the cold air from the said cold air discharge port is attached to the storage chamber side of the said cold air suction port, The claim 1, 2, 3, The cooling storage of claim 4, claim 5, claim 6, claim 7 or claim 8.   A plurality of the cold air outlets and cold air inlets are formed on the bottom wall of the heat insulation box, and a plurality of the cooling units corresponding to the respective cold air outlets and the cold air inlets are attached. The cooling storage of claim 2, claim 3, claim 4, claim 5, claim 6, claim 7, claim 8 or claim 9.

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