JPH1144479A - Refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator matched with the disposing policy of waste home appliance by securing the space of installing a condenser main part at the upper part of a compressor and eliminating the need of putting on extraneous condenser pipes on the outer box of a refrigerator. SOLUTION: In a refrigerator formed with a freezing compartment 2 at the lowest row of the refrigerator, a vegetable compartment 3 at the upper row of the lowest and a machine compartment 17 at the rear of the freezing compartment 2, the machine compartment 17 is provided with the highest part P of the inclined part 23a of the ceiling part of it positioned inside a projecting plane of the thickness of the thermally insulated wall 6 partitioning between the freezing compartment 2 and the vegetable compartment 3 at the upper row of it and provided with a space for installing a main condenser 20 at the upper part of the compressor 19.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator, and more particularly, to a refrigerator in which a freezing compartment is formed at a lowermost stage, a vegetable compartment is formed at an upper stage, and a cooler and the like are stored at the back of the freezing compartment.

[0002]

2. Description of the Related Art In a conventional refrigerator of this type, a foam insulation material is filled between an outer box and an inner box, and the inside of the refrigerator is partitioned into a plurality of temperature zones to store a plurality of storages suitable for each food temperature. There is a room. A conventional refrigerator of this type is disclosed in, for example,
The thing described in 324853 is known. A conventional refrigerator described in the publication will be described with reference to FIGS. FIG. 6 is a longitudinal sectional view showing the structure of a conventional refrigerator, and FIG.
Is an enlarged view of a main part showing a machine room of the refrigerator in FIG. 6, and FIG.
FIG. 7 is an explanatory diagram showing an attached state of a condensation pipe in the refrigerator of FIG. 6.

In the refrigerator shown in FIGS. 6 to 8, a vegetable compartment 102 is formed in an upper stage of a freezing compartment 101 at a lowermost stage, and a refrigerator compartment 104 is formed on a vegetable compartment 102 via a partition plate 103. In this refrigerator, the heat insulating partition wall 105 that partitions the vegetable room 102 and the freezing room 101 is usually formed separately from the inner box 106a that forms the inside of the refrigerator. In the figure, 10
7 is a defrosting tube heater, 108 is a cooler, 109 is a cool air circulation fan, and 110 is a cool air passage. As shown in the figure, the defrosting tube heater 107, the cooler 108, and the cool air circulation fan 109 are disposed on the back wall of the freezing room 101 and the vegetable room 102 with the defrosting tube heater facing down as shown in FIG. It is mounted as if it were vertically stacked in the range of H5 dimensions.

[0004] Reference numeral 119 denotes a partition plate.
The freezer compartment 101 is separated from the cooler 108 and the like arranged at the rear of the freezer compartment 101. Reference numeral 117 denotes a machine room formed on the lower rear surface of the refrigerator main body. In the machine room 117, a compressor 114 and the like are installed. Usually, the compressor 11
4 has a height of about 150 to 250 mm, the ceiling 117 a of the machine room 117 is, as shown in FIG.
Is located above the level of the bottom surface 101a.

[0005] The defrosting tube heater 107 and the cooler 10
8. Since the cool air circulation fan 109 is located above the ceiling surface 117a of the machine room 117, the units of these devices are in the range of the height H4 at the frontage of the freezing room 101,
The ceiling surface 117a is not enough for being located above,
At present, it is arranged over the back of the vegetable room 102. Therefore, the above-described heat-insulating partition wall 105 and the like have to take a complicated shape heat-insulating partition wall structure.

In FIG. 7, reference numeral 115 denotes a defrosting water evaporating condenser installed in a space connected to a machine room 117 formed below the freezing room 101, and 116 denotes a defrosting water evaporating dish. The defrosting water evaporating dish 116 stores defrosting water generated when defrosting the frost attached to the cooler 108. That is, the defrost water received by the gutter 120 passes through the drain pipe 121 and is guided to the defrost water evaporating dish 116 as shown in the figure.

[0007]

As shown in FIGS. 6 to 8, a heat insulating partition wall 1 between a vegetable room 102 and a freezing room 101 is provided.
05 and the inner box 106a of the refrigerator are formed separately, the heat insulating partition wall 105 and the inner box 106a
There is a problem that water leaks from the abutting portion. This becomes more problematic as the structure of the heat insulating partition wall 105 becomes more complicated. Above the compressor 114, a defrosting tube heater 107, a cooler 108, and a cool air circulation fan 109 are provided.
In a conventional refrigerator containing devices such as
In order to secure the internal volume of 01, the space of the machine room 117 had to be reduced.

For this reason, it is not possible to secure a large place for installing the main condenser relating to the main part of the condenser in the machine room 117. Therefore, as shown in FIG. And instead of the main condenser. This condenser pipe 118 is previously attached to the inside of both side plates separately when forming the box body 106 by urethane foaming, connected after forming the box body, and further connected to the condenser 115 for defrost water evaporation. They were taking troublesome steps.

As described above, since the defrost condenser 115 and the condensing pipe 118 cannot be piped in advance, there is a problem that the refrigerating cycle is not easily assembled. Further, since the metal side plate and the condensing pipe 118 are bonded and fixed to urethane, there is a problem that it is difficult to separate and dispose of the refrigerator when disposing of the refrigerator, so that it is impossible to cope with so-called waste home appliances.

Further, if the condensing pipe 118 is stopped and the main condenser having the same heat radiation amount is disposed in the space on both sides of the compressor 114, the mountability of the main condenser deteriorates in terms of space and the like. There was a problem. Further, as shown in FIG. 7, a drain pipe 121 is required between the gutter 120 for receiving the defrost water and the defrost water evaporating dish 116.
In addition, in the refrigerator having the configuration as shown in FIG. 7, the cooler 108 having the lowest temperature in the refrigerator is provided in the machine room 117, particularly in a place most susceptible to the heat radiated by the compressor 114.
There was a problem that would be located.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and a space for installing a main part of a condenser can be secured above a compressor, and an extra condenser pipe is provided in an outer box of a refrigerator. It is an object of the present invention to provide a refrigerator suitable for waste home appliances, which does not need to be attached. Also,
Another object of the present invention is to secure the thickness of the heat insulating wall at the top of the machine room to reduce heat leakage to the freezing room, and accommodate a blower for cooling air circulation larger than the depth dimension of the cooler at the inclined portion of the machine room ceiling. It is to provide a refrigerator that can be used.

[0012]

In order to achieve the above object, the most basic structure of a refrigerator according to the present invention is that a refrigerator compartment is formed at the bottom of the refrigerator and a vegetable compartment is formed at the top of the refrigerator. A refrigerator in which a machine room is formed at the rear of the refrigerator, wherein the machine room has a surface on which the highest part of the slope of the ceiling surface projects the thickness of the heat insulating partition wall separating the freezing room and the vegetable room on the upper stage. And a space in which a main part of the condenser can be installed above the compressor. Here, the ceiling surface of the machine room is an inclined surface facing upward toward the rear plate side of the refrigerator.

Thus, the heat insulating partition wall does not have to have a complicated shape (especially the vegetable room side), and it is not necessary to partially increase the heat insulating wall around the machine room ceiling.
At the same time, by increasing the height of the machine room, it is possible to secure a space for installing the main part of the condenser above the compressor. Etc.), so there is no need to attach an extra condenser pipe to the refrigerator.

In order to achieve the above object, a more specific configuration of the refrigerator according to the present invention is that a freezer compartment is formed at the bottom of the refrigerator and a vegetable compartment is formed at the top of the refrigerator, and a mechanical compartment is provided behind the freezer. In a refrigerator comprising a chamber, between the vegetable compartment and the bottom wall of the freezer compartment, a heater for defrosting tube, a cooler, and a blower for circulating cold air are arranged in a vertical position so as to be stacked from below, The ceiling surface of the machine room is an inclined surface that faces upward toward the rear plate side, and the upper and lower ends of the inclined surface are upper and lower ends of the refrigerator rear plate portion that is located substantially in a plane that projects the thickness of the heat insulating partition wall. The cooling air circulating blower is provided as a facing portion.

In addition to the above-described effects, the cooling air blower (dimension between the blower and the motor) larger than the depth of the cooler is absorbed by the inclined portion of the heat insulating wall without providing a dedicated hollow or the like. You can do it. In addition, the ceiling surface of the machine room is an inclined surface facing upward toward the rear panel, improving the air flow inside the machine room, increasing the thickness of the heat insulating wall at the top of the machine room, and reducing the amount of heat leakage to the freezing room. It is something to do.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.
This will be described with reference to FIG. FIG. 1 is a longitudinal sectional view of a main part of a refrigerator showing an embodiment of the present invention, and FIG.
3 is an enlarged view of the cooler room shown in FIG. 2, and FIG.
Is a cross-sectional view of a main part of FIG. 1, and FIG. 5 is a cross-sectional view of a main part of a refrigerator showing another embodiment of the present invention.

First, a refrigerator according to the present embodiment will be described with reference to FIG. In FIG. 1, reference numeral 1 denotes a refrigerator main body, and the refrigerator main body 1 has a freezer compartment 2, a vegetable compartment 3, and a refrigeration compartment 4 inside thereof from below. In other words, the refrigerator main body 1 has the vegetable room 3 formed at the center of the refrigerator main body 1 in the height direction. This is a refrigeration room 4 that is frequently used,
This is an attempt to provide the vegetable room 3 at a convenient position.

The containers 2a and 3a constituting the freezer compartment 2 and the vegetable compartment 3 of the refrigerator shown in FIG. 1 are pulled out in conjunction with opening and closing of a drawer door described later. Reference numeral 5 denotes an inner box that forms the interior of the refrigerator, and the inner box 5 integrally forms a heat insulating partition wall 6 that partitions between the freezer compartment 2 and the vegetable compartment 3. The vegetable compartment 3 side of the heat insulating partition wall 6 has a planar shape as shown in FIG. Reference numeral 7 denotes a freezer compartment door, and the door 7
Is attached to the door 7 side with the rail frame 8. Therefore, the container 2a moves in and out according to the opening and closing of the freezer compartment door 7. Similarly, 9 is a vegetable room door, and this door 9
a is attached to the door 9 side with the rail frame 10. Therefore, the container 3a moves in and out according to the opening and closing of the vegetable room door 9.

The dimension H from the upper surface 9a of the vegetable room door 9 to the floor is set to a height of about 760 to 930 mm which is easy for a user such as a housewife to handle. In other words, in this refrigerator, the opening height at the frontage of the vegetable compartment 3 is around 200 to 350 mm, and the opening height at the frontage of the freezing compartment 2 is around 350 mm. Defroster tube heater 1 set within this freezer opening height H2.
2. The dimension H1 in which the cooler 11 and the cool air circulating blower 13 are stacked is set at about 350 mm.
≒ H2. By doing so, it is not necessary to form the heat insulating partition wall 6 into a complicated shape in order to store the cooler 11 and the like as in the related art. It will be better.

Reference numeral 11 denotes a cooler, which constitutes a refrigeration cycle with a compressor, a main condenser, and the like, which will be described later. Further, 12 is a defrosting tube heater attached to a gutter below the cooler 11, 13 is a cool air circulating blower installed above the cooler 11, 14
Indicates a gutter provided below the defrosting tube heater 12. Thus, the defrosting tube heater 12, the cooler 11, and the cool air circulating blower 13 are arranged in a vertical position such that the defrosting tube heaters are placed one above the other.

Reference numeral 16 denotes a partition plate for partitioning the cooler room 15 in which the cooler 11 and the like are installed and the freezing room 2 side. The partition plate 16 is provided at a discharge port (shown in FIG. ) And also serves as a fan guard. 17
Is a machine room formed from the bottom to the back of the freezing room 2, and the machine room 17 is formed in a direction to reduce the internal volume of the freezing room 2 (concave toward the freezing room 2).
In other words, the machine room cover 18 is attached to the rear of the freezer compartment main body 1 with a size that does not make much business.

Reference numeral 19 denotes a compressor installed in the machine room 17, 20 denotes a main condenser related to a main part of the condenser installed above the compressor 19, and 21 denotes a main condenser installed in the refrigerator-side machine room. The defrosted water evaporation condenser 22 is a defrosted water evaporation dish installed on the condenser 21. The defrost water stored in the defrost water evaporating dish 22 receives heat from the condenser 21 and is promoted to evaporate.

Next, the machine room 17 in which the compressor 19 and the condenser 20 are mounted will be described. As is clear from the figure, the machine room 17 of the refrigerator main body 1 provided with the present invention.
Has a height such that the main condenser 20 can be installed above the compressor 19. That is, the front end P of the inclined portion 23 a of the heat insulating wall 23, which corresponds to the back of the freezing compartment 2, is located in a plane on which the thickness of the heat insulating partition wall 6 is projected, and is connected to the rear plate 1 a of the machine room 17. That is, this machine room 17
Has an inclined portion 23a facing upward toward the rear plate 1a. The other end of the inclined portion 23a is connected to an installation facing portion of the cool air circulation blower 13.

In order to install the blower 13 for circulating cool air, the heat insulating wall is inevitably cut (thinned). The lower end of the inclined portion 23a is connected to the cool air circulation blower 13.
In addition to increasing the heat insulation thickness of the thin portion, the triangular corner formed at the corner (the triangular corner formed between the heat insulating partition wall and the inclined portion 23a) is formed by the air blower 13 for cooling air circulation. Can be used for installation.

Normally, in this type of refrigerator main body 1, the opening height H2 of the freezing compartment 2 is generally secured to 350 mm or more. Therefore, the position of the heat insulating partition wall 6 is at least 350 mm in frontage dimension of the freezer compartment 2 plus a dimension H3 (100 to 150 m) from the floor surface to the freezer compartment bottom wall 23b.
m) or more. This usually corresponds to 1/3 to 1/4 of the height of the refrigerator, depending on the height of the refrigerator main body 1. In other words, the machine room 17 provided with the present embodiment is configured to be large accordingly. The compressor 19 and the main condenser 20 are mounted in the large machine room 17 so as to be positioned vertically. Of course, the main condenser 20 is formed by the inclined portion 2 of the heat insulating wall 23.
It may approach 3a.

Next, referring to FIG. 2, the defrosting tube heater 1 will be described.
2, the relationship between the gutter 14, the defrost water evaporating dish 22, the compressor 19 and the like will be described. First, the height of the compressor 19 is 200
It is usually more than mm. Therefore, the base 24
Is generally higher than a dimension H3 (100 to 150 mm) from the leg 24a (installed floor surface) to the freezer compartment bottom surface 23b.
Therefore, the compressor 19 is installed so as to overlap the cooler 11 in the cooler room 15 in the height direction. In other words, the lower end of the cooler 11 is installed near the bottom surface 23b of the freezer compartment as shown in the figure. The defrosting tube heater 12 installed below the lower end of the cooler 11 is disposed close to the inside of the gutter 14.

Next, the relationship between the cool air circulation blower 13 and the heat insulating partition wall 6 will be described. As shown in FIG. 2, in the present embodiment, the cooler 11 and the cool air circulation blower 13 are arranged on the defrosting tube heater 12 so as to be stacked vertically. For this reason, if the dimension of each member stacked in the vertical direction is about 350 mm when the opening height H2 of the freezing compartment 2 is about 350 mm, the opening height H2 of the freezing compartment 2 is not affected and the inside of the opening height H2 of the freezing compartment 2 is not affected. Can be attached and detached.

Within the H2 dimension, the defrosting tube heater 1
2. In some cases, it is difficult to install the cooler 11 and the cool air circulation fan 13 in terms of dimensions. In this case, the defrosting tube heater 12 is disposed in the gutter 14 recessed to receive the defrost water, or as close to the gutter 14 as possible. On the other hand, in the upper part, the heat insulating partition 6
A concave portion 6a for securing a storage space for the blower 13 for cooling air is formed in the tube heater 1 for defrosting within the dimension H2.
2. The cooler 11 and the cool air circulation blower 13 can be installed. This is the same in the case of a cooling box 30 described later.

Next, referring to FIG. 3, the defrosting tube heater 1 will be described.
2, the cooling box 30 to which the cooler 11 and the cool air circulation blower 13 are attached will be described. The cooling box 30 forms the cooling box 30 together with the partition plate 16 described above. Further, as shown in FIG.
4 may be integrally formed, or the cold air duct 31 and the like may be integrally formed. The cooling box 30 is formed by injection molding or the like, and although not shown in the drawing, the defrosting tube heater 12, the cooler 11, and the cool air circulating blower 13 are integrated with or separately from the cooling box 30. Mounting part provided (not shown)
Are attached and fixed with screws or the like.
Needless to say, the dimensions of the cooling box 30 at this time are H1 + α, so that some contrivance is required at the time of assembly. Further, the cooler room 15 described above points inside the cooling box 30.

With the above-described configuration, the defroster tube heater 12, the cooler 11, the cool air circulating blower 13, and a temperature controller, a temperature fuse and the like (not shown in the figure) are used as a unit to form a refrigerator. It is possible to assemble the cooling box 30 outside the assembly line. further,
The cooling box 30 assembled as a unit as described above is
As shown in FIG. 2, it is possible to reduce the degree of difficulty in vacuum forming the inner box 5 by assembling the inner box 5 at the back of the freezer compartment 2 and filling the foam box 32 between the cooling box 30 and the outer box 29. Things.

In this embodiment, the cooling box 30 and the gutter 1
4. Although an example is shown in which the cold air duct 31 and the like are formed as a single unit, the effects of the present invention are not lost even if they are formed separately. Conversely, considering that H1 ≒ H2, the gutter 14 shown in FIG.
If the gutter 14 is first installed in the mounting recess formed in 3b, it is possible to easily install H1 ≒ H2 dimensions. Of course, at this time, the defrosting tube heater 12
It is better to form a part on the gutter 14 side.

Next, the machine room 17 will be described with reference to FIG. In FIG. 4, 25 is a blower for cooling the machine room, 21
Is a condenser for evaporating defrost water.
As shown in the drawing, the side plates 1a and 1b of the refrigerator main body 1, the duct plate 26, and the bottom plate 27 (see FIG.
) In the spatial region surrounded by This space region 28 communicates with the machine room 17 via the blower 25. Therefore, in order to cool the condenser 21,
The air sucked into the space area 28 from the front side of the refrigerator as shown by the arrow, after cooling the condenser 21, is blown to the compressor 19 by the machine room cooling blower 25. This allows the compressor 19 and the main condenser 20
(Refer to FIGS. 1 and 2, the broken line in FIG. 4). In this process, the defrost water in the defrost water evaporating dish 22 is evaporated by receiving heat from the defrost water evaporation condenser 21.

FIG. 5 shows an example of installation of the main condenser 20 different from those in FIGS. In the embodiment shown in FIG. 5, the compressor 19 is accommodated in one side of the machine room 17. The main condenser 20 is located next to the compressor 19 and is arranged from the upper part to the lower part of the height of the compressor.
This storage structure is particularly effective for wide refrigerators (refrigerators exceeding 600 mm).

Since the embodiment of the present invention has the configuration as described above, the defrosting tube heater 12, the cooler 11, and the cool air circulating blower 13 are installed on the back of the freezing compartment 2 in the freezing compartment 2. The frontage height dimension H2 can be stored by making the most of it. Conversely, the above components (cooler 1)
By making the stacking height H1 of 1) substantially equal to the height H2 of the freezing compartment 2, the heat insulating partition wall 6 does not have to be complicated as in the related art.

At this time, the gutter 14 is embedded in the bottom surface 23 b of the heat insulating wall 23, and the defrost water is directly drained into the defrost water evaporating dish 22. In particular, by positioning the drainage port 14a (shown in FIG. 2) of the gutter 14 at this time in front of the compressor 19 where the temperature is high, the drainage port 14a exchanges heat with air before performing heat exchange with the compressor 19. As a result, the influence of heat on the freezer compartment through the gutter 14 is reduced.

Further, since only the cooler 11 of the main components constituting the refrigeration cycle is installed in the refrigerator body 1, the main condenser 20, the cooler 11, and the cooler 11 are provided.
In the present embodiment, the pipe connection between the compressor and the compressor 19 has been a problem.
By being located relatively close to the compressor 19 and the like, it is possible to easily connect the piping by penetrating the heat insulating wall 23. The machine room 17
, The main condenser 20 can be installed above the compressor 19, and the air that has exchanged heat with the compressor 19 and the main condenser 20 is supplied to the blower 25 for cooling the machine room. Accordingly, heat is forcibly discharged to the outside of the machine room 17 along the inclined surface.

Further, since the heat insulating wall of the cool air circulation blower 13 has a sufficient thickness, heat invasion from this portion into the freezer compartment can be minimized. The inclined portion 23a of the heat insulating wall 23 can absorb a size larger than that of the cooler 11 without providing a dedicated hollow or the like for the cool air circulation blower having a size larger than the size (dimension between the blower and the motor). Things.

[0038]

As described in detail above, according to the present invention, a space for installing the main part of the condenser can be secured above the compressor, and an extra condenser pipe can be attached to the outer box of the refrigerator. Thus, it is possible to provide a refrigerator suitable for waste home appliances, which does not need to be performed. Further, according to the present invention, the heat insulation wall thickness at the upper part of the machine room is ensured to reduce the heat leakage to the freezing room, and the blower for cooling air circulation larger than the depth dimension of the cooler is accommodated in the inclined part of the machine room ceiling. Can be provided.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a refrigerator showing one embodiment of the present invention.

FIG. 2 is an enlarged view of a portion A in FIG.

FIG. 3 is an enlarged view of a cooler room shown in FIG. 2;

FIG. 4 is a cross-sectional view of a main part of FIG.

FIG. 5 is a cross-sectional view of a main part of a refrigerator showing another embodiment of the present invention.

FIG. 6 is a longitudinal sectional view showing a conventional refrigerator structure.

FIG. 7 is an enlarged view of a main part showing a lower part of the refrigerator of FIG. 6;

FIG. 8 is a rear view showing a state in which a condensation pipe is attached to the refrigerator of FIG. 6;

[Explanation of symbols]

1 ... refrigerator body, 2 ... freezer room, 3 ... vegetable room, 5 ... inner box,
6 ... heat insulating partition wall, 11 ... cooler, 12 ... defrosting tube heater, 13 ... cool air circulation blower, 14 ... gutter, 15 ... cooler room, 16 ... partition plate, 17 ... machine room, 18 ... machine room Cover, 19: compressor, 20: main condenser, 21: condenser for defrosted water evaporation, 22: defrosted water evaporation dish, 23: heat insulating wall, 23a: inclined portion, 25: cooling fan.

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yasuyuki Matsumura 709 Tomita, Ohira-cho, Ohira-cho, Shimotsuga-gun, Tochigi 2 Within Hitachi Tochigi Eketronics Co., Ltd.

Claims (3)

[Claims] 1. A refrigerator comprising: a freezer compartment at the bottom of the refrigerator; a vegetable compartment at the top; and a machine compartment at the rear of the freezer compartment. The highest part is formed so as to be located substantially in a plane that projects the thickness of the heat insulating partition wall that separates the freezing room and the vegetable room at the upper stage, and a space in which a main part of a condenser can be installed above the compressor. A refrigerator comprising: 2. The refrigerator according to claim 1, wherein a ceiling surface of the machine room has an inclined surface facing upward toward a rear plate side of the refrigerator. 3. A refrigerator in which a freezing compartment is formed at the bottom of the refrigerator and a vegetable compartment is formed above the refrigerator, and a machine compartment is formed behind the freezing compartment, wherein a space between the vegetable compartment and the bottom wall of the freezing compartment is provided. A defrosting tube heater, a cooler, and a blower for circulating cool air are arranged in a vertical position from the bottom, and the ceiling surface of the machine room has an inclined surface facing upward toward the rear plate, and the inclined surface is formed. The upper and lower ends of the refrigerator are characterized in that an upper end is a rear plate portion of the refrigerator substantially located in a plane where the thickness of the heat insulating partition wall is projected, and a lower end is a facing portion of the cool air circulation fan.