JP2007183066A - Cooling storage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily open a cooler chamber. <P>SOLUTION: A cooler chamber 30 is formed in a square box shape by Styrofoam, and is installed on a top surface 10A of a refrigerator main body 10 as a part of a cooling unit 15. The cooler chamber 30 is divided into two of a lower case 31 and an upper case 50 joined on an upper surface of the lower case 31. Divided surfaces 55, 37 are formed as inclined surfaces 55B, 37B which declines toward a front side at the depth, and horizontal surfaces 55C, 37C on the front side. A projection 38 is formed on the divided surface 37 of the lower case 31, and a seal groove 56 for engaging the projection 38 is formed on the divided surface 55 of the upper case 50. The upper case 50 can be removed by pulling after lifting until the projection 38 is removed from the seal groove 56. Even when a sufficient space is not formed above the cooler chamber 30, an inside of the cooler chamber 30 can be opened. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a structure of a cooler chamber in a cooling storage.

For example, in a prefabricated refrigerator, a refrigeration apparatus such as a compressor and a condenser and a cooler chamber containing a cooler are arranged side by side on a base to form a unit, and this cooling unit is mounted on the top surface of the refrigerator body. What you put is known. On the other hand, in order to reduce the weight of the cooling unit, one in which the cooler chamber is formed of a heat insulating material made of foamed resin such as foamed polystyrene is also employed. Usually, the lower case and the upper case attached to the upper surface thereof are used. The structure can be divided (see, for example, Patent Document 1).
JP 2002-22344 A

By the way, in this type of cooler room, when repairing or replacing the cooler or cooler fan housed inside, or for maintenance such as cleaning around the cooler, the upper case is removed and the interior is opened. However, in order to remove the upper case to the near side in the conventional case, it is necessary to lift the upper case until its lower edge (dividing surface) exceeds the upper surface of the cooler, and then pull it out to the front.
At this time, it is sufficient if there is sufficient space above the top surface of the refrigerator body to lift the upper case, but the ceiling of the room where the refrigerator is installed is low, so there is not enough space between the top surface of the refrigerator body. If sufficient, the upper case cannot be lifted as described above. In that case, it was necessary to lower the entire cooling unit onto the floor and open the cooler chamber again, and complicated work was required, including mounting the cooling unit again after the maintenance was completed.
The present invention has been completed based on the above circumstances, and an object of the present invention is to make it easy to open the cooler chamber.

As a means for achieving the above object, the invention of claim 1 is the one in which a cooler chamber made of a heat insulating material containing a cooler is installed on the top surface of the storage body. The lower case and the upper case attached to the upper surface thereof are divided into two, and the dividing surfaces of both cases are formed by inclined surfaces that are inclined downward from the back side toward the near side, or from the back side. It is characterized in that a horizontal plane is connected to at least one of the upper and lower ends of the inclined surface that is inclined downward toward the front side.
The invention according to claim 2 is the seal groove according to claim 1, in which a protrusion is fitted on one of the dividing surfaces of the lower case and the upper case, and the protrusion is tightly fitted on the other. It is characterized in that is formed.

<Invention of Claim 1>
Since the dividing surface of the upper and lower cases is an inclined surface having a downward slope from the back side toward the near side, or a horizontal surface continuously connected thereto, the upper case can be removed by pulling forward. Even when there is not enough space above the cooler room, the cooler room can be opened without lowering the cooler room to the floor or the like, and maintenance work and the like can be performed efficiently.
In order to take a seal between the dividing surfaces of the upper and lower cases, for example, the upper and lower cases are fastened with a fastening band, but with the fastening, the dividing surface of the upper case replaces the dividing surface of the lower case in the horizontal plane. Since the split surface of the upper case presses the split surface of the lower case vertically by the component force even on the inclined surface, it can be firmly sealed over the entire area of the split surface.

<Invention of Claim 2>
The protrusions on the split surfaces of the upper and lower cases are tightly fitted and joined to the seal grooves of the other split surface, so that a stronger seal can be taken between the split surfaces. When removing the upper case, it can be removed by lifting the upper case until the ridges come out of the seal groove and then pulling it forward. If there is a slight space above the cooler chamber for the height of the ridge, the upper case can be removed while leaving the lower case on the top surface of the storage body.

<Embodiment>
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In this embodiment, a prefabricated refrigerator is illustrated.
In FIG. 1, reference numeral 10 denotes a refrigerator body, which is formed into a box shape by assembling a plurality of heat insulating panels 11, and the inside is a storage room, and a heat insulating door 12 is provided in the center of the front surface. There is a doorway.
A cooling unit 15 is installed on the top surface 10 </ b> A of the refrigerator body 10. As shown in FIG. 2, the cooling unit 15 is provided with a refrigeration apparatus 20 on one side (left side as viewed from the front) on the unit base 16 and is insulated on the other side (same right side). The cooler chamber 30 is installed. In the cooler chamber 30, defrost water from the cooler 63 circulated and connected by the refrigeration apparatus 20 and the refrigerant pipe 26, the cooling fan 66, the cooler 63 and the like is supplied. A drain pan 60 is received.

The unit base 16 is made of a metal plate, and is formed in a shape like a shallow rectangular plate having a horizontally long rectangular shape. A mounting plate 17 projects from the lower edges of the left and right side plates. The attachment plate 17 can be fixed to the top surface 10 </ b> A of the refrigerator main body 10 with a screw. A handle 18 is provided on the front and back edges of the unit base 16.
The refrigeration apparatus 20 includes a compressor 21, a condenser 22 with a condenser fan 23, and the like, and is installed at a position closer to the back side on the left side on the unit base 16 as described above. On the front side of the refrigeration apparatus 20, an electrical box 25 in which a control device for cooling operation and the like are housed is installed.

Subsequently, the cooler chamber 30 and the installation structure thereof will be described.
The cooler chamber 30 is formed of a heat insulating material made of foamed resin such as polystyrene foam, and is divided into a lower case 31 and an upper case 50 attached to the upper surface thereof as shown in FIGS. Has been.
As shown in FIG. 6, the lower case 31 is basically formed in a rectangular box shape having an upper surface opening formed around the peripheral wall of the bottom wall 32. Specifically, the back wall 33 is formed to have a height dimension that is slightly lower than the total height of the cooler chamber 30 over the entire width, whereas the front wall 34 has a height dimension that is about 1/4 of the total height. It is fastened. Note that an inverted trapezoidal concave portion 34 </ b> A is formed on the upper surface of the front wall 34 at the center in the width direction.
In the left and right side walls 35, the portion corresponding to about 60% of the depth of the cooler chamber 30 from the front is the same height as both ends of the front wall 34, and the remaining back side portions are directed to the height of the back wall 33. It is formed to become taller.

Each upper surface of the back wall 33, the left and right side walls 35, and the front wall 34 in the lower case 31 serves as a dividing surface 37 between the upper case 50, and when the dividing surface 37 is viewed from the side, As shown in FIG. 9, the portion corresponding to the thickness of the back wall 33 on the back side is a high horizontal surface 37 </ b> A, and a portion of less than 40% of the depth on the front side has a steep downward slope toward the front. The portion up to the front wall 34 in front of the surface 37B is a horizontal surface 37C having a short height.
On the dividing surface 37 of the lower case 31, a ridge 38 is formed over the entire circumference in the center in the width direction.

At the center of the outer bottom surface of the lower case 31, a fitting protrusion 40 having a slightly smaller outer shape is formed in a step shape. On the other hand, a window hole (not shown) into which the fitting protrusion 40 of the lower case 31 is fitted is opened in the right region of the unit base 16 described above.
On the inner bottom surface of the lower case 31, a receiving surface 42 on which the drain pan 60 is placed is formed in the center in the width direction, and the receiving surface 42 is positioned so that the position of the right corner in front is the lowest position. An inclined hole 43 </ b> D through which the drain pipe 61 provided in the drain pan 60 is inserted is formed from the same position to the upper surface of the front wall 34.
In the region on the left side of the receiving surface 42 in the bottom wall 32, a part of the front side thereof is partitioned by the partition wall 44, thereby forming an insertion space 45 through which the refrigerant pipe 26 and the lead wire are inserted. Three halved insertion holes 46D are formed on the upper surface at a position near the front end.

A suction port 48 penetrating the outer bottom surface is formed in the depth direction to the right of the receiving surface 42 in the bottom wall 32 and is partitioned into three rooms in the depth direction. On the other hand, in the area on the left side of the receiving surface 42 and on the back side of the partition wall 44, a blowout port 49 penetrating the outer bottom surface is also partitioned into three rooms in the depth direction.
Then, while the drain pan 60 is fitted to the receiving surface 42 of the bottom wall 32, the drain pipe 61 is fitted to the insertion hole 43D, and the cooler 63 floats in the right region in the drain pan 60 as shown in FIG. The cooling fan 66 is installed next to the left side. A capillary tube 64 connected to the input side of the cooler 63 is disposed on the front surface of the cooler 63.
As will be described later, the lower case 31 is placed on the unit base 16 with the fitting protrusions 40 fitted in the fitting holes, and the unit base 16 is attached to a predetermined position on the top surface 10A of the refrigerator main body 10. The top wall of the refrigerator body 10 has a through hole that connects the suction port 48, the blowout port 49, and the storage chamber of the lower case 31, although not shown.

As shown in FIGS. 7 and 8, one upper case 50 is formed in a lid shape with a peripheral wall around the front edge and the left and right side edges of the top wall 51. Specifically, the front wall 52 is formed with a drooping length of about 3/4 of the total height of the cooler chamber 30, and is aligned with the concave portion 34A of the lower case 31 at the center in the width direction on the lower surface thereof. A protrusion 52A having an inverted trapezoidal shape is formed.
In the left and right side walls 53, the portion corresponding to about 60% of the depth of the cooler chamber 30 from the front is the same hanging length as both ends of the front wall 52, and the remaining back side portion is directed toward the inner edge of the top wall 51. Thus, the drooping length is gradually reduced.

The lower edge of the top wall 51 in the upper case 50, the lower surfaces of the left and right side walls 53, and the front wall 52 serve as the dividing surface 55 between the lower case 31 and the dividing surface 55 from the side. When viewed, like the dividing surface 37 of the lower case 31, a portion of less than 40% of the depth in front of the horizontal surface 55A having a high predetermined dimension on the back side has a steep downward slope toward the front. A portion of the inclined surface 55B up to the front wall 52 in front of the inclined surface 55B is a low horizontal surface 55C.
On the dividing surface 55 of the upper case 50, a seal groove 56 is formed over the entire circumference in the central portion in the width direction so that the protrusion 38 of the lower case 31 fits tightly.

On the lower surface of the upper case 50 at a position close to the right end of the front wall 52, a half insertion hole 43U for inserting the drain pipe 61 in alignment with the insertion hole 43D of the lower case 31 is formed. Further, a partition wall 58 aligned with the partition wall 44 of the lower case 31 is provided at the corner on the left front side in the upper case 50 so as to hang down from the top wall 51, and is described above together with the lower case 31 side. An insertion space 45 through which the refrigerant pipe 26 and various lead wires are inserted is formed. Two halved insertion holes 46 </ b> U are formed on the lower surface of the left side wall 53 near the front end portion at positions facing the two insertion holes 46 </ b> D of the lower case 31.
In addition, as shown in FIG. 6, the bottom surface of the insertion space 45 is directed toward the drain pan 60 so as to receive the condensed water dripping from the inserted refrigerant pipe 26 and the lead wire and guide it to the drain pan 60. It is formed as an inclined surface with a downward slope. Further, as will be described later, when the upper case 50 is properly placed on the upper surface of the lower case 31, the top wall 51 of the upper case 50 is provided with a cooler 63 or a cooling fan 66 installed in the lower case 31. The top surface of the can be pressed.

  The upper and lower cases 50 and 31 are fastened by a fastening band 70. As shown in FIG. 10, the fastening band 70 is provided with a pair of left and right, and is formed by assembling three angle members 71A to 71C in a gate shape. The angle members 71A to 71C are fitted to the corners of the three edges of the upper edge and the front and rear edges on the left and right sides of the cooler chamber 30 in which the upper and lower cases 50 and 31 are assembled. Yes. From the lower ends of the front and rear angle members 71B and 71C in each fastening band 70, a mounting plate 72 bent at a right angle forward or backward is formed, and each mounting plate 72 can be screwed to the unit base 16. ing.

Then, the effect | action of this embodiment is demonstrated.
When assembling the cooling unit 15, the refrigeration apparatus 20, that is, the compressor 21, the condenser 22, the condenser fan 23, and the like are attached to the left region on the unit base 16. In addition, the lower case 31 constituting the cooler chamber 30 is placed on the right side region of the unit base 16 with the fitting protrusions 40 on the outer bottom surface fitted in the fitting holes. Next, the drain pan 60 is placed on the receiving surface 42 of the bottom wall 32 of the lower case 31 while fitting the drain pipe 61 in the insertion hole 43D.

  Further, a cooler 63, a cooling fan 66, and the like are placed on the drain pan 60, and the refrigerant tube 26 output from the capillary tube 64 and the cooler 63 passes from the insertion space 45 through the insertion hole 46D to pass through the refrigeration apparatus 20. Pulled out to the side. The capillary tube 64 and the output pipe of the refrigerant pipe 26 are circulated and connected to the refrigeration apparatus 20 side. In addition, the cooling fan 66, the in-compartment thermistor for detecting the in-compartment temperature provided on the suction port 48 side, the defrosting heater in the cooler 63, and the temperature of the cooler 63 are detected to complete the defrosting. A lead wire such as a defrosting thermistor for measuring the timing is passed through the insertion space 45 and then drawn out from another insertion hole 46D.

When the assembly of the cooler 63 and the like to the lower case 31 is completed, the upper case 50 is put on the upper surface of the lower case 31. Specifically, as shown in FIG. 3, when the sealing groove 56 is fitted on the protrusion 38 from the position just above the lower case 31 and covered with the dividing surfaces 55 and 37 so as to match each other, FIG. As shown, a cooler chamber 30 having a rectangular box shape is assembled. In addition, the upper and lower insertion holes 43U and 43D are aligned to form the insertion hole 43, and the upper and lower two insertion holes 46U and 46D are aligned to form the two insertion holes 46. The drain pipe 61 and the refrigerant pipe 26 and the lead wires protrude from the insertion holes 46 and 46D.
Subsequently, the pair of left and right fastening bands 70 are fitted over the corners of the three edges of the upper edge and the front and rear edges on the left and right side surfaces of the cooler chamber 30, and the front and rear mounting plates 72 are fixed on the unit base 16 with screws. . As a result, the dividing surface 55 of the upper case 50 is firmly pressed against the dividing surface 37 of the lower case 31 so that the seal is taken. Further, the top wall 51 of the upper case 50 presses the upper surfaces of the cooler 63 and the cooling fan 66 and holds them firmly in the cooler chamber 30.

Finally, the electrical equipment box 25 is installed and predetermined wiring connections are made.
When the cooling unit 15 is assembled in this way, the handle 18 is held and placed at a predetermined position on the top surface 10A of the refrigerator main body 10, and the mounting plate 17 is fixed by screwing. At this time, the suction port 48 and the air outlet 49 provided in the bottom wall 32 of the lower case 31 in the cooler chamber 30 are in a state of communicating with the storage chamber through the through hole.

  The cooling operation is performed by driving the refrigeration apparatus 20 (the compressor 21 and the condenser fan 23) and the cooling fan 66, and the internal air is sucked into the cooler chamber 30 from the suction port 48, Cooling air is generated by heat exchange while passing through the cooler 63, and circulation is performed such that the cold air is blown out from the outlet 49 to the storage chamber, whereby the storage chamber is cooled. During this time, the internal temperature is detected by the internal thermistor, and on / off of the refrigeration apparatus 20 and the cooling fan 66 is controlled depending on whether the detected temperature is higher or lower than a preset temperature. The set temperature is maintained.

  Further, the defrosting operation is performed with an appropriate time interval. For example, the defrost heater installed in the cooler 63 is energized to heat the cooler 63 to melt attached frost, and the defrost water is dripped onto the drain pan 60 disposed below the defrost water. The dropped defrost water is drained from the drain pipe 61 to a predetermined drainage place through a drain hose (not shown) connected thereto. When the temperature of the cooler 63 detected by the defrosting thermistor rises above a predetermined level, it is considered that the icing has disappeared, and energization to the defrosting heater is stopped, that is, the defrosting operation is stopped and the cooling operation is resumed. The

  When it is necessary to open the cooler chamber 30 for maintenance or the like, the following is performed. First, the screws are loosened, and the left and right fastening bands 70 are removed. Subsequently, as shown in FIG. 12, the upper case 50 is lifted until the seal groove 56 comes off the protrusion 38. After that, the upper case 50 can be removed by pulling it forward. Therefore, even if the upper surface of the cooler chamber 30 is close to the ceiling surface X of the room due to the installation location, the distance between the upper surface of the upper case 50 of the cooler chamber 30 and the ceiling surface X in the mounted state. If L is larger than the height of the ridge 38, the upper case 50 can be removed.

When the upper case 50 is removed, in addition to the upper surface of the cooler chamber 30, the area from the front surface to the back side of the left and right side surfaces is close to 2/3. Therefore, in the same state, the cooler 63, the cooling fan 66, the capillary tube 64, etc. can be repaired or replaced, and the periphery of the cooler 63 can be cleaned. In particular, since the left side surface is wide open, the screw can be attached and detached by the driver to remove the cooling fan 66, and the cooling fan 66 itself can be taken in and out easily.
When reassembling the upper case 50, the upper case 50 is inserted from the front to the position directly above the lower case 31, and then covered with the split grooves 55 and 37 while fitting the seal groove 56 to the protrusion 38. . After that, the upper and lower cases 50 and 31 may be fastened with a pair of left and right fastening bands 70.

As described above, according to the present embodiment, the split surfaces 55 and 37 of the upper and lower cases 50 and 31 are the inclined surfaces 55B and 37B that are inclined downward toward the front side on the back side, and the front side is a horizontal plane. Since it is formed as 55C and 37C, when removing the upper case 50, it can be removed by lifting the upper case 50 until the ridge 38 comes out of the seal groove 56 and then pulling it forward. Therefore, even if there is not enough space above the cooler chamber 30, if there is a space for the height of the minimum protrusions 38, the cooler unit 30 and the cooler 15 are not lowered to the floor etc. The interior of the chamber 30 can be opened, and maintenance work and the like can be performed efficiently in a short time.
In addition, maintenance work and the like can be done in a short time, so that the temperature rise in the storage chamber can be minimized, and it is not necessary to prepare dry ice or the like separately. In addition, once the cooling unit 15 is lowered to the floor or the like, there is a case where the function of the refrigeration apparatus 20 or the like becomes defective when the cooling unit 15 is installed again. Such a problem does not occur, and therefore there is no risk of increasing the burden on service personnel.

  In order to take a seal between the split surfaces 55 and 37 in the upper and lower cases 50 and 31, the protrusions 38 provided on the split surface 37 of the lower case 31 are fitted into the seal grooves 56 of the split surface 55 of the upper case 50, In addition, the upper and lower cases 50 and 31 are fastened by the fastening band 70. With this tightening, in the horizontal planes 55A, 37A and 55C, 37C, the dividing surface 55 of the upper case 50 presses the dividing surface 37 of the lower case 31 vertically, and the inclined surfaces 55B, 37B are also fastened as shown in FIG. Since the dividing surface 55 of the upper case 50 presses the dividing surface 37 of the lower case 31 vertically by the component force Fa of the force F, the space between the upper and lower dividing surfaces 55 and 37 is firmly sealed.

<Related technologies>
13 and 14 show related techniques of the present invention. In this related technique, the shape of the fastening band 80 is changed.
The fastening band 80 is formed in a gate shape in the same manner as in the above embodiment, but only the upper edge 81A is formed of an angle material, and the front and rear edges 81B and 81C are formed of a flat plate. 81B and 81C can be elastically bent.
In fastening the upper and lower cases 50, 31, the pair of left and right fastening bands 80 has an upper edge 81A fitted into corners of the upper edge on the left and right side surfaces of the cooler chamber 30, and both front and rear edges 81B, 81C. Is applied to the front or rear end, and the lower mounting plate 82 is screwed onto the unit base 16.

  When the upper case 50 is removed due to maintenance or the like, only the screws that fasten the front mounting plates 82 of both fastening bands 80 are removed, and the rear mounting plates 82 are left screwed. In order to remove the upper case 50, as shown in FIG. 14, the upper case 50 is lifted by a predetermined size while the rear edge 81C of both fastening bands 80 is elastically bent and deformed, and then pulled forward. Can do. Similarly, the upper case 50 may be pushed from the front and covered with the lower case 31 so as to be hidden under the front edge 81B while elastically deforming the rear edge 81C side. .

  In the above-described embodiment, to attach and detach the fastening band 70 to remove the upper case 50, it is necessary to attach and detach the screws at a total of four places, two places before and after each fastening band 70. The upper case 50 can be inserted and removed while elastically deforming the rear edge 81 </ b> C of the band 80, and the time for shortening the time can be reduced because the screw attachment / removal work is completed only at a total of two locations on the front side of each fastening band 80. . Further, since the front and rear edges 81B and 81C of the fastening band 80 are changed from the angle material to the flat plate, the fastening band 80 itself is lightened, and thus the weight of the cooling unit 15 is reduced.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
(1) The form of the dividing surface is not limited to that exemplified in the above-described embodiment, is the inclined surface of the front falling over the entire length in the depth direction, whether the back side is a horizontal surface and the front side is an inclined surface of front falling, Furthermore, it may be a form in which a horizontal plane is continuously provided from the upper and lower ends toward the back side and the near side, in the middle of the depth, with an inclined surface that falls forward.
(2) Contrary to the above embodiment, the protrusion may be provided on the dividing surface of the upper case, and the seal groove may be provided on the dividing surface of the lower case.

(3) Further, the dividing surface may be a flat surface on which no protrusion or seal groove is formed, and such a surface is also included in the technical scope of the present invention.
(4) The shape of the binding band is not limited to that illustrated in the above-described embodiment, and it is only necessary that the upper and lower cases can be fastened in the vertical direction. In addition, the fastening band may not necessarily be provided if a suitable sealing property can be secured between the two divided surfaces.
(5) The present invention can be similarly applied to a case where the cooler chamber is attached separately from the refrigeration apparatus, that is, a unit which is not unitized.

The external appearance perspective view of the refrigerator which concerns on one Embodiment of this invention The exploded perspective view seen from the front side of the cooling unit The exploded perspective view seen from the diagonal side A perspective view of the cooler chamber as viewed obliquely from the front The perspective view seen from the diagonally back Perspective view of lower case Perspective view of upper case An inverted perspective view Side view of cooler room Perspective view of cable ties Perspective view of cooling unit Side view showing the action of removing the upper case Disassembled perspective view of cooling unit according to related technology The perspective view which shows the operation | movement which removes the upper case

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Refrigerator main body (storage main body) 10A ... Top surface (of refrigerator main body 10) 15 ... Cooling unit 16 ... Unit base 30 ... Cooler room 31 ... Lower case 37 ... Dividing surface 37A, 37C ... Horizontal surface 37B ... Inclined surface 38 ... Projection 50 ... Upper case 55 ... Dividing surface 55A, 55C ... Horizontal surface 55B ... Inclined surface 56 ... Seal groove

Claims (2)

In the top surface of the storage body, in which a cooler room made of heat insulating material containing a cooler is installed,
The cooler chamber is divided into a lower case and an upper case that is attached to the upper surface thereof, and the divided surfaces of both cases are formed by inclined surfaces that are downwardly inclined from the back side toward the near side, Alternatively, the cooling storage room is characterized by being formed by connecting a horizontal plane to at least one of upper and lower ends of an inclined surface having a downward slope from the back side toward the front side. 2. The cooling according to claim 1, wherein a protrusion is formed on one of the dividing surfaces of the lower case and the upper case, and a seal groove is formed on the other to closely fit the protrusion. Storage.

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