JPH09243227A - Cooling storage chamber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To satisfactorily discharge defrosting drain from a blowoff duct, and also effectually prevent a short cycle. SOLUTION: A blowoff duct 71 is disposed corresponding to an in-chamber fan 30 on an upper end of a partition plate 63 for partitioning a space between a refrigerator chamber 2 and a cooling chamber 9. A guide plate 72 disposed on a bottom surface of the blowoff duct 71 and raised as it goes to its tip end is inserted into a concave part 61 at its rear end leaving only a slight gap in the concave part, the concave part being protruded from a rear edge of a side plate 73 and provided on the front surface of a cooler 27. During cooling operation air sucked into the cooling chamber 9 is prevented from going around the side of the blowoff duct 71 by being obscured by a protruded portion 72a to the rear of the guide plate 72. Upon defrosting operation defrosted drain from the duel 71 flows down along the guide plate 72 and drops down passing through a gap between the guide plate 72 and the recessed part 61, and is discharged from an outfall 82 together with defrosted drain from the condenser 27.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a cold store,
In particular, the present invention relates to the improvement of the structure of the cold air circulation supply section.

[0002]

2. Description of the Related Art Heretofore, in order to facilitate the assembly and maintenance of a cooling unit, there has been proposed a refrigerator in which the entire unit can be pulled out, and, for example, a practical refrigerator.
The one described in No. 846 is known. This is Figure 9
As shown in, a structure is provided in which a cooling chamber 92 for storing a cooler 91 is provided in an upper part of a refrigerating chamber 90 for storing stored items, and a storage space 93 is provided on the lower surface side thereof. As the condensing unit that is integrally assembled with the cooler 91 and constitutes a cooling cycle is inserted into the storage space 93 from the front side, the cooler 91 is insertably drawn into the cooling chamber 92. is there.

On the other hand, in the internal structure for circulating cold air to the refrigerating chamber 90, an intake port 95 is opened on the lower side of a partition plate 94 provided to partition the refrigerating chamber 90 and the cooling chamber 92, and cooling is performed. Blow-out port 96 provided on the upper front surface of the container 91
A blowout duct 98 provided with an internal fan 97 is provided so as to extend in front of the partition plate 94 and the ceiling surface of the cooling chamber 92. In addition, the duct 9 in the partition plate 94
A baffle plate 99 is stretched in an oblique posture between a position directly below the mounting position of 8 and the lower part of the front surface of the cooler 91. Baffle plate 99
A guide rail 100 is formed at the lower end of the cooler 91.
The cooler 91 is housed in the cooling chamber 92 as described above so that it can be pulled out while the guide groove 101 provided in the lower part of the front surface of the cooler is fitted and guided by the guide rail 100. When the cooling operation is performed, the air in the refrigerating chamber 90 is sucked through the intake port 95 from the intake 102 on the lower surface side of the cooler 91 to be converted into cool air, and then the duct 98 is blown by the internal fan 97. The air is blown out to the ceiling side of the refrigerating compartment 90 through which the cold air is circulated and supplied to the refrigerating compartment 90.

[0004]

By the way, in such a refrigerator, the defrosting operation is appropriately performed, and the defrosting drainage from the cooler 91 is dropped on the bottom surface of the cooling chamber 92 and then discharged to the outside from the drainage port. It At that time, the duct 98 is also defrosted, and the defrost drainage flows down along the baffle plate 99. However,
At the lower end of the baffle plate 99, the guide rail 100 and the guide groove 101 are fitted together and in a so-called closed state.
The defrosting drainage that has flowed down may collect and freeze when the cooling operation is subsequently started. Then, when pulling out the cooling unit for maintenance or the like, there is a problem.

However, if the baffle plate 99 is removed,
Defrosting drainage from the duct 98 flows along the partition plate 94, and there is a possibility that it will enter the refrigerating chamber 90 through the intake port 95. Further, during the cooling operation, the air in the refrigerator sucked from the intake port 95 is blown out from the blowout duct 98 as it is without passing through the cooler 91, or the cool air emitted from the blowout port 96 is directed to the intake port 102 side. This results in a so-called short cycle such as turning around. The present invention has been completed in view of the above points, and an object of the present invention is to provide a cooling storage that can satisfactorily discharge defrost drainage from an outlet duct and that can also effectively prevent short cycles. And

[0006]

As a means for achieving the above object, the invention of claim 1 is characterized in that a cooling chamber for accommodating a cooler is provided at a side of a storage chamber for accommodating stored items with a partition plate. The inside air is introduced into the cooler through the intake port opened in the partition plate, and the cold air after heat exchange is performed by the outlet duct connected to the upper end of the partition plate in the storage chamber. In the cooling storage that is blown out toward the side, the blow-out duct is characterized in that its rear end has a downward slope and is formed so as to project toward the cooling chamber side with respect to the partition plate. According to a second aspect of the present invention, in the first aspect of the invention, the rear end of the blowout duct is provided close to the cooler to such an extent that only defrosting drainage flowing down the drainage duct can leave a gap. There is a feature in that.

[0007]

Function and Effect of the Invention

<Invention of Claim 1> During the defrosting operation, the defrosting drainage from the blowing duct flows down along the portion of the duct projecting into the cooling chamber, and does not reach from the edge to the partition plate, and the bottom side of the cooling chamber. Is dropped on. Defrosting drainage from the duct will not flow into the storage chamber from the inlet of the partition plate. On the other hand, during the cooling operation, the in-compartment air sucked from the intake port is blocked by the protruding portion of the blowout duct, and is prevented from flowing around to the duct side. That is, the defrosting drainage of the duct can be drained normally, and a short cycle is prevented from occurring during the cooling operation, so that the cooling efficiency can be improved. Moreover,
Since it is a simple structure just extending the rear end of the duct,
There is an effect that it can be handled at low cost. <Invention of Claim 2> Similar to the above, the defrosting drainage of the duct can be drained properly, and the rear end of the blowout duct is arranged very close to the cooler, so that The wraparound to the duct side is more reliably prevented, and the cooling efficiency can be further enhanced.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to FIG. 1 to 3, reference numeral 1 is a main body of a refrigerator, which is formed in a horizontally long box shape having an opening on a front surface, and a refrigerating chamber 2 for storing foodstuffs x therein is configured (see FIG. 5). . A double door-type door 3 is provided in the front opening, and is supported by legs 4 provided at four corners of the bottom surface.

A cooling unit 6 is removably housed on the left side of the main body 1 when viewed from the front. Specifically, a rectangular parallelepiped bulging portion 8 is formed on the upper side of the left side portion of the main body 1 so as to protrude outward and to be retracted from the front surface of the main body 1 by a predetermined depth. The inside is a cooling chamber 9. This bulge 8
As shown in FIG. 5, a heat insulating material 7 is filled into the inside of the wall surface constituting the main body 1 including the above, and heat insulation to the outside is secured. An entrance 10 is formed in a front wall of the cooling chamber 9, and a storage space 11 is formed on a lower surface side of the cooling chamber 9. The compressor 20 is formed by the storage space 11 and the cooling chamber 9. The cooling unit 6 including the cooler 23, the cooler (evaporator) 27, and the like is housed in a freely drawable manner.

In the storage space 11, one side edge of a shallow tray-shaped receiving plate 13 is fixed to the lower edge of the side surface of the main body 1. Further, a pair of support frames 14 are attached to the front and rear ends of the lower edge of the side surface of the bulging portion 8 so as to hang down, and the other side edge of the receiving plate 13 is fixed to the lower end of each support frame 14, Thus, the receiving plate 13 is supported. The substrate 15 of the cooling unit 6 can be placed on the receiving plate 13. The board 15 is formed in a U-shape in which both right and left edges are bent, and is pushed into the receiving plate 13 from the front, and is provided on a front edge (the right side in FIG. 3) of the board 15. The plate 17 is the receiving plate 13
Screw receiving piece 1 formed at the center of the front edge of
8 stops the pushing, and the abutment plate 17
And the screw receiving piece 18 are fixed by screwing.

The cooling unit 6 is divided into a portion to be stored in the storage space 11 and a portion to be stored in the cooling chamber 9, and these are arranged vertically on the substrate 15 in a stacked manner. As a part to be stored in the storage space 11, a compressor 20 is provided on the back side, and a motor 22 is provided on the front side.
Fan 21 driven by the condenser, the condenser 2 at the front side
3 are arranged respectively. On the upper surface of the condenser 23, a cooling chamber lid 25 for closing the entrance 10 of the cooling chamber 9 is fixed via an L-shaped bracket 26. A cooler 27 that can be inserted into and removed from the cooling chamber 9 is attached to the back side of the cooling chamber lid 25 via a bracket 28.

The cooler 27 is housed and provided in a casing 27a, and as shown in FIG.
The bottom of 7a and the upper part of the surface on the side of the refrigerating chamber 2 are open, and the air intake 29 and the air outlet 3 are respectively provided.
The internal fan 31 is attached to the front of the air outlet 30. Further, as shown in FIG. 4, as a defrosting means, a glass tube heater 58 is provided inside a cover 59 at a lower position of the surface of the cooler 27 on the refrigerating chamber 2 side. The cover 59 is provided with an in-compartment thermostat 60 which is used to detect the in-compartment temperature and control when the defrosting operation ends. Further, on the surface of the cooler 27 on the refrigerating chamber 2 side, a concave portion 61 into which a rear end of a guide plate 72 of a blow-out duct 71 to be described later fits is inserted in a central height portion thereof.
Are formed (see FIG. 5).

As shown in FIG. 3, the outlet of the compressor 20 and the inlet of the condenser 23 are connected by a pipe 33, and the condenser 23
And the inlet of the cooler 27 are connected by a pipe 34,
Further, the outlet of the cooler 27 and the inlet of the compressor 20 are connected to the pipe 3
They are connected at 5, which constitutes a cooling cycle. Among the above-mentioned pipes, the pipes 34 and 35 which are put into and taken out of the cooler 27 are encased together in the middle and are covered with a heat insulating material tube, and are drawn out from the left edge portion of the cooling chamber lid 25 to the side. Have been. The portions of the two pipes 34, 35 that are drawn out from the cooling chamber lid 25 are semi-circular holders 3.
While being fixed by 7, a concave portion 38 into which the above-mentioned pressing tool 37 is fitted is formed at the side edge of the inlet / outlet 10 of the cooling chamber 9.

A heat-insulating packing 39 including the above-mentioned recess 38 is attached to the front wall of the cooling chamber 9 at the peripheral edge of the inlet / outlet 10. A pair of mounting bolts 41 project from both upper and lower edges of the front wall, while the cooling chamber lid 25 is provided with insertion holes 42 for the mounting bolts 41. Cooling chamber lid 25
An electrical box 43 is attached to the front side of the electronic component. Then, as described above, the cooling unit 6 connects the substrate 15 to the receiving plate 1.
3 and the cooler 27 is
0 and is inserted into the cooling chamber 9. During the pushing, the mounting bolt 41 is inserted through the insertion hole 42 of the cooling chamber lid 25 and is pushed to a predetermined position.
The cooling chamber lid 25 abuts against the front wall of the cooling chamber 9 via the heat insulating packing 39 while the cooling chamber lid 2
When a nut (not shown) is screwed into the projecting end of the mounting bolt 41 penetrating through the nut 5 and tightened, the cooling chamber lid 25 closes the entrance 10 of the cooling chamber 9 in an airtight manner. The substrate 15 is fixed to the receiving plate 13 in the same manner as described above.
Is stored in the cooling chamber 9, while the compressor 20, the condenser fan 21 and the condenser 23 are stored in the storage space 11.

Further, regarding the internal structure, FIG. 5 to FIG.
It will be explained by. A partition plate 63 is stretched between the refrigerating chamber 2 and the cooling chamber 9. The partition plate 63 is stretched so as to stand up from the side wall 1a of the main body 1 which partitions the storage space 11 from the storage space 11.
A notch 64 for forming a cool air blowout duct 71, which will be described later, is formed, and a rectangular window hole 65 is opened in the substantially central portion. The window hole 65 is provided at a height corresponding to the intake port 29 of the stored cooler 27.

A cover 6 is provided on the surface of the partition plate 63 on the refrigerating compartment 2 side.
7 is attached. This cover 67 has side plates 67a stretched on the upper edge and both left and right edges, and the lower edge side is open. By screwing a flange 67b provided on each side plate 67a, the window hole 65 and the lower part thereof are closed. It is attached so as to cover over the area. On the surface of the cover 67, a plurality of long-hole-shaped intake ports 68 are vertically arranged.
A plurality of intake ports 68 are formed in each of the left and right side plates 67a while being arranged in a row and open over the entire width. The surface of the cover 67 has four protrusions 6 shown in the figure.
9 is formed, the foodstuff x is placed on the shelf net 70 or the like and stored in the refrigerating compartment 2, and when the foodstuff x approaches the cover 67 side as shown in FIG.
A gap is secured between the front and the front.

As shown in FIG. 7, the blow-out duct 71 is composed of a guide plate 72, a pair of side plates 73, and two reinforcing members 74. As shown in FIG. 5, when the upper edge of the side plate 73 is in a horizontal posture, the lower edge is an inclined edge having a downward slope from the front end (the refrigerating compartment 2 side) toward the rear end. This inclination angle is preferably about 45 degrees.
An upper flange 76 bent outward at a right angle is formed on the upper edge of each side plate 73. The upper flange 76 is for mounting on the ceiling surface, and a screw insertion hole 77 is formed.
On the other hand, the lower edge of each side plate 73 is formed with a lower flange 78 that is bent inward at a right angle, and functions as an attachment for the guide plate 72. The guide plate 72 is formed in a rectangular shape having a length longer than the lower edge of the side plate 73 by a predetermined dimension and a width larger than the width of the internal fan 31.

A pair of side plates 73 are arranged on the front side edges of the guide plate 72 so as to be received by the lower flange 78, and the side edges of the guide plate 72 are fixed to the lower flange 78 by spot welding or the like. The rear end of the guide plate 72 projects obliquely below the rear edge of the side plate 73. The reinforcing member 74 has a length substantially equal to the width of the guide plate 72, and has mounting portions 79 bent upward at right angles at both ends. Both the reinforcing members 74 are fitted vertically between the front ends of the side plates 73, and similarly fixed by spot welding or the like. As a result, a louver-shaped outlet port 80 is formed at the front end of the outlet duct 71.

The blowout duct 71 integrally assembled as shown in FIG. 7 is fitted in the cutout portion 64 provided on the ceiling side of the partition plate 63 with the blowout port 80 facing the refrigerating chamber 2 side. The upper flanges 76 of the side plates 73 are fixed to the ceiling surface by screws. When the outlet duct 71 is attached to the regular position, the rear edge of the side plate 73 (the edge portion on the cooling chamber 9 side) is stored when the cooler 27 is housed in the cooling chamber 9, as shown in FIG. To the extent that it does not interfere with the inner fan 31,
It is set to come just before that. In addition, the guide plate 7
The rearwardly projecting portion 72a of 2 is fitted into the concave portion 61 of the cooler 27 housed in the cooling chamber 9 so that a gap of about 5 mm is opened between the concave portion 61 and the inner surface of the concave portion 61. .

A drain port 82 is provided on the bottom surface of the cooling chamber 9 on the back side. The drain pipe 83 connected to the drain port 82 is connected to the upper end of the drain pipe 85 embedded in the side wall 1 a of the main body 1, and the lower end of the drain pipe 85 projects downward from the bottom surface as a final drain port 86. Is provided.

As shown in FIG. 8, a top plate 49 is stretched on the upper surface of the main body 1 including the bulging portion 8. Further, outside the support frame 14, a side panel 50 is stretched so as to cover the cooling chamber 9 and the storage space 11 laterally, and a rear panel 51 is stretched on the rear surface side. Further, a front panel 52 is mounted on the front side of the cooling chamber 9 and the storage space 11 via a hinge 53 so that the front panel 52 can swing and open and close. A plurality of outside air intake ports 55 are opened on the lower side of the front panel 52, and an exhaust port is provided on a portion corresponding to the space between the side wall of the cooling chamber 9 and the side panel 50 on the upper side. 56 is formed. Further, exhaust ports 56 are also formed in the side panel 50 and the rear panel 51. Therefore, during the cooling operation, by driving the condenser fan 21, the outside air is removed from the front panel 5 as shown by the arrow in FIG.
The warm exhaust gas that has been sucked into the storage space 11 through the second intake port 55, has cooled the condenser 23 and has undergone heat exchange, is exhausted to the outside through the exhaust ports 56 described above.

This embodiment has the above-described structure,
Subsequently, the operation will be described. When the cooling unit 6 is inserted from the front side and the cooler 27 is properly housed in the cooling chamber 9, the internal fan 31 integrally provided in the cooler 27 blows out as shown in FIG. Corresponding to just behind the duct 71, the rearward projecting portion 72a of the guide plate 72 is the recess 6
It is in a state of being fitted with a slight gap left inside 1. When the cooling operation is performed in this state, the air in the refrigerator compartment 2 is driven by the fan 31 in the refrigerator, and the air in the refrigerating compartment 2 passes through the window hole 65 of the partition plate 63 from the lower surface of the cooler 27. After being sucked from the inlet 29 on the side and converted into cool air, it is blown from the internal fan 31 into the blowout duct 71 and blown from the blowout port 80 toward the ceiling surface side of the refrigerating compartment 2, that is, the refrigerating compartment 2 Cold air is circulated and supplied to.

At this time, the rearward projecting portion 72a of the guide plate 72 of the blowout duct 71 has deeply entered into the concave portion 61 provided on the front surface of the cooler 27, so that it is sucked into the cooling chamber 9. It is possible to prevent the inside air from being obstructed by the protruding portion 72a of the guide plate 72 and flowing around to the outlet duct 71 side, that is, from causing a short cycle, so that the inside of the refrigerating chamber 2 can be efficiently cooled.

On the other hand, when the defrosting operation is performed, the heater 58 provided in the cooler 27 generates heat, and the defrost drainage drops from the cooler 27 toward the drainage port 82 on the bottom surface of the cooling chamber 9.
At the same time, the frost adhering to the blowout duct 71 is also melted, and the drainage thereof flows down along the guide plate 72. And
It drops from the tip of the projecting portion 72a of the guide plate 72 through the gap, hits the cover 59 of the heater 58, etc., and then drops onto the bottom surface of the cooling chamber 9. The drainage that has traveled along the lower surface of the guide plate 72 also drops from the tip of the protruding portion 72a. Then, together with the defrost drainage of the cooler 27, it becomes possible to drain to the outside from the drainage port 82 through the pipe 83, the drainage pipe 85 in the side wall 1a, and the drainage port 86 on the bottom surface of the main body 1. .

As described above, according to the present embodiment, the defrost drainage generated in the blowout duct 71 flows down the guide plate 72 and is then reliably discharged to the outside together with the defrost drainage of the cooler 27. Further, during the cooling operation, the protruding portion 72 of the guide plate 72
It is possible to effectively prevent the air a sucked into the cooling chamber 9 from going around to the outlet duct 71 side as it is, that is, to cause a short cycle, and to cool efficiently. Further, the blowout duct 71 itself has a simple structure, and since it is integrated, it can be easily attached, so that it can be manufactured at low cost. Further, the blow-out duct 71 is not in contact with the cooler 27, so that the blow-out duct 71 or the like does not generate a cracking sound due to the vibration of the cooler 27.

<Other Embodiments> The present invention is not limited to the embodiments described above with reference to the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition, various changes can be made without departing from the scope of the invention. (1) The present invention is not limited to the pull-out type cooling unit, and is similarly applied to a cooling storage of a type in which a cooler is fixedly provided in a cooling chamber provided on the side of the refrigerating chamber. be able to.

[Brief description of drawings]

FIG. 1 is a front view of a refrigerator according to an embodiment of the present invention.

FIG. 2 is a side view thereof.

FIG. 3 is a perspective view of a state before a cooling unit is housed.

FIG. 4 is a perspective view of the cooling unit as viewed from the back side.

FIG. 5 is an enlarged cross-sectional view showing the structure of the cooling chamber as seen from the back side.

FIG. 6 is a sectional view taken along line AA of FIG. 1;

FIG. 7 is a perspective view of an outlet duct.

FIG. 8 is a partially cutaway perspective view showing the flow of warm exhaust air.

FIG. 9 is a sectional view of a conventional example.

[Explanation of symbols]

2 ... Refrigerating room 9 ... Cooling room 27 ... Cooler 31 ... Internal fan 61 ... Recessed portion 63 ... Partition plate 65 ... Window hole 68 ...
Intake port 71 ... Outlet duct 72 ... Guide plate 72a ...
Projected portion (of guide plate 72) 73 ... Side plate 82 ... Drainage port x ... Food material

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroyuki Ibada 16-16 Hoshizaki Electric Co., Ltd. 3-3 South Building, Sakaemachi, Toyoake City, Aichi Prefecture

Claims (2)

[Claims] 1. A cooling chamber, in which a cooler is stored, is provided on the side of a storage chamber in which stored items are stored, through a partition plate, and the air in the chamber is cooled through an intake port opened in the partition plate. The cool air after being introduced into the container and having undergone heat exchange is blown out toward the storage chamber by a blowout duct that is continuously provided at the upper end of the partition plate, in which the blowout duct has a rear end. Is a downward slope and is formed so as to project toward the cooling chamber side with respect to the partition plate. 2. The rear end of the blowout duct is provided in the vicinity of the cooler to such an extent that only defrosting drainage flowing down therethrough leaves a gap in which it can be dripped. Cold storage.