JPS597875A - Refrigerator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention has the compressor installed in the machine room formed at the bottom of the refrigerator, and the main condenser installed on the two sides of the refrigerator, thereby saving space and power, while also installing the main condenser in the machine room formed at the bottom of the refrigerator. The present invention relates to a so-called back-contact type refrigerator that does not deteriorate performance even if the refrigerator is installed with its back side substantially close to a wall or the like.

Simple back-contact type refrigerators are commercially available from various manufacturers. To explain its structure in Figures 1 to 3, ■
1 is a refrigerator main body, and this refrigerator main body 1 has an interior (not shown) formed therein. 2.3 is a freezer compartment door that closes the front opening inside the refrigerator, and is a refrigerator compartment door. The outer box 4 forming the outer shell of the refrigerator main body 1 is composed of a table plate 5 forming a ceiling surface, a side plate 6, a back plate 7, a bottom plate 8, etc. 9 is a compressor, 10 is a defrost water evaporation tray, 11
9 is a drainage condenser for evaporating the defrosting water accumulated in the defrosting water evaporating tray, and these items 9, 10, and 11 are installed in the machine room 12 formed at the bottom of the refrigerator body 1. 13 is a main condenser pipe.As shown in the figure, this main condenser pipe 13 is attached closely to the back side of the decorative cover 14, and the decorative knee 14 is used as a heat sink.15 is a main condenser pipe. This is a machine room cover 1 that covers the rear part of the machine room 12 where the compressor 9 etc. are installed.The decorative cover 14 and the machine room cover 15 are connected to the protrusion 16 formed on the back of the refrigerator body 1. The decorative cover 14 and the machine room cover 15 are installed so that they are located on substantially the same plane.At this time, there is a space between the back plate 7, the decorative cover 14, and the machine room cover 15 as shown in FIG. A heat exhaust passage 17 is formed.In other words, this heat exhaust passage 17 is formed even when the refrigerator main body 1 is installed with its back side substantially in close contact with a wall or the like as shown in FIG. The air that has exchanged heat with the drain condenser 11 and the compressor 9, the humid air that has evaporated from the defrost water evaporation tray, and the air that has exchanged heat with the main condenser vibe 13 is radiated to the outside through the heat exhaust passage 7. It is something that

A refrigerator having such a configuration is a typical back-contact type refrigerator currently on the market as described above.

Although the back design of this refrigerator was certainly improved, it was not able to meet the needs of customers who are now demanding space and power savings.

In other words, in the case of the previous refrigerator, the L1 dimension of the heat exhaust passage 17 for discharging the air that has exchanged heat with the main condenser pipe] 3 to the outside must be secured behind the back plate 7 as in the conventional refrigerator. It was something that should not have happened. In addition, in this type of refrigerator, the heat exchange air with the main condenser pipe 13 becomes warm air that exchanges heat with the compressor 9 and the drain condenser 11, so that the heat exchange of the main condenser pipe 13 itself is In addition to being significantly lower than conventional refrigerators that do not have this type of decorative cover, since the back of the refrigerator body 1 is covered with the decorative cover 14 and the machine compartment cover 15, the compressor 9, drainage condenser 11, The extremely high-temperature air that has exchanged heat with the main condenser pipe 13 passes through the heat exhaust passage 17, which also heats the inside of the refrigerator, increasing the amount of heat leakage inside the refrigerator, which goes against power saving. It also had some defects.

In order to improve this defect, the present invention is designed so that the back side of the refrigerator is mounted on a wall, etc., so that even if the refrigerator is used for a period of time in close contact with the refrigerator, the air that cools the compressor and drain condenser does not become a heat load inside the refrigerator. This invention contributes to the above-mentioned space saving by directing heat to the rear of the ceiling of the refrigerator and then discharging it to the outside.

The details of the present invention will be explained below with reference to an embodiment shown in FIGS. 4 to 10. Reference numeral 21 denotes a refrigerator main body, and this main body 21 forms a refrigerator interior 22 inside. 23 and 24 are doors that close the front opening of the interior 22, 23 is the freezer compartment door, and 24
is the refrigerator door.

The outer box 25 forming the outer shell of the refrigerator main body 21 is composed of a ceiling plate 26, a side plate 27, a back plate 28, a bottom plate 29, and the like. 30 is a compressor, 31 is a defrosting water evaporation dish,
32 is a drainage condenser for evaporating the defrost water accumulated in the 1 residual frost water evaporation tray 31, these item numbers 30.31.3
2 is installed in a machine room 33 formed at the bottom of the refrigerator main body 21. Reference numeral 34 indicates a heat exhaust passage formed in the traverse portion of the back plate 28. This heat exhaust passage 34 is formed by a back plate 281 with a cross-sectional groove shape, with a step of about 30 mm formed over the entire length at a width of about 50 mm on the side edge. . The reason why the heat exhaust passage 34 is formed in this part is to use the heat insulating wall thickness (the thickest part) as shown in FIG. is (mechanical chamber). 36 indicates the inclined surface formed on the first mechanical chamber cover 35, and 37 further indicates the heat exhaust port formed on the inclined surface. The sloped surface 36 is formed with a width of approximately 50 mm or more from the side part (width greater than the heat exhaust passage 50 of the back plate).The width of this sloped surface is determined by the relationship with the amount of heat discharged in the machine room. is set.

Further, this machine room cover 35 is installed so that it is positioned substantially on the same plane as the previous rear plate 28.

38 is a main condenser installed on the ceiling plate 26, and 39 is a decorative bracket that covers the main condenser 38 in a decorative manner. As shown in FIG. 7, this decorative cover 39 is a cover part 4 that covers the front operation section 40 located on the 11th side of the refrigerator and the main condenser.
1 and a rear frame portion 42.

The mJ surface operating section 40 is equipped with an operating knob 43 on the front side for controlling the temperature inside the refrigerator, etc., and a suction port 44 is provided on the part facing the upper surface 23a of the freezer compartment door 23. . When forming the suction port 44, the back surface 4.degree.a of the IIR control surface 40 is inclined upward so as to provide a sufficient distance from the freezer compartment door and the L surface 23a.

In addition, a ventilation hole 45 as shown in FIG. 7 is provided on the side surface of the cover part 41.
is provided.

Furthermore, the rear frame portion 42 is formed one step higher than the oil level control portion and a portion of the cover, and the discharge port 4 is formed at the higher portion.
6.47 is provided. In forming the discharge ports 46, 47, the grills 46a, 47 are designed to prevent dust from entering the decorative cover 39 from these portions.
7a is arranged parallel to the ceiling plate at λj. In addition, the discharge II 46 is provided to discharge heat-exchanged air to the front side of the refrigerator, and the discharge II Ill 47 is provided to discharge it to the rear side. It is designed so that even if the discharge port 46 becomes blocked, the performance will not be significantly degraded.

Furthermore, as shown in FIG. 6, this rear frame 42 has the same shape as the back plate 28 at the portion corresponding to the extension of the heat exhaust passage 34 provided in the back plate 28 described above, and has the same shape. The discharge port 47 is not provided in the portion forming the . This is a measure to prevent the exhaust heat air that has passed through the exhaust heat passage formed in the back plate 28 from flowing into the main condenser side. Reference numeral 49 denotes a board serving as an electrical component attached to the rear frame 42 portion. On this board 49 are placed the cities that control the operation of the refrigerator itself. Further, as shown in the figure, this board 49 is attached to the rear of the rear frame and close to the ceiling plate, and is designed so that it cannot be clearly seen from the outside through the outlet grille 47a formed on the rear frame 42. . Furthermore, installing this electrical item in the rear frame means that work such as wiring can be done on the back side of the refrigerator because the compressor etc. are installed at the rear of the machine room, which improves work efficiency ( Service quality) will also improve.

Next, to explain the positional relationship between this decorative cover 39 and the main condenser 38, firstly, the position of the main condenser 38 in the height direction with respect to the decorative cup 39 is as shown in FIG. The space in the height direction created by 39 and the ceiling board 26 is L.
1, the main condenser 38 is located below this L2 dimension. In other words, there is a large gap between the top surface of the main condenser 38 and the back surface of the cover 41,
This portion is used as a passage for warm air that exchanges heat with the main condenser 38. And the area corresponding to this warm air passage (this ventilation 1
145 is provided.

Next, between the positions of χ・1 in the depth direction of the makeup cup・-39
To explain the system, as shown in FIG. 7, the rear end of the main condenser 38 reaches the rear frame 42, and the main condenser artificial vibrator section 48 shown in FIG. (It is arranged so that it is located where it is facing.) (If this main condenser 38 is installed in several stages (this is the main condenser artificial vibe part 48
46.47 provided in the rear frame 42. This is done in consideration of air convection. ) The main ways in which the refrigerator having the above structure is used are as shown in FIGS. 9 and 10. In other words, the one shown in Figure 9 is used with the back side in close contact with a wall, etc., and the one shown in Figure 10 is used with the back side and both sides blocked by walls, shelves, etc. be. Even when used in this manner, in the present invention, the compressor 30, condenser, etc. are sufficiently cooled and the refrigeration cycle exhibits a predetermined capacity. Because 1st O
As shown in the figure, if the refrigerator were to be closed by 1Φ in such a way that the front and ceiling surfaces of the refrigerator were blocked (except for the front and ceiling surfaces), 32 exchanges heat with the air coming in from the bottom and front of the machine room 33, and exhausts the heat to the outside of the room 33 through the exhaust heat 1'' 37 provided on the machine room cover 35. Heat exhaust passage 3 formed in face plate 28
4 and reaches the rear frame 42, from which it is discharged above the refrigerator. On the other hand, the main condenser 38 installed on the second side of the refrigerator is cooled by the refrigerator's oil pressure and air sucked in through an air suction port 44 and a ventilation port 45 provided at a portion corresponding to the upper surface of the freezer compartment. The air that has exchanged heat with the main condenser 38 is exhausted to the outside through discharge ports 46 and 47 provided in the rear frame 42. In the present invention, at this time, the rear frame 42 is partitioned so that the air that has undergone heat exchange with the compressor etc. does not enter the main condenser 38 section.

Next, the function of exhausting heat inside the machine room 33 will be explained. The heat inside the machine room 33 is exhausted through a heat exhaust port 37 provided on an inclined surface of the machine room cover 35. Therefore, it is better for this heat exhaust port 37 to be as large as possible. However, the size of this slit-shaped heat exhaust port 37 is naturally limited in terms of design. Therefore, in the present invention, as shown in FIG. 10, the step of the heat exhaust passage 34 formed by the back plate 28 is formed in a shape that connects from point A to point B, whereas it is formed in a shape that connects point A' to point B. None Take enough slope between A' and -8 to exhaust heat L1 to this part.
37. In other words, when three sides are closed as shown in Figure 1O, the space created by multiplying the area (shaded area) between the machine room cover and the back wall and shelf by the height 11 dimension of the machine room cover, for example. It is ideal to provide a heat exhaust port on this slope that can send sufficient exhaust heat air to the S crtl. By doing so, the air that has undergone heat exchange within the machine room 33 smoothly exits the machine room and is then exhausted to the outside through the heat exhaust passage 34.

As explained above, the present invention comprises a back plate having a substantially "-" cross section with steps formed over the entire length of the side edge to form a heat exhaust passage, and the side edge having an inclined surface facing the main body. and a machine compartment cover having a straight cross section with a heat exhaust port on the inclined surface thereof, forming the back surface of the refrigerator, and the back plate and the surface of the machine compartment cover being located approximately on the same plane. Therefore, it goes without saying that the exterior appearance will not be affected, and the defrost water in the defrost water evaporation tray installed in the machine room and the air that has exchanged heat with the compressor! +, ff can be easily discharged to the outside without providing separate exhaust ducts. Also, if the sloped surface of the machine room cover is formed with a width of about 50 degrees or more from the side edge, the cross-sectional area will be larger than the cross-sectional area of the heat exhaust passage formed on the back plate side, so the defrost water evaporation tray This makes it easier to discharge the humid air that has evaporated the defrosting water inside and the exhaust heat air that has exchanged heat with the compressor and the like.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a refrigerator with a conventional structure, FIG. 2 is an exploded explanatory view of the main part of the refrigerator of FIG. 1, and FIG. 3 is a cutaway perspective view of the main part of the conventional refrigerator. FIG. 4 is a diagram showing the structure of a refrigerator equipped with the present invention, FIG. 5 is an exploded explanatory view of the main part of FIG. 4, and FIG. 6 is a cutaway perspective view of the main part of the refrigerator equipped with the present invention. Figure 7 is a diagram showing the positional relationship between the decorative cover and the main condenser, Figure 8 is an explanatory diagram of the refrigeration cycle piping used in the present invention, Figure 9,
Fig. 0 shows the installation state of the refrigerator equipped with the present invention, Fig. 9 shows the back side, and Fig. 1O shows the state in which three sides excluding the 111th side and the ceiling side are closed. 21... Refrigerator body, 22... Inside, 23... Freezer compartment L11', 24... Refrigerator compartment door, 25... Outer box, 26... Ceiling plate, 27... Side plate, 28... Rear plate, 29... Bottom plate, 30.1 ball shrinking machine, 31... Defrosting water evaporation dish, 32... Drainage condenser, 33...
Machine room, 34...1) i Heat passage, 35... Machine room cover, 36... Inclined surface, 37... Heat exhaust port, 38...
- Main condenser, 39... Decorative cover, 40... Front operation section, 40a... Back side of front operation section 40, 41...
Part of cover, 42... Rear frame, 43... Operation knob, 4
4... Suction port, 45... Ventilation 1.46.47...
・Discharge port, 46a, 47a...discharge log IJ)
48... Main condenser inlet vibe section, 49... Electrical components. Figure 1 Figure 2 Figure 3 Diagram Figure 4

Claims (1)

[Scope of Claims] 1. In a refrigerator in which a compressor, a drainage condenser, and a defrost water evaporation tray are installed in the machine room, and the back is installed close to a wall etc., The back plate has an L-shaped cross section in which steps are formed over the entire length to form a heat exhaust passage, and the side edge is composed of an inclined surface facing the main body, and the inclined surface has a heat exhaust port. 1. A refrigerator, characterized in that a machine compartment cover having a cross section of 0.degree. 2. The air that has passed around the defrost water evaporator mounted on the drainage condenser is discharged outside the machine room via the compressor through the heat exhaust port opened in the machine room cover. A refrigerator according to claim 1, characterized in that: