JPS621193B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an invention in which heat from a compressor and a wire condenser is discharged to the outside from the upper rear surface of a refrigerator by utilizing a chimney effect without using a blower.

As a means of reducing the depth (when installed) of a refrigerator or as a means of improving the rear design, the compressor and condenser (conventionally installed exposed at the rear of the refrigerator) are generally housed in the machine compartment, and these compressor and condenser are There are many types of refrigerators on the market that use a blower to forcibly radiate heat from the refrigerator and condenser to the outside. Also, recently, refrigerators that use the back plate of a refrigerator as a condenser and have an improved design for that part have also come on the market. However, the above-mentioned type of refrigerator that uses a blower to forcibly emit heat to the outside has the disadvantage that not only does the cost of installing the blower increase, but the power consumption goes back by operating the blower. . In addition, for the latter type of refrigerator where only the condenser serves as the back plate, the design of that part is improved, but the machine compartment where the compressor is housed is completely visible from the back, so the back design is It's not like the design of other refrigerator surfaces has improved. Furthermore, in the case of this type of refrigerator, the back plate of the refrigerator that serves as the condenser and the installation area must be installed with a space between it and the wall so as not to block the heat radiation of the previous condenser, so it is installed side by side. There was a defect in which items could be dropped from the sink or the like into the space formed between the back of the refrigerator and the wall.

In order to improve these defects, the present invention installs a cover plate over almost the entire length of the refrigerator to form a chimney between it and the back plate of the refrigerator, and transfers the heat from the compressor and condenser installed in the machine room to the chimney. In addition, heat is radiated outside by natural convection without using a blower, and this cover plate can be attached closely to the back wall, etc., to obtain an inexpensive refrigerator. .

The details of the present invention will be described below with reference to an embodiment shown in the drawings. Reference numeral 1 denotes a refrigerator body. Machine room 7 that stores
is formed. Reference numeral 9 denotes a door that closes the front opening of the chamber interior 8 formed by the inner box 4. Reference numeral 10 denotes a cover plate that is attached to the back plate 2a of the refrigerator with a slight interval (30 to 70 mm) therebetween. As shown in FIG. 1, this cover plate 10 is provided over the entire length of the refrigerator body and also covers the machine compartment 7. That is, this cover plate 10 has a chimney 11 between it and the refrigerator back plate 2a.
It forms the 12 is a decorative frame having a discharge port 13 attached to the upper end of the chimney 11. This decorative frame 12 also has a handle 14.
Also, it is very convenient to use the handle 14 when attaching the decorative frame 12 to the refrigerator body 1.

15 is a base forming the lower surface of the machine room 7. The lower end of the cover plate 10 is in contact with the base 15 to communicate the machine room 7 and the chimney 11. 16
is a wire capacitor provided on the base 15. All of these are installed in the machine room 7 as shown in the figure, and the compressor 5 is installed in the chimney 11.
The wire condenser 17 is installed facing the air suction port. 19
is a machine room cover that covers the front side of the machine room 7. Reference numeral 20 denotes a defrost water receiver (not shown in the figure, but it is a defrost water receiver used when frost adhering to the cooler is melted). Inside this defrost water receiver 20, there is a condenser 17 as shown in FIG. A part of the defrost water is always located and forcibly evaporates the defrosting water. 21 is a leg. The height of the legs 21 is approximately 20 to 50 mm, and provides a perfect distance between the lower surface of the base 15 and the floor surface when the refrigerator is installed. Reference numeral 22 denotes a fixture, and by providing this fixture 22 in a proper position, the cover plate can be attached as shown in FIG. 2, and the cover plate (usually a thin iron plate) can be prevented from becoming bent.

Heat exchange between the condenser and compressor of the refrigerator having such a configuration and outside air is achieved by first sufficiently exchanging heat with the condenser 17 by the air that enters approximately perpendicularly to the wire condenser 17 from the suction port 16 on the bottom surface of the condenser 17; Next, the temperature of the condenser 17 leading to the compressor 5 section is normally 40 to 50 degrees Celsius, so the temperature of the compressor 5 is around 70 degrees Celsius to 80 degrees Celsius.
It further exchanges heat and becomes lighter and rises inside the chimney 11. At this time, the chimney 11 serves to collect high-temperature air that has passed through the condenser 17 and compressor 5. Due to the natural convection that occurs in this way, this refrigerator achieves the same effect as conventional refrigerators that use a blower to dissipate heat. Reference numeral 23 denotes a drive motor, which is attached to the back of the refrigerator, and its drive shaft protrudes into the refrigerator. 24 is a blower that forcibly circulates the cold air inside the refrigerator, 25 is a water shield that is usually made by itself, and its tip 2
5a protrudes from the drive motor 23 toward the cover plate side.

Therefore, even if water were to enter the drive motor from the discharge port of the decorative frame 12, the water would be blocked by this water shield and would not come into contact with the drive motor.

The present invention provides a machine room provided in a back part of a refrigerator, a cover plate provided in the back part to cover the machine room and the back part, and a cover plate formed between the cover plate and the back part. A chimney that opens at the top of the refrigerator,
In a refrigerator comprising a drive motor for internal cold air circulation provided inside the chimney, a water-shielding member is provided on the back surface, and the water-shielding member extends from the drive motor to the cover plate side. Since the refrigerator is protruding, even if the top surface of the refrigerator is used as a table surface and water is accidentally spilled into the chimney, water will not enter the drive motor because of the water-repellent member provided. Moreover, since this water shield member is inclined downward, water is always guided downward, so that it is possible to reliably prevent water from entering the drive motor.

Therefore, it is possible to prevent insufficient cooling due to the drive motor being damaged by water and the circulation of cold air by the fan being stopped.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a refrigerator equipped with the present invention as seen from the back side, FIG. 2 is a longitudinal sectional view of FIG. 1, and FIG. 3 is a plan view of the machine compartment of the refrigerator equipped with the present invention. . 1...Refrigerator body, 2...Outer box, 3...Foam insulation material, 4...Inner box, 5...Compressor, 7...Machine room, 8...Inside the refrigerator, 9...Door, 10... ...cover plate, 11
... Chimney, 12 ... Decorative frame, 13 ... Outlet, 1
4...Handle, 15...Base, 16...Suction port,
17...Wire condenser, 19...Machine room cover, 20...Defrost water tray, 23...Drive motor, 25...Water guard.

Claims (1)

[Claims] 1. A machine room provided on the back side of the refrigerator, a cover plate provided on the back side to cover the machine room and the back side, and a top surface of the refrigerator formed between the cover plate and the back side. In a refrigerator comprising a chimney that opens at the bottom, and a drive motor for circulating cold air inside the refrigerator provided inside the chimney, a water shield member is provided on the back part, and the water shield member is connected to the drive motor. A refrigerator characterized by protruding toward the cover plate side.