JP2003121066A - Refrigerator and manufacturing method of refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator improving assemblage of a cooler and defrosting components. SOLUTION: A cooling unit 51 comprising the cooler 40 and the defrosting components 49 is attached in an opening part 57 opened in the back surface of an inner box 33 from a side filling a heat insulating material 32 before foaming the heat insulating material 32 to improve the workability and sealing performance in assembling the cooling unit 51.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling unit mounting structure for a refrigerator.

[0002]

2. Description of the Related Art FIG. 12 is a sectional view of a refrigerator having a conventional cooler. As shown in FIG. 8, reference numeral 1 denotes a refrigerator main body, and an inner box 2, an outer box 3 and a foamed heat insulating material 4 constitute a heat insulating box body, and a door 5 forms a storage chamber 6. Reference numeral 7 denotes a cooler, and the cooler 7 is provided with a defrosting temperature detecting sensor. A defrosting heater 8 and a defrosting water drainage water tray 9 are arranged below the cooler 7 to form a cooling unit. Between the inner box 2 and the outer box 3, a suction pipe for sending the refrigerant to the cooler 6, a wire for sending electricity to the defrost sensor and the defrost heater 8 are attached before the foaming of the heat insulating material 2 and the hole of the inner box. Is being discharged from.

In the above structure, the cooler 6 is placed on the convex portion of the inner box 2 after foaming the heat insulating material 4 and brazing it to the suction pipe. The defrost sensor and the defrost heater 8 are also attached after foaming the heat insulating material 4 to bind the wires.

[0004]

However, particularly in the case of a small refrigerator, the space for the cooler storage portion is small, and brazing and wiring work are difficult with the above-described conventional configuration.

According to the present invention, the brazing of the cooler and the suction pipe and the bundling of the electric control device are carried out as a cooling unit, and by attaching from the back of the inner box before foaming, the working process is simplified and the sealing workability is facilitated. It is an object of the present invention to provide a refrigerator having a cooling unit that ensures heat insulation performance.

[0006]

According to a first aspect of the present invention, there is provided an outer box, an inner box, and an insulating box formed by filling a space between the outer box and the inner box with a foam insulating material. In a refrigerator including a body, a storage chamber formed in the heat-insulating box, a cooler for a refrigeration cycle, and defrosting-related parts of the cooler, the cooler and the defrosting-related parts are integrally incorporated. A cooling unit is configured, and the cooling unit is attached from the side where the foamed heat insulating material is filled into the opening of the inner box, which is opened on the rear surface of the storage chamber, and is separately cooled before being incorporated into the refrigerator body. It is possible to assemble the cooler and the defrost-related parts in the narrow space inside the refrigerator, and the assembling accuracy is improved.

According to a second aspect of the present invention, an outer box, an inner box, a heat insulating box body formed by filling a space between the outer box and the inner box with a foam insulating material, and formed in the heat insulating box body. In the refrigerator including the storage chamber, the cooler of the refrigeration cycle, the blower fan for circulating the cool air cooled by the cooler in the storage chamber, and the defrosting-related parts of the cooler, the cooler and the A defrosting-related component and the blower fan are integrally incorporated to form a cooling unit, and the cooling unit is attached to the opening of the inner box on the back surface of the storage chamber from the side where the foamed heat insulating material is filled. The cooler, defrost-related parts, and blower fan can be assembled separately before installing in the refrigerator body, and the cooler, defrost-related parts, and blower fan will be installed in a narrow space inside the refrigerator. Are you free from work? Assembly accuracy is improved.

According to a third aspect of the present invention, in the first or second aspect of the present invention, an inner box having a water receiving tray for receiving defrosting water of a cooler is placed in a lower portion of the inner box opening on the indoor side. The cooling unit is attached to the assembly from the side where the foam insulation is filled.By separately assembling the cooling unit with high assembly accuracy into the refrigerator body, a water pan under the cooler will be installed. Placed with high accuracy.

According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the storage chamber is a freezing chamber, and a cooler or a blower fan incorporated therein is cooled. The element can be used for cooling the interior of the room.

According to a fifth aspect of the invention, in the invention according to any one of the first to fourth aspects, the defrosting-related parts are at least a defrosting heater and a defrosting end detector. This is a feature, and at least a defrost-related component can be integrally assembled by adding at least a defrosting end detector. Furthermore, if a temperature fuse or the like for preventing excessive temperature rise during defrosting is added, the device can be integrally assembled including the safety device.

According to a sixth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the cooling unit has a resin holding member, and the holding member includes a cooler. Defrosting-related parts or coolers, defrosting-related parts, and blower fans are engaged and fixed, and the holding structure can be integrally molded according to the shape of each cooling unit, and can be attached to a holding member. Will be accurate and easy.

According to a seventh aspect of the present invention, in addition to the sixth aspect of the present invention, a water tray for receiving defrosting water of the cooler is integrally formed under the holding member, and the number of parts is reduced. However, the positional relationship with the cooler, the defrost heater, etc. can be kept constant, and the assembly accuracy is improved.

According to an eighth aspect of the present invention, in the invention according to the sixth aspect, the water receiving tray is integrated with the holding member by a resin hinge mechanism. It is possible to reduce the factor of deterioration of the sealing property without having to make the opening larger than necessary.

According to a ninth aspect of the present invention, in the invention according to the sixth or seventh aspect, the defrost heater is provided in a lower portion of the cooler, and the defrost heater is sandwiched between the lower ends of the holding member. Since the members are integrally molded, the number of parts can be reduced and the number of assembling steps can be reduced. Further, the mounting dimensional relationship with the cooler is stable, and the defrosting accuracy is improved.

According to a tenth aspect of the present invention, in the invention according to the sixth or seventh aspect, the holding member is larger than the opening, and the cooling unit engaged with the holding member is smaller than the opening. It can be inserted into the inner box from the side filled with the foamed heat insulating material, so that a seal portion between the holding member and the opening can be secured, and a decrease in inner box strength due to the opening of the inner box can be suppressed.

The invention according to claim 11 is the invention according to claim 6 or 7, wherein the opening of the inner box is closed from the foam heat insulating material filling side by the holding member. Leakage can be prevented.

According to a twelfth aspect of the present invention, in the invention according to the eleventh aspect, the holding member is formed in a substantially U-shape in a plan view with flange portions on both sides in a direction in which the cooler is attached. The flange portion is engaged with the foam heat insulating material filling side of the side surface of the inner box, and can prevent the heat insulating material from leaking into the interior. Further, it is possible to reduce rattling of the holding member.

According to a thirteenth aspect of the present invention, in addition to the twelfth aspect of the present invention, a nipping means for nipping the inner box side ends is formed at the ends of the flange portions at both ends. It is possible to prevent the dew condensation water and food juice that have traveled through the inside from entering the heat insulating material side, and to make the flow path of the heat insulating material from the side surface to the cooler room longer when foaming to prevent the heat insulating material from leaking to the indoor side. it can.

According to a fourteenth aspect of the present invention, in the invention according to the ninth aspect, the upper end portion and the flange portions on both sides of the holding member are arranged on the heat insulating material side of the inner box, and the lower end portion of the holding member is the inner box. It is arranged inside the refrigerator, and it is possible to prevent dew condensation water and food juice that have propagated through the inner box from entering the heat insulating material side.

According to a fifteenth aspect of the present invention, in the invention according to the fourteenth aspect, the lower end portion of the holding member abuts on the inner box or a structure on the inner box to perform vertical positioning, Variations in assembly downward can be suppressed.

According to a sixteenth aspect of the present invention, in the invention according to the sixth or seventh aspect, a reinforcing member is integrally molded on the side of the holding member that is filled with the heat insulating material. It is possible to prevent the cooling unit from being damaged, deformed, or displaced due to the deformation of the holding member.

According to a seventeenth aspect of the present invention, in addition to the sixth or seventh aspect of the present invention, the holding member is further provided with a notch hole for inserting a suction pipe connected to the compressor from the cooler. The suction pipe is fitted into the cutout hole, and variation when the suction pipe is taken out from the cooler attached to the indoor side to the heat insulating material side can be suppressed.

According to the eighteenth aspect of the invention, in the seventeenth aspect of the invention, the connecting portion between the cooler and the suction pipe is arranged on the indoor side of the holding member, which facilitates service replacement of the cooler. Become.

The invention according to claim 19 is the invention according to claim 17 or 18, further comprising a locking portion for positioning the suction pipe on the side of the holding member where the heat insulating material is filled. The suction pipe was damaged during handling,
It is not easily deformed, and it will not cause displacement when the heat insulating material is foamed and will not come into contact with the inner box or outer box to cause dew condensation.

According to a twentieth aspect of the present invention, in the invention according to the nineteenth aspect, the locking portion also has a function of adjusting the length of the suction pipe, which is larger than that of a heat insulating box such as a small refrigerator. Even when the length of the suction pipe becomes too long, the size can be easily adjusted without contact with other structures.

According to a twenty-first aspect of the invention, in the twentieth aspect of the invention, the length-adjusted suction pipe is arranged in the projection plane of the holding member, and the suction pipe projects from the holding member. Since it is not present, it is possible to prevent contact, bending, and breakage with other parts of the suction pipe before being inserted into the inner box.

According to a twenty-second aspect of the present invention, in addition to the sixth or seventh aspect of the present invention, a holding member is further provided with a concave portion for accommodating and storing the electrical wiring of the defrosting-related component, Wiring does not sag in the cooler storage space, and disconnection due to contact with the cooler during transportation of the cooling unit can be prevented.

According to a twenty-third aspect of the present invention, in addition to the sixth or seventh aspect of the present invention, a storage portion for temporarily storing electrical wiring is formed on the side of the holding member that is filled with the heat insulating material. Therefore, the electric wiring before connection is not scattered, the electric wires can be stacked and transported in a packaging box, etc., and the work can be performed without hindering the mounting of the holding member.

According to a twenty-fourth aspect of the present invention, in addition to the twenty-third aspect of the present invention, a cutout portion is further provided on the outer peripheral wall of the storage portion, and the foamed heat insulating material is stored from the cutout portion. Since the heat insulating material spreads to the inside of the room, a cavity does not occur, and problems such as dew condensation do not occur due to poor heat insulation.

The invention described in claim 25 is the invention according to any one of claims 1 to 4, wherein the height of the cooler is not more than twice the depth, and the same heat exchange is performed. By increasing the depth and reducing the height while maintaining the cooling performance in the area, the height of the cooling unit can be reduced and the height of the cooling unit can be reduced. Easy to fit. Further, the area of the opening of the inner box is reduced, and the sealing property at the time of assembly can be improved.

According to a twenty-sixth aspect of the present invention, in the invention according to any one of the first to fourth aspects, the liquid reservoir which is arranged at the outlet of the cooler and stores the liquid refrigerant is located on the cooler side. It is located in the area of the cooler and is tilted within the height range of the cooler.The height of the cooling unit can be reduced because the liquid reservoir does not protrude from the upper part of the cooler, and it is within the range of the back of the storage chamber. It is easy to store the cooling unit. Further, the area of the opening of the inner box is reduced, and the sealing property at the time of assembly can be improved.

According to a twenty-seventh aspect of the invention, in the twenty-sixth aspect of the invention, the return passage for returning the cool air circulating in the storage chamber to the cooler is located at the side of the cooler and is different from the liquid reservoir. It is arranged on the opposite side, and the return passage is housed in the ineffective space beside the cooler, so that it is possible to prevent the storage chamber volume from being reduced by the air passage.

According to a twenty-eighth aspect of the present invention, a step of attaching a cooling unit including at least a cooler and defrosting-related parts to a holding member, and attaching the holding member to the inner box opening from the heat insulating material side, the cooling unit. The step of fixing the inside box to the inside box, and the step of incorporating the inside box into the outside box and foaming the heat insulating material. It is possible to reduce the number of man-hours. Also,
By dividing the process, a large space is not required. Moreover, the workability and work accuracy can be improved because the work of assembling the individual components into the refrigerator body is released.

According to a twenty-ninth aspect of the present invention, a step of connecting a suction pipe leading to the cooler and the compressor, and a step of mounting a cooling unit including at least the cooler and defrosting-related parts on the indoor side of the holding member. A step of locking the suction pipe to the heat insulating material side of the holding member; a step of attaching the holding member to the opening of the inner box from the heat insulating material side to fix the cooling unit in the inner box; And the step of foaming the heat insulating material in the outer box, and by assembling the cooling unit parts into blocks and assembling them separately, the length of the assembly process of the refrigerator can be reduced and the number of steps can be reduced. Also, by dividing the process, a large space is not required. Further, since the cooler and the suction pipe are connected before the assembling, the connecting work such as welding is easy, and the problem of deforming the inner box by the welding work does not occur. Moreover, the workability and work accuracy can be improved because the work of assembling the individual components into the refrigerator body is released.

[0035]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a refrigerator according to the present invention will be described below with reference to the drawings.

(Embodiment 1) FIG. 1 is a sectional view of a refrigerator according to Embodiment 1 of the present invention. FIG. 2 is a perspective view of the cooling unit in the refrigerator of the same embodiment. Figure 3
[Fig. 3] is a perspective view from the back of the cooling unit of the same embodiment. FIG. 4 is a perspective view of the cooling unit of the embodiment before assembly. FIG. 5 is a perspective view of the cooling unit of the embodiment after assembly. FIG. 6 is a front view of the cooler chamber in the refrigerator of the same embodiment.

In FIG. 1, 30 is a refrigerator main body, 31 is an outer box forming a heat insulating box, 32 is a filled foam heat insulating material, and 33 is an inner wall forming the inner wall of the refrigerator main body 30. It's a box. Below the refrigerator compartment 34 is the freezer compartment 3.
5 and is divided by a heat insulating partition wall 36.

Numeral 37 is an open / close type refrigerating compartment door which closes the front opening of the refrigerating compartment 34, and 38 is a drawer type freezing compartment door which closes the front opening of the freezing compartment 35. Reference numeral 39 denotes a cooler room arranged behind the freezing room 35.
Includes a cooler 40, and a defrost heater 41 below the cooler 40.
The defrosting heater 41 of the cooler 40 is stored under the
Is provided with a water tray 42 for receiving defrosting water.
A blower fan 43 is provided above the cooler 40 and behind the heat insulating partition wall 36. The size of the cooler 40 is designed so that the height is less than twice the depth.

Reference numeral 44 is a partition plate for partitioning the freezer compartment 35 and the cooler compartment 39. In the lower rear part of the refrigerator 30, there is a machine room 4
5, the compressor 46 is arranged, and the upper part is provided with an evaporating pan 47 for accumulating water in the water receiving pan 42 and evaporating it by the heat of the compressor 46.

Referring to FIG. 2, a process of assembling the refrigerator 30 as shown in FIG. 1 will be described.

Defrosting-related devices such as the cooler 40, a defrosting heater 41, a defrosting end detector 48 (hereinafter referred to as a defrosting sensor 48), and a safety device (not shown) such as a temperature fuse for preventing overheating. The component 49 is locked to a resin holding member 50 (for example, polypropylene resin), and the cooling unit 51 is assembled.

Both sides of the holding member 50 have flange portions 50a toward the direction in which the cooler 40 is attached, and have a substantially U-shaped cross section. Reference numeral 50b is a fixing claw that hooks and fixes the cooler 40 on the holding member 50, and 50c is a holding portion that holds the defrost sensor 48. Reference numeral 50d denotes a sandwiching member integrally formed on the lower portion of the holding member 50 and sandwiches the defrosting device 41. All of these engaging members are holding members 5.
No. 0 is integrally formed.

Further, the holding member 50 is provided with a recess 50e around the periphery where the cooler 40 is mounted, and the electric wiring 49a of the defrosting-related component 49 is disposed in the recess 50e. In addition, the holding member 50 is provided with a cutout hole 50f in which a suction pipe 53 connected to a liquid reservoir 52 which is previously brazed and connected to an outlet portion of the cooler 40 and a capillary tube 54 for heat exchange are positioned.
Are formed.

Further, the liquid reservoir 52 is welded so that the upper portion thereof is inclined toward the inside of the refrigerator so as to be accommodated within the height of the cooler 40. 50g is an electric wiring 49a arranged in the recess 50e.
It is a through hole through which

FIG. 3 is a rear view of the cooling unit 51,
Reference numeral 55 is a reinforcing member integrally formed in a lattice shape in the vertical and horizontal directions of the holding member 50. Reference numeral 56 is a storage portion having a notch portion 56a in the reinforcing member 55 that extends from the upper, lower, left and right sides toward the outer box.

In FIG. 4, reference numeral 57 denotes an opening opened on the back surface of the inner box 33, and the cooling unit 51 is from the back surface of the inner box 33 as shown in FIG. 4, that is, from the side filled with the foamed heat insulating material 32. Mounted.

In FIG. 6, the partition portion 5 represented by the chain double-dashed line
8 cools the inside of the cooler chamber 39, and the cool air circulated in the storage chamber by the partition 58 and the wall surface of the inner box 33 cools the cooler 40.
To form a return passage 59.

As shown in the figure, since the upper end and both side ends of the holding member 50 are larger than the upper end and both end portions of the opening 57, they are closely fixed to the side of the inner box 33 where the heat insulating material 32 is filled. Further, the lower end portion of the holding member 50 is inserted into the lower end portion of the opening portion 57 and is closely fixed to the storage chamber side of the inner box 33. The flange portion 50a of the holding member 50 goes around the side portion of the inner box 33 and is assembled as shown in FIG.

Further, a gutter-shaped water receiving tray 42 for receiving the defrosting water of the cooler 40 is integrally formed with the holding member 50 at the lower portion of the defrosting device 41. Alternatively, the water tray 42 may be attached to the lower end of the holding member 50 by a hinge mechanism.

Regarding the refrigerator constructed as described above,
The operation will be described below.

First, the suction tube 53 soldered to the capillary tube 54 is welded to the cooler 40. Then, this assembly is fixed by hooking the cooler 40 on the fixing claw 50b of the holding member 50. At this time, the size of the cooler 40 has a height not more than twice the depth, and the liquid reservoir 52 is the cooler 4
Since it is pre-welded so as to fit within the height of 0, the height of the cooler chamber 39 becomes low, and the cooling unit 51 can be accommodated without increasing the opening 57 of the inner box.
Further, the opening 57 can be provided in the back surface region of the freezer compartment 35, and interferes with the heat insulating partition wall 36 to cool the cooling unit 51.
It does not hinder the installation. Further, since the ineffective space can be reduced, the effective internal volume of the freezer compartment 35 can be increased.

Then, the defrost heater 41 and the defrost sensor 4
8. Defrosting-related parts 49 such as a temperature fuse are fixed by engaging them with the holding member 50d, the holding portion 50c, and the like. Since the electric wiring 49a of the defrosting-related component 49 can be disposed in the recess 50e, it is possible to prevent the electric wiring 49a from being slackened, the air passage resistance, or broken due to being caught by the cooler 40.

Then, the suction pipe 53 is made to meander in the notch 56a formed between the accommodating portions 56 formed on the back surface of the holding member 50 so that the suction pipe 53 crawls within the projection surface of the holding member 50. It is easy to package when transporting or when carrying in the cooling unit 51 assembled by a mutual prosperity company, etc., and it is possible to improve logistics. In addition, the suction pipe 5 when handling
3 can be prevented from being deformed or broken, and when the heat insulating material 32 is foamed, the suction pipe 53 moves and comes into contact with the outer box 31 or the inner box 33, which may cause a quality problem such as dew condensation. Absent. Further, since the inserter can be inserted even if it is brazed first with the cooler 40, it is possible to prevent the inner box 33 from being deformed by the brazing and spread to other parts.

Furthermore, by making the suction pipe 53 meander and crawl within the projection plane of the holding member 50, the length dimension can be adjusted in a small space, and particularly in a small refrigerator such as a small refrigerator, the suction pipe 53 can be adjusted. It can be stored efficiently when the length of is too large.

Further, the electric wiring 4 crawled in the recess 50e
9a is turned to the back surface of the holding member 50, and the electrical wiring 49a of the defrosting-related component is temporarily stored in the storage portion 56. Therefore, when the cooling unit 51 is handled, the electric wires 49a can be organized without being entangled with each other, and the workability can be improved.

Then, in the next step, the cooling unit 51 is inserted and fixed in the opening 57 from the back side of the inner box 33. Further, the size of the opening 57 is smaller than that of the cooling unit 51, and the cooling unit 51 is inserted from the lower end while being inclined. Then, when the lower end portion hits the water tray 60, it is positioned, and the upper end of the holding member 50 is rotated until it reaches the heat insulating material side of the inner box 33.

In this way, the cooler 4 of the cooling unit 51
0 and defrosting-related parts 49 do not enter the inner box 33, and the upper end of the holding member 50 and both flanges 50a do not enter the opening 57, but are placed outside the inner box 33 and inside the heat insulating material 32. Buried. The lower end of the holding member 50 has the opening 5
7 and the water tray 60 is arranged below the defrost heater 41, the cooling unit 51 can be installed in almost the same posture regardless of the space of the cooler chamber 39. Further, it is possible to prevent the heat insulating material 32 from leaking into the refrigerator. In addition, rattling of the holding member 50 can be reduced. Further, it is possible to prevent the dew condensation water and the food juice that have propagated through the inner box 33 from entering the heat insulating material 32 side.

Then, the inner box 33 in which the cooling unit 51 is inserted is incorporated in the outer box 31 and filled with the foamed heat insulating material 32. The heat insulating material 32 that flows into the back surface of the cooling unit 51 flows into the storage portion 56 through the notch portion 56a, so that the heat insulating material 32 can be spread throughout.
Therefore, no hollow portion is formed, and it is possible to prevent the heat insulating property from deteriorating and the dew condensation and the cooling performance from deteriorating.
Further, the suction pipe 53 placed in the notch portion 56a is fixed by the heat insulating material 32 filled as it is.

At this time, before the foaming of the heat insulating material 32, the heat insulating partition wall 36 is attached to the inner box 33 in advance, and if the heat insulating material 32 is filled together with the cooling unit 51, the heat insulating partition wall 3 is formed.
6 can be fixed by the heat insulating material 32, which is excellent in design.

The deformation of the holding member 50 due to the foaming of the heat insulating material 32 can be prevented by the lattice-shaped reinforcing member 55, and the attached cooler 40 and the defrosting-related parts 49 are deformed, damaged or displaced. You can avoid the occurrence of quality problems.

In the cooling unit 51 incorporated in the inner box 33, the liquid reservoir 52 is arranged on one of both sides between the cooler 40 and the inner box 33, and the return passage 59 is arranged on the other side. The ineffective space in the cooler chamber 39 can be reduced, and the effective internal volume of the freezing chamber 35 arranged in front and the refrigerating chamber 34 above it can be increased.

(Second Embodiment) FIG. 7 is a cross-sectional view of the essential parts of a refrigerator according to a second embodiment of the present invention.

In FIG. 7, the holding member 61 is the holding means 6
1a is formed at the end, and the end of the inner box 62 is sandwiched and supported. Even if the heat insulating material 32 is filled, the holding means 6
Since a space between 1a and the inner box 62 is formed in a substantially U shape, even if the heat insulating material enters, the heat insulating material does not leak into the cooler chamber 39. Further, it is possible to prevent the dew condensation water and the food juice that have propagated through the inner box from entering the heat insulating material 32 side.

(Third Embodiment) FIG. 8 is a sectional view of a refrigerator according to a third embodiment of the present invention. FIG. 9 is a perspective view of the refrigerator of the embodiment before assembly.

In FIG. 8 and FIG. 9, 63 is a cooling unit, which is constructed by locking and fixing the cooler 40 and the defrosting-related parts 49 to the holding member 64, and the defroster of the cooler 41 is at the lower end thereof. A water receiving tray 65 for receiving water is integrally resin-molded.

With the above configuration, the defrost heater 4
1 and the water receiving tray 65 are stable in size, and reliability during defrosting can be improved. In addition, the holding member 64
Since there is no gap between the back surface of the device and the water receiving tray 65, defrosting water from the cooler 40 can be reliably received. Further, the water receiving tray 65 is integrated and the number of parts is reduced, so that the cost can be reduced.

At this time, in order to simplify the molding shape, it is possible to perform a rational molding by providing a hinge mechanism on the upper part of the water receiving tray 65 and aligning the direction of the drainage holes with the die cutting direction during molding.

(Fourth Embodiment) FIG. 10 is a sectional view of a refrigerator according to a fourth embodiment of the present invention. FIG. 11 is a perspective view before assembling the refrigerator of the same embodiment.

In FIGS. 10 and 11, reference numeral 66 is a cooling unit, which is constructed by locking and fixing the cooler 40, the defrosting-related parts 49, and the blower fan 67 to the holding member 68. The blower fan 67 is fixed above the holding member 68 with a space.

With the above structure, the blower fan 67
The assembly of the cooling components in the forced ventilation type refrigerator including the above can be integrated and incorporated, and the assembling quality can be improved and the assembling man-hour can be significantly reduced.
Further, the positional relationship between the cooler 40 and the blower fan 67 does not vary, the cooling quality is stable, and variation factors such as fan noise can be suppressed.

[0071]

As described above, in the invention according to claim 1 of the present invention, the cooling unit constituted by integrally incorporating the cooler and the defrosting-related parts is opened on the rear surface of the storage chamber of the inner box. Since it was attached to the opening from the side where the foam insulation was filled, the cooling unit was assembled before installation in the refrigerator body, freeing you from the work of installing the cooler and defrosting related parts in the narrow space inside the refrigerator, And the assembly accuracy is improved.

Further, in the invention according to claim 2, a cooling unit constituted by integrally incorporating a cooler, defrosting-related parts, and a blower fan is provided with foam insulation in an opening opened on the rear surface of the storage chamber of the inner box. Since it was attached from the side where the material is filled, a cooler and defrosting related parts,
The blower fan can be assembled, which eliminates the work of assembling the cooler, defrosting-related parts, and blower fan in the narrow space inside the refrigerator, and improves the assembling accuracy.

The invention described in claim 3 is the same as claim 1
Alternatively, in the invention according to claim 2, the cooling unit is filled with the foamed heat insulating material with respect to the inner box assembly in which the water receiver for defrosting water of the cooler is placed in the lower portion of the inner box opening on the indoor side. Since it is attached from the side, the water pan is accurately arranged below the cooler.

The invention described in claim 4 is the same as claim 1
Therefore, in the invention according to any one of claims 3 to 5, the storage chamber is the freezing chamber, and therefore the cooling element of the built-in cooler or the blower fan can be used for cooling the facing room as it is.

The invention described in claim 5 is the same as claim 1.
In the invention according to any one of claims 4 to 4, since the defrosting-related parts are composed of at least a defrost heater and a defrosting end detector, at least the defrosting end detector is added. The minimum required defrost-related parts can be assembled together. Furthermore, if a temperature fuse or the like for preventing excessive temperature rise during defrosting is added, the device can be integrally assembled including the safety device.

The invention described in claim 6 is the same as claim 1
In the invention according to any one of claims 4 to 4, since the cooling unit of the cooling unit is engaged and fixed to the holding member made of resin, the cooler and the defrost-related parts or the cooler and the defrost-related parts and the blower fan are engaged and fixed. The holding structure can be integrally formed according to each shape of the cooling unit, and the assembling to the holding member can be performed accurately and easily.

The invention described in claim 7 is the same as claim 6
Further, in the invention described in (1), since the water receiver of the defrosting water of the cooler is integrally formed on the lower portion of the holding member, the number of parts can be reduced and the cost can be reduced. Further, the positional relationship with the cooler, the defrost heater, etc. can be kept constant and the assembling accuracy is improved.

The invention described in claim 8 is the same as claim 6
In the invention described in (1), since the water receiving tray is integrated with the holding member by the resin hinge mechanism, even if the opening is small, the holding member can be bent at the upper part of the water receiving tray and inserted into the opening, and the sealing performance is improved. it can.

The invention described in claim 9 is the same as in claim 6.
Alternatively, in the invention according to claim 7, since the defrost heater is provided in the lower portion of the cooler, and the sandwiching members for sandwiching the defrost heater are integrally formed at both ends of the lower portion of the holding member. The number of steps can be reduced. Further, the positional relationship with the cooler is stable, and the defrosting accuracy is improved.

The invention according to claim 10 is the invention according to claim 6 or 7, wherein the holding member is larger than the opening portion, the cooling unit is smaller than the opening portion, and the inside of the foam insulating material is filled. Since it can be inserted into the box, a sealing surface between the holding member and the opening can be secured, and a decrease in strength due to the opening of the inner box can be suppressed.

The invention according to claim 11 is the invention according to claim 6 or 7, wherein the opening of the inner box is closed by the holding member from the side filled with the foamed heat insulating material. Leakage can be prevented.

According to a twelfth aspect of the invention, in the invention according to the eleventh aspect, the holding member has flange portions on both sides in a direction in which the cooler is attached, and has a substantially U-shaped cross section. Since the flange portion is formed and is engaged with the foam heat insulating material filling side on the side surface of the inner box, it is possible to prevent the heat insulating material from leaking into the refrigerator. Further, it is possible to reduce rattling of the holding member.

Further, the invention according to claim 13 is the same as the invention according to claim 12, further comprising pinching means for pinching the inner box side end portions at the ends of the flange portions at both ends. It is possible to prevent the dew condensation water and the food juice that have propagated through the heat sink from entering the heat insulating material side. Further, it is possible to prevent the heat insulating material from leaking from the side surface to the cooler chamber at the time of foaming.

According to a fourteenth aspect of the present invention, in the invention according to the ninth aspect, the upper end portion of the holding member and the flange portions on both sides are arranged on the heat insulating material side of the inner box, and the lower end portion of the holding member is Since it is arranged inside the inner box, it is possible to prevent the dew condensation water and food juice that have propagated through the inner box from entering the heat insulating material side.

Further, in the invention described in claim 15, in the invention described in claim 14, since the lower end portion of the holding member abuts on the inner box or a structure on the inner box to perform vertical positioning, Variations in assembly downward can be suppressed.

Further, in the invention described in claim 16, in the invention described in claim 6 or 7, since the reinforcing member is integrally molded on the side of the holding member that is filled with the heat insulating material, when the heat insulating material is foamed. It is possible to prevent the cooling unit from being damaged, deformed, or displaced due to the deformation of the holding member.

The invention according to claim 17 is the same as the invention according to claim 6 or 7, and further, the holding member is provided with a slit for inserting a suction pipe connected from the cooler to the compressor. Since the notch hole is formed, it is possible to suppress variation when taking out the suction pipe from the cooler to the heat insulating material side.

Further, in the invention described in claim 18, in the invention described in claim 17, since the connecting portion between the cooler and the suction pipe is arranged on the indoor side of the holding member, the service exchange of the cooler can be easily performed. it can.

The invention described in claim 19 is the same as the invention described in claim 17 or 18, further including a locking portion for positioning the suction pipe on the side of the holding member where the heat insulating material is filled. Is formed, the suction pipe is damaged during handling,
It does not easily deform, and it does not contact the inner box or outer box when foaming the heat insulating material and cause condensation.

Further, in the invention described in claim 20, in the invention described in claim 19, since the locking portion also has a function of adjusting the length of the suction pipe, the size of the heat insulating box body such as a small refrigerator is compared. Even when the length of the suction pipe becomes too long, the size can be easily adjusted without contact with other structures.

Further, in the invention described in claim 21, in the invention described in claim 20, since the length-adjusted suction pipe is arranged in the projection plane of the holding member, the suction pipe before being inserted into the inner box is provided. It is possible to prevent contact with other parts of the pipe, bending, and breaking.

Further, in the invention described in claim 22, in addition to the invention described in claim 6 or claim 7, the holding member is further formed with a recess for accommodating and storing the electric wiring of the defrosting-related component. First, the wiring can be prevented from being broken due to contact with the cooler during transportation of the cooling unit.

The invention according to claim 23 is the invention according to claim 6 or 7, further comprising a storage portion for temporarily storing electric wiring on the side of the holding member to be filled with the heat insulating material. Therefore, the electric wiring before the connection is not scattered, the transportation is easy, and the work can be performed without hindering the mounting of the holding member.

Further, in the invention described in claim 24, in addition to the invention described in claim 23, a cutout portion is further provided on the outer peripheral wall of the storage portion, so that the foamed heat insulating material is stored from the cutout portion. It is filled in the part, and problems such as dew condensation due to poor insulation do not occur.

The invention according to claim 25 is the invention according to any one of claims 1 to 4, wherein
Since the height of the cooler is not more than twice the depth, the height of the cooling unit can be reduced and it is easy to fit it within the range of the back surface of the storage chamber. Moreover, the area of the opening of the inner box is reduced, and the sealing performance can be improved.

The invention according to claim 26 is the invention according to any one of claims 1 to 4, wherein
The liquid reservoir, which is placed at the outlet of the cooler and stores the liquid refrigerant, is located on the side of the cooler and is tilted within the height range of the cooler, so the height of the cooling unit can be reduced and the storage room It is easier to fit within the range of the back. Moreover, the area of the opening of the inner box is reduced, and the sealing performance can be improved.

Further, in the invention described in claim 27, in the invention described in claim 26, the return passage for returning the cool air circulated in the storage chamber to the cooler is located at a side portion of the cooler, and the liquid reservoir Since it is arranged on the opposite side to, the ineffective space beside the cooler can be effectively utilized to prevent the reduction of the storage chamber volume due to the air passage.

The invention as set forth in claim 28, further comprising the step of attaching a cooling unit including at least a cooler and defrosting-related parts to the holding member, and attaching the holding member to the opening of the inner box from the heat insulating material side. Since it includes the step of fixing the cooling unit in the inner box and the step of incorporating the inner box into the outer box and foaming the heat insulating material, the length of the assembling step of the refrigerator can be reduced and the number of steps can be reduced. In addition, the space can be effectively used by dividing the process. In addition, workability and work accuracy can be improved.

According to a twenty-ninth aspect of the present invention, a step of connecting a cooling pipe to a compressor and a suction pipe leading to the compressor, and a cooling unit including at least the cooling device and defrosting-related parts are attached to the inside of the holding member. A step of locking the suction pipe to the heat insulating material side of the holding member; a step of fixing the cooling unit in the inner box by attaching the holding member to the opening of the inner box from the heat insulating material side; Since it includes the step of incorporating the inner box into the outer box and foaming the heat insulating material, the refrigerating unit assembly process length can be reduced and the number of steps can be reduced by separately forming the cooling unit components into blocks. In addition, the space can be effectively used by dividing the process. Also, connection work such as welding of the suction pipe is easy,
Workability and work accuracy can be improved.

[Brief description of drawings]

FIG. 1 is a sectional view of a first embodiment of a refrigerator according to the present invention.

FIG. 2 is a perspective view of a main part of the refrigerator according to the same embodiment.

FIG. 3 is a rear perspective view of a main part of the refrigerator according to the same embodiment.

FIG. 4 is a perspective view of the refrigerator of the embodiment before assembly.

FIG. 5 is a perspective view of the refrigerator according to the same embodiment after assembly.

FIG. 6 is a front view of a main part of the refrigerator according to the same embodiment.

FIG. 7 is a cross-sectional view of essential parts of a second embodiment of the refrigerator according to the present invention.

FIG. 8 is a sectional view of a refrigerator according to a third embodiment of the present invention.

FIG. 9 is a perspective view of the refrigerator of the embodiment before assembly.

FIG. 10 is a sectional view of a refrigerator according to a fourth embodiment of the present invention.

FIG. 11 is a perspective view of the refrigerator of the embodiment before assembly.

FIG. 12 is a sectional view of a conventional refrigerator.

[Explanation of symbols]

30 Refrigerator body 31 outer box 32 insulation 33 inner box 35 Freezing room (storage room) 40 cooler 41 Defrost heater 42,65 Water saucer 49 Defrosting-related members 49a Electric wiring 50, 61, 64, 68 Holding member 50a Flange part 50d clamping member 50e recess 50f Notch hole 51, 63, 66 Cooling unit 52 Liquid reservoir 53 Inhalation tube 55 Reinforcement member 56 Storage 57 opening 59 Return Passage 61a clamping member 67 Blower fan

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Fumio Ishikawa             4-2-5 Takaidahondori, Higashi-Osaka City, Osaka Prefecture               Within Matsushita Cold Machinery Co., Ltd. F term (reference) 3L102 JA01 KA01 LB02 LE04

Claims (29)

[Claims] 1. An outer box, an inner box, a heat-insulating box body formed by filling a space between the outer box and the inner box with a foam insulation material, a storage chamber formed in the heat-insulating box body, and a refrigeration cycle. In a refrigerator including the cooler and defrosting-related parts of the cooler, a cooling unit is configured by integrally incorporating the cooler and the defrosting-related parts, and the cooling unit is stored in the inner box. A refrigerator characterized in that the refrigerator is attached to an opening formed on a back surface of the chamber from a side filled with the foamed heat insulating material. 2. An outer box, an inner box, a heat insulating box formed by filling a space between the outer box and the inner box with a foam insulating material, a storage chamber formed in the heat insulating box, and a refrigeration cycle. In a refrigerator including a cooler, a blower fan that circulates the cool air cooled by the cooler in the storage chamber, and a defrost-related component of the cooler, the cooler, the defrost-related component, and the blower. A refrigerator characterized in that a cooling unit is configured by integrally incorporating a fan, and the cooling unit is attached from a side where the foamed heat insulating material is filled in an opening portion of the inner box which is opened on the back surface of the storage chamber. 3. The cooling unit is attached to the inner box assembly in which a water receiving tray for receiving defrosting water of a cooler is placed in the lower part of the inner box opening on the indoor side from the side filled with foamed heat insulating material. The refrigerator according to claim 1, wherein the refrigerator is a refrigerator. 4. The refrigerator according to claim 1, wherein the storage chamber is a freezing chamber. 5. The defrosting-related component comprises at least a defrosting heater and a defrosting end detector.
The refrigerator according to any one of claims 1 to 4. 6. The cooling unit has a resin holding member, and the cooler and defrosting-related parts or the cooler and defrosting-related parts and a blower fan are engaged and fixed to the holding member. The refrigerator according to any one of claims 1 to 4. 7. The refrigerator according to claim 6, wherein a water tray for receiving defrosting water of the cooler is integrally formed on the lower portion of the holding member. 8. The refrigerator according to claim 7, wherein the water tray is integrated with the holding member by a resin hinge mechanism. 9. The defrosting heater is provided in the lower part of the cooler, and a holding member for holding the defrosting heater is integrally formed at both ends of the lower part of the holding member. Refrigerator described. 10. The holding member is larger than the opening portion, and the cooling unit engaged with the holding member is smaller than the opening portion, so that the holding unit can be inserted into the inner box from the side filled with the foam insulation material. The refrigerator according to claim 6 or 7. 11. The refrigerator according to claim 6, wherein the opening of the inner box is closed from the foam heat insulating material filling side by a holding member. 12. The holding member is formed in a substantially U-shaped cross-section in a plan view, having flange portions on both sides in a direction in which the cooler is attached, and the flange portions are provided on a side of the inner box on which the foam insulation material is filled. The refrigerator according to claim 11, wherein the refrigerator is combined. 13. The refrigerator according to claim 12, wherein a sandwiching means for sandwiching the inner box side ends is formed at the ends of the flanges at both ends. 14. The upper end of the holding member and the flanges on both sides are arranged on the heat insulating material side of the inner box, and the lower end of the holding member is arranged on the inner side of the inner box. Refrigerator described. 15. The refrigerator according to claim 14, wherein the lower end of the holding member comes into contact with the inner box or a structure on the inner box to perform vertical positioning. 16. The refrigerator according to claim 6, wherein a reinforcing member is integrally formed on the side of the holding member that is filled with the heat insulating material. 17. The refrigerator according to claim 6 or 7, wherein the holding member is formed with a cutout hole for inserting a suction pipe connected to the compressor from the cooler. 18. The refrigerator according to claim 17, wherein the connecting portion between the cooler and the suction pipe is arranged on the indoor side of the holding member. 19. The refrigerator according to claim 17, wherein a locking portion for positioning the suction pipe is formed on a side of the holding member that is filled with the heat insulating material. 20. The refrigerator according to claim 19, wherein the locking portion also has a function of adjusting the length of the suction pipe. 21. The refrigerator according to claim 20, wherein the suction pipe whose length is adjusted is arranged in the projection plane of the holding member. 22. The holding member is formed with a recess for arranging and storing the electric wiring of the defrosting-related component.
Alternatively, the refrigerator according to claim 7. 23. The refrigerator according to claim 6 or 7, wherein a storage portion for temporarily storing electrical wiring is formed on a side of the holding member that is filled with the heat insulating material. 24. The refrigerator according to claim 23, wherein a cutout portion is provided on an outer peripheral wall of the storage portion. 25. The refrigerator according to claim 1, wherein the height of the cooler is twice the depth or less. 26. The liquid reservoir, which is arranged at the outlet of the cooler and stores the liquid refrigerant, is located at the side of the cooler and is arranged to be inclined within the height range of the cooler. The refrigerator according to any one of claims 1 to 4. 27. The return passage for returning the cool air circulated in the storage chamber to the cooler is located on a side of the cooler, and is arranged on the side opposite to the liquid reservoir. refrigerator. 28. A step of attaching a cooling unit comprising at least a cooler and defrosting-related parts to a holding member, and attaching the holding member to the opening of the inner box from the heat insulating material side to fix the cooling unit in the inner box. A method of manufacturing a refrigerator comprising the steps of: incorporating the inner box into an outer box and foaming a heat insulating material. 29. A step of connecting a suction pipe leading to a cooler and a compressor; a step of mounting a cooling unit including at least the cooler and defrosting-related parts on the indoor side of a holding member; and the holding pipe holding the suction pipe. Locking the member to the heat insulating material side, attaching the holding member to the inner box opening from the heat insulating material side to fix the cooling unit in the inner box, and incorporating the inner box into the outer box A method of manufacturing a refrigerator, which comprises the step of foaming.