JPH09243232A - Cooling storage chamber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To close a cooling chamber cover so that an opening in a cooling chamber is correctly positioned, and easily confirm sealability of a delivery port of refrigerant piping. SOLUTION: Refrigerant piping 34, 35 connected to a cooler is taken out from a side edge of the back surface of a cooling chamber cover 25 in the state thereof where it is parallely enclosed with a heat insulating tube 37, and is connected to the side of a condensation unit 24. A portion of the heat insulating tube 37 which is taken out is fixed to a press plate 39 having a U shaped press part 40. In an edge of a delivery port 10 of a cooling chamber 9 an engagement recessed part 46 is provided to and with which the press part 40 is matched and is engageable. For the cooling chamber cover 25 the press plate 39 is engaged with the engagemenrt recessed part 46 and is closed, and vertical positioning of the cooling chamber cover 25 is correctly achieved owing to the engagement between the press part and the recessed part. Fixing work of the cooling chamber cover 25 is quickly achieved. Since the present apparatus is constituted so that the insulation tube 37 is taken out to the opened side surface side of the cooling chamber 9, the sealability of the delivery port is easily confirmed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling storage in which a cooling unit is stored in a drawer type.

[0002]

2. Description of the Related Art Heretofore, a refrigerator has been proposed in which the entire unit can be pulled out from the front side of a housing in order to facilitate the assembly and maintenance of the cooling unit. As one example thereof, the one described in Japanese Utility Model Application Laid-Open No. 7-35972 is filed by the present applicant. This will be briefly described with reference to FIG. A refrigerating chamber is formed in the main body 70 of the refrigerator, a plurality of drawer-type refrigerating boxes 71 are accommodated therein, and a cooling chamber 72 is formed so as to project above one side surface of the main body 70.
The front wall 73 of the cooling chamber 72 is formed with an opening 74 serving as a doorway, and a storage space 75 is provided on the lower surface side.
One cooling unit 76 includes a condenser 78 on a substrate 77,
A compressor 79 or the like (condensing unit 86) is placed, and a cooling chamber lid 80 that closes the opening 74 of the cooling chamber 72 is erected on the upper surface of the condenser 78 via a bracket 81, and cooling is performed on the rear surface side thereof. A container 82 is provided. A refrigerant pipe 87 that circulates a refrigerant in the cooler 82 penetrates the cooling chamber lid 80 while being covered with a heat insulating material tube, and is connected to the condenser 78 and the compressor 79.

The cooling unit 76 is inserted into the cooling chamber 72 through the opening 74 and the cooling chamber lid 80 is pushed into the cooling chamber 72 while the condenser unit 86 side is stored in the storage space 75 until the cooling chamber cover 80 hits the edge of the opening 74. At this point, the bolts 84 are passed through the insertion holes 83 formed in the upper and lower edges of the cooling chamber lid 80, and the nuts 85 embedded in the upper and lower rims of the opening 74 are screwed and tightened. 80
Is fixed to the front wall 73 with the opening 74 closed.

[0004]

By the way, the cooling chamber 72
The nut 85 provided on the edge of the opening 74 and the insertion hole 83 of the bolt 84 provided on the cooling chamber lid 80 are aligned with each other when the cooling chamber lid 80 hits the edge of the opening 74. However, due to the stacking of manufacturing and mounting tolerances of parts, their positions may shift.
Therefore, the cooling chamber cover 80 is set to be temporarily fixed on the condenser 78, the entire unit 76 is stored in the temporarily fixed state, and then the cooling chamber cover 80 is first aligned to open the opening 74.
It is fixed to the rim of the container and then fixed to the condenser 78.

However, when the cooling chamber lid 80 is aligned, the nut 85 is located in the cooling chamber lid 80.
Since it is hidden behind the back side, it is difficult to perform the visual alignment, and it is necessary to insert the bolt 84 into the insertion hole 83 and perform the alignment while confirming whether the nut 85 is properly abutted. They had to do troublesome work, and there was a longing for further improvement. The present invention has been completed based on the above demands, and an object thereof is to enable the cooling chamber lid to be aligned and closed with the opening of the cooling chamber. Another object is to facilitate confirmation of the seal at the portion where the refrigerant pipe is drawn out.

[0006]

As a means for achieving the above object, the invention of claim 1 is such that a cooling chamber for accommodating a cooler is connected to a side of a main body for accommodating stored items. In addition, in the vicinity of the outside of the cooling chamber, there is provided a storage space for the condensing unit that is integrally assembled with the cooler and circulates the refrigerant through the refrigerant pipe in the cooler. When the cooling device is stored in the cooling chamber, the cooling device is stored so as to be drawn out from an opening formed in the wall surface of the cooling chamber, and the opening is closed by a cooling chamber lid provided on the front side of the cooling device. In the cold storage, the refrigerant pipe connected to the cooler,
The cooling chamber lid is pulled out from the side edge on the back side toward the condensation unit side, and the pulled out portion of the refrigerant pipe is pressed and fixed by a pressing plate attached to the back side of the cooling chamber lid, while the cooling chamber It is characterized in that the rim of the opening is provided with a fitting recess into which the pressing plate can be fitted in alignment. In the invention of claim 2, in the invention of claim 1, the refrigerant pipe connected to the cooler is drawn out from a side edge of the back surface side of the cooling chamber lid opposite to the main body. However, it has a feature.

[0007]

Function and Effect of the Invention

<Invention of Claim 1> The operation of the invention of Claim 1 is as follows. The refrigerant pipe is pulled out from the side edge of the back surface of the cooling chamber lid in a state of being fixed by the pressing plate, and when the condenser is pushed into the storage space and the cooler is stored in the cooling chamber from the opening, The cooling chamber lid is closed by abutting the rim of the opening while fitting the protruding portion of the pressing plate into the fitting recess. The fitting of the pressing plate and the fitting recess aligns the cooling chamber cover with the regular position. Therefore, the work of fixing the cooling chamber lid can be performed quickly and accurately.

<Invention of Claim 2> In the invention of Claim 2,
In addition to the above, the inlet and outlet of the refrigerant pipe is provided on the open side surface of the cooling chamber on the side opposite to the main body, that is, it is provided at a location that is easily visible, so when sealing the inlet and outlet, the sealing property Can be easily confirmed.

[0009]

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 therein is configured (see FIG. 4). 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 project from a position retracted inward from the front surface of the main body 1, and the inside thereof serves as a cooling chamber 9. ing. A heat insulating material 7 is filled inside the wall surface of the main body 1 including the bulging portion 8 to ensure heat insulating properties to the outside. A doorway 10 is formed on the front wall of the cooling chamber 9, and a storage space 11 is formed on the lower surface side of the cooling chamber 9. The storage space 11 and the cooling chamber 9 form a condenser 23, a compressor Machine 2
0, a cooling unit 6 including a cooler (evaporator) 27 and the like is housed so as to be freely drawn out.

In the storage space 11, one side edge of a receiving plate 13 having a shallow dish shape 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. This board 15 is formed in a U-shape with both left and right edges bent, and is pushed into the receiving plate 13 from the front side, and a protrusion provided on the front edge of the board 15 (right edge in FIG. 3). The contact 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. These correspond to the condensing unit 24 of the present invention. On the upper surface of the condenser 23, a cooling chamber lid 25 for closing the inlet / outlet 10 of the cooling chamber 9 described above.
Are fixed via an L-shaped bracket 26. The cooling chamber lid 25 has a heat insulating structure. In addition, the above bracket 26
Is temporarily fixed to the cooling chamber lid 25 and the condenser 23 by screws, and after being positioned, it is finally fixed. An electrical equipment box 32 is attached to the front surface side of the cooling chamber lid 25.

On the back side of the cooling chamber lid 25, a cooler 27 that can be inserted into and removed from the cooling chamber 9 is attached via a bracket 28. This cooler 27 is a casing 3
As shown in FIG. 4, the bottom surface of the casing 36 and the upper portion of the surface on the refrigerating compartment 2 side are open, and the air inlet 29 and the air outlet 30 are respectively provided. The inside fan 31 is attached to the front of the air outlet 30.

The piping structure of the cooling unit 6 is as follows. Output port 20b of compressor 20 and condenser 2
The third input port 23a is connected by a pipe 33.
Further, the output port 23b of the condenser 23 and the input port 27a of the cooler 27 are connected by a pipe 34, and the output port 27b of the cooler 27 and the input port 20a of the compressor 20 are connected by a pipe 35, respectively, to form a cooling cycle. Has been done.

Of the above pipes, the pipes 34 and 35 will be described in more detail. Input port 27 of cooler 27
As shown in FIG. 10, a is guided to the lower end side of the left side edge of the back surface side of the cooling chamber lid 25 when viewed from the front side, and one output port 27b is also located immediately below the input port 27a. Have been guided. One end of a pipe 34 for supplying the refrigerant from the condenser 23 is connected by welding to the input port 27a, and a pipe 35 for returning the refrigerant from the cooler 27 to the compressor 20 is connected to the output port 27b. One end is also connected by welding. Both pipes 34, 3
5 are pulled out a little to the left side (front side in FIG. 10) of the cooling chamber lid 25 in a lined state, bent downward as shown in FIG. 3 and then directed to the back side, and one pipe 35 is turned forward. While being bent and connected to the input port 20a of the compressor 20, the other pipe 34 is separated from the pipe 35 from the middle and connected to the output port 23b of the condenser 23. The pipe 35 connected to the output port 27b side of the cooler 27 is covered with a heat insulating material tube 37 over the entire length. The pipe 34 connected to the input port 27a side of the cooler 27 is partly lined up with the pipe 35, so that the lined part is covered with the heat insulating material tube 37 together.
The part separated from the pipe 35 is exposed and connected to the condenser 23.

As shown in FIG. 5, the portion where both pipes 34, 35 are covered with a heat insulating material tube 37 and pulled out to the left side of the cooling chamber lid 25 is covered by a pressing plate 39 as shown in FIG.
It is designed to be fixed to the back surface of 5. The pressing plate 39 is made of a metal having high rigidity, has a width substantially equal to the width of the left side edge of the inlet / outlet 10 of the cooling chamber 9 described above, and forms a U-shaped pressing portion 40. Both ends of the holding portion 40 are bent at right angles to the outside so that the mounting portion 4
1 is formed. The heat insulating material tube 37 can be fitted into the holding portion 40, and the mounting portion 41 is formed with an insertion hole 43 for the screw 42. On the back surface of the one cooling chamber lid 25, a pair of upper and lower screw holes 44 are provided at predetermined positions on the lower end portion side of the left side edge of the cooling chamber lid 25.
3 is formed correspondingly. That is, the pressing plate 39
By fitting the heat insulating material tube 37 into the pressing portion 40 of the above, and applying it to the back surface of the cooling chamber lid 25 via the seal member 45, the screw 42 passed through both insertion holes 43 is screwed into the screw hole 44 and tightened. As shown in FIG. 6, the drawn-out portions of both pipes 34, 35 are fixed to the back surface of the cooling chamber lid 25 in a state of being sealed in the pressing plate 39.

At the left edge of the inlet / outlet 10 of the cooling chamber 9, there is formed a U-shaped fitting recess 46 into which the pressing portion 40 of the pressing plate 39 can be aligned and fitted. Further, nuts 48 are embedded in the upper and lower edges of the inlet / outlet 10 of the cooling chamber 9 (see FIG. 7), and bolts 49 screwed into the nut 48 are attached to the upper and lower ends of the cooling chamber lid 25. An insertion hole 50 that can be inserted therethrough is formed in a penetrating shape. Further, a heat insulating packing 52 is attached to the periphery of the entrance / exit 10 of the cooling chamber 9 including the fitting recess 46. However, a hole 53 is formed in the portion where the nut 48 is provided so that the bolt 49 can be inserted therethrough. That is, the cooling chamber lid 25
Is brought into contact with the peripheral edge of the inlet / outlet 10 while fitting the pressing portion 40 of the pressing plate 39 into the fitting recess 46. In that case, the insertion hole 50 of the bolt 49 provided in the cooling chamber lid 25 and the inlet / outlet 1
The nut 48 provided on the 0 side is set to correspond exactly in the vertical direction.

As shown in FIG. 4, a cool air guide plate 55 is provided between the cooling chamber 9 and the refrigerating chamber 2 in the refrigerator. The guide plate 55 is provided so as to extend obliquely forward from a position below the internal fan 31 when the cooler 27 is housed in the cooling chamber 9 to a position slightly below the ceiling surface of the refrigerating chamber 2. Has been. A return plate 56 is provided from the lower surface of the guide plate 55 to a position slightly above the bottom surface of the refrigerating chamber 2. The return plate 56 and the refrigerating chamber 2 are provided.
A predetermined space is provided between the side wall 1a of the main body 1 that separates the storage space 11 from the storage space 11, and a return path 57 that reaches the intake 29 of the cooler 27 is formed therebetween. Therefore, when the cooling unit 6 is driven, as shown by the arrow in FIG. 4, the air in the refrigerating chamber 2 passes through the return path 57 and is sucked from the intake port 29 on the lower surface side of the cooler 27 to cool the air. After being converted, it is blown from the internal fan 31 through the upper surface of the guide plate 55 to the ceiling surface side of the refrigerating compartment 2, that is, cold air is circulated and supplied to the refrigerating compartment 2.

Further, a top plate 59 is stretched on the upper surface of the main body 1 including the bulging portion 8, and the side panel is provided outside the support frame 14 so as to cover the cooling chamber 9 and the storage space 11 laterally. 60 is stretched, and a rear panel 61 is stretched on the rear surface side. Further, a front panel 62 is mounted on the front side of the cooling chamber 9 and the storage space 11 via a hinge 63 so as to be swingable and openable. A plurality of outside air intake ports 65 are opened at the lower side of the front panel 62, and an exhaust port is provided at a portion corresponding to the space between the side wall of the cooling chamber 9 and the side panel 60 at the upper side. 66 is formed. Further, an exhaust port 66 is also formed in the side panel 60 and the rear panel 61. Therefore, during the cooling operation,
By driving the condenser fan 21, the outside air is sucked into the storage space 11 from the intake port 65 of the front panel 62, the condenser 23 is cooled, and the warm exhaust heat-exchanged is exhausted to the outside from the exhaust ports 66 described above. It is supposed to be done.

This embodiment has the above-described structure,
Subsequently, the operation will be described. The cooling unit 6 is the substrate 15
Although it is integrally assembled on the cooling chamber 27, the cooling chamber lid 25 is connected to the input / output ports 27a and 27b of the cooler 27, respectively.
The pipes 34 and 35 that are drawn out to the side of the cooling chamber cover 25 are fixed to the back surface side of the cooling chamber lid 25 by the pressing plate 39 according to the procedure already described in the state of being covered with the heat insulating material tube 37. Repeatingly, the heat insulating material tube 37 is fitted into the holding portion 40 of the holding plate 39, and the cooling chamber lid 25 is inserted via the seal member 45.
The screw 42 passed through both insertion holes 43 is screwed into the screw hole 44 and tightened, and fixed to the back surface of the cooling chamber lid 25 in a state where the drawn-out portions of both pipes 34 and 35 are sealed. To be done. Further, the cooling chamber lid 25 itself is temporarily fixed to the upper surface of the condenser 23 via the bracket 26.

In the cooling unit 6, as shown in FIG. 7, the substrate 15 is placed on the receiving plate 13 and pushed in from the front, the condenser unit 24 side is inserted into the storage space 11, and the cooler 27 is installed. It is inserted into the cooling chamber 9 through the port 10. Near the end of the push,
The holding portion 40 of the holding plate 39 enters the fitting recess 46 on the side edge of the cooling chamber 9. At this time, even if the position of the cooling chamber lid 25 is displaced, the cooling chamber lid 25 is vertically aligned by being guided by the fitting between the U-shaped pressing portion 40 and the fitting recess 46. When the cooling unit 6 is pushed to a predetermined position, the cooling chamber lid 25 is brought into contact with the heat insulating packing 52. In this state, since the vertical alignment of the cooling chamber lid 25 has been completed as described above, the cooling chamber lid 25
Even if there is a shift in the horizontal direction, it is only in the horizontal direction. Therefore, the cooling chamber lid 25 is moved in the horizontal direction while sliding the pressing plate 39 in the fitting recess 46, and the insertion hole 50 of the bolt 49 and the nut. It can be easily corrected to a regular position in which 48 is aligned.

When the cooling chamber lid 25 is closed at the proper position in this way, bolts 49 are inserted into the upper and lower insertion holes 50 of the cooling chamber lid 25 and screwed into the nut 48 to tighten them. As shown in, the cooling chamber lid 25 is pressed against the edge of the inlet / outlet port 10 of the cooling chamber 9 while crushing the heat insulating packing 52, and the inlet / outlet port 10 is airtightly closed. Further, since both pipes 34 and 35 connected to the cooler 27 are also sealed around the pipes and drawn out, the inside of the cooling chamber 9 is kept airtight. After that, the bracket 26 is attached to the cooling chamber lid 25.
And is permanently fixed to the upper surface of the condenser 23, and the substrate 15
Is fixed to the receiving plate 13 of the storage space 11, and the storage operation of the cooling unit 6 is completed.

In this embodiment, the following advantages can be obtained. The holding portion 40 of the holding plate 39 and the fitting recess 4
By fitting with 6, the positioning of the cooling chamber lid 25 in the vertical direction is accurately performed. Therefore, the work of fixing the cooling chamber lid 25 to the cooling chamber 9 can be performed quickly. Especially,
Since the pressing portion 40 of the pressing plate 39 is U-shaped and the protruding portion has a curved surface shape, the curved surface serves as a guide during the fitting with the fitting recess 46, and the cooling chamber lid 25 is aligned. Is done automatically.

Further, since the pressing portion 40 of the pressing plate 39 is formed in a U shape, it fits well with the outer shape of the heat insulating material tube 37, and the heat insulating material tube 37 can be stably held, and Also excellent in stickiness. Since one fitting recess 46 side is also formed in a curved shape such as a U shape, the work of attaching the heat insulating packing 52 can be performed easily and accurately. As a result, the sealing with the pressing plate 39 is accurately performed.

Further, since the inlet / outlet of the heat insulating material tube 37 is provided on the left side surface of the cooling chamber 9, in other words, it is provided at an open and easily visible portion, it is easy to confirm the quality of the seal provided at the inlet / outlet. . Further, since the cooling chamber lid 25 is not provided with the recessed portion, it is possible to avoid a portion of the cooling chamber lid 25 where the heat insulating layer is thinned, and to prevent dew condensation from occurring.

The replacement of the cooler 27 for maintenance is performed as follows. First, the entire cooling unit 6 is pulled out to the outside, the pressing plate 39 is removed as shown in FIG. 10, and then the heat insulating material tube 37 is shifted to the front side as shown by the arrow. Then, the welded portion 58 is exposed. By melting the welded material, the input / output port 27a,
27b is removed from the pipes 34 and 35, and the cooler 27 can be removed. When a new cooler 27 is installed, its input / output ports 27a and 27b are connected to pipes 34 and 3, respectively.
5, the heat insulating material tube 37 may be returned to the original position, and then fixed again by the pressing plate 39. In this way, replacement of the cooler 27 can be easily dealt with.

<Other Embodiments> The present invention is not limited to the embodiments described above and illustrated in 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 seal material provided on the inner side of the pressing plate may be attached over the entire circumference of the heat insulating material tube.

[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 cross-sectional view showing the inside of the refrigerator.

FIG. 5 is an exploded perspective view of a mounting portion of a heat insulating material tube.

FIG. 6 is a sectional view thereof.

FIG. 7 is a side view showing a state in which the cooling unit is being inserted.

FIG. 8 is a side view showing a state where the cooling unit is completely inserted.

FIG. 9 is a sectional view seen from above.

FIG. 10 is a perspective view for explaining a work procedure when replacing the cooler.

FIG. 11 is a perspective view of a conventional example.

[Explanation of symbols]

1 ... Main body 6 ... Cooling unit 9 ... Cooling chamber 10 ... Doorway 11 ... Storage space 24 ... Condensing unit 25 ...
Cooling chamber lid 27 ... Coolers 34, 35 ... Piping (connected to the cooler 27) 37 ... Insulating material tube 39 ... Pressing plate 40 ... Pressing part 46 ... Fitting recess 52 ... Insulating packing

Claims (2)

[Claims] 1. A cooling chamber for accommodating a cooler is continuously provided on a side of a main body for accommodating stored items, and is assembled integrally with the cooler near the outside of the cooling chamber. An opening formed in the wall surface of the cooling chamber of the cooling unit is provided with a storage space for the condensing unit that circulates the refrigerant through the refrigerant pipe in the cooler. In a cooling storage that is stored so that it can be pulled out from the cooling chamber, and the opening is closed by a cooling chamber cover provided on the front side of the cooling device, the refrigerant pipe connected to the cooling device is The part of the refrigerant pipe that is drawn out from the side edge on the back surface side to the condensation unit side is pressed and fixed by a pressing plate attached to the back surface of the cooling chamber lid, while it is attached to the edge of the opening of the cooling chamber. , Cooling storage, wherein said pressing plate is mateable fitting recess is formed in alignment. 2. The cooling refrigerator according to claim 1, wherein the refrigerant pipe connected to the cooler is drawn out from a side edge of the back surface side of the cooling chamber lid opposite to the main body. .