JPH04186080A - Refrigerator for business use - Google Patents

Abstract

PURPOSE:To enable a front panel to be printed for advertisement by a method wherein a condenser air inlet port is arranged on a device base and an entire assembly of a compressor and a condenser or the like on the device base or the like is covered by a fan duct. CONSTITUTION:An air discharging duct 15 of a cabinet 1 and an air inlet hole of a condensor on a device base 16 are provided. An entire assembly of a compressor 6, condenser 17, fan 8 and fan motor 9 on the device base 16 is covered by a fan duct 18. A condenser 17 is comprised of a plurality of fins 17a and a plurality of tubes 17b, their heights are lower than that of the prior art and the number of steps and rows are changed. On the device base 16, an air inlet port or hole 19 is formed at a lower part of the condensor 17. A condenser partition plate 20 having an upper opening is arranged between the condensor 17 and a fan B. With such an arrangement, a preference characteristic in case of printing an advertisement can be assured and at the same time a warm air flow at a foot part of a person can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a commercial refrigerator having an air intake slit and an air exhaust slit.

BACKGROUND OF THE INVENTION There has been a demand for commercial refrigerators that have high cooling efficiency and high reliability, and in recent years, there has also been a demand for structures that have a high advertising effect and are easy to use. Conventional commercial refrigerators (hereinafter referred to as refrigerators) are listed in the June 1990 catalog published by Matsushita Electric Industrial Co., Ltd.
The configuration shown in the "Refrigerated Showcase J, R Freezer Showcase" published in June and the "Cold Table" of the "Freezers/Refrigerators" dated July 1990 in the catalog published by the company was common.

An example of a conventional refrigerator will be described below with reference to the drawings.

FIG. 6 shows a sectional view of a conventional refrigerator, and FIG. 6 shows an enlarged sectional view of section A in FIG. Further, the arrow indicates the direction of air flow during operation.

In FIGS. 5 and 6, 1 is a cabinet, 2 is a cabinet, a door provided at the front of the vignette 1, and 3 is an evaporator built into the cabinet 1. Cavit 1
There is a machine room 4 at the bottom of the machine room 4, in which a compressor 6, a condenser 7, a fan 8. A fan motor 9 and a fan duct 10 are arranged.

An air intake slit 11 is provided on the front surface of the machine room 4, and an air exhaust slit 12 is provided on the rear surface. Further, an air filter 13 is provided in front of the condenser 7.

The capacitor 7 includes a plurality of fins 7a and a plurality of tubes 7b.
Part of it is covered by Fandaku) 10. Fan 8 is attached to the shaft of fan motor 9.

The operation of the refrigerator configured as above will be explained below.

During operation, the compressor 6 and fan motor 9 operate. When the condenser 7°resor 6 operates, the refrigerant is compressed,
The refrigerant gas becomes a high-temperature, high-pressure refrigerant gas and is supplied to the condenser 7. The high temperature and high pressure refrigerant gas flows through the tube 7b of the condenser 7.
flowing within. On the other hand, as the fan 8 rotates due to the operation of the fan motor 9, air flows into the machine room 4 through the air intake slit 11 at the front of the refrigerator, passes through the air filter 13, and then passes through the fins of the condenser 7. 7a and tube 7b, flows through the fan duct 1o toward the compressor 6, cools the compressor 6, and is discharged through the air discharge slit 12 to the rear of the refrigerator. When air passes through the condenser 7, the heat of the refrigerant flowing in the tube Tb is radiated, the refrigerant is gradually cooled, condensed and liquefied, and when it leaves the condenser 7, it becomes a low-temperature, high-pressure refrigerant liquid.

The low-temperature, high-pressure refrigerant liquid that exits the condenser 7 becomes a low-temperature, low-pressure refrigerant liquid by a pressure reducing device (not shown) such as a capillary tube, and flows into the evaporator lake 3. At this time, the refrigerant liquid evaporates within the evaporator 3. The interior of the cabinet 1 is cooled to remove latent heat of vaporization from the air inside the cabinet 1. The low-pressure refrigerant gas evaporated in the evaporator 3 is sucked into the compressor 6, where it is compressed, becomes high-temperature and high-pressure refrigerant gas, and is supplied to the condenser 7, repeating the refrigerant cycle. In the conventional configuration described above, the air that cools the condenser 7 flows in from the air intake slit 11 at the front of the refrigerator, and when passing through the condenser 7, the temperature increases due to heat exchange with the refrigerant and cooling of the compressor. The air is discharged through the air discharge slit 12 to the rear of the refrigerator.

If dust or floating oil in the air adheres to the condenser 7, the heat exchanger between the air and the condenser will be obstructed and the cooling effect will be reduced. To prevent this, an air filter 13 is provided in front of the condenser 7. be.

Problems to be Solved by the Invention However, in recent years, there has been a demand for a structure that allows printing, such as a silk screen, on the entire outer surface of a refrigerator for advertising purposes. The air exhaust slit 12 has become disadvantageous in this respect. Depending on the product, some products may be sold with the conventional structure but without the air intake slit 11 and used for advertising purposes; in such cases, the amount of air flowing into the condenser 7 Also, the air that first entered the condenser 7 becomes hotter due to heat exchange with the refrigerant in the tube 7b and cooling of the compressor 6, and then flows out, and then flows into the condenser 7 again. An air short circuit phenomenon occurs, and in both cases, the condensation efficiency is impaired and the cooling capacity is reduced. In addition, the cooling effect for extending the life of the compressor 6 is also impaired, which is a disadvantage in terms of reliability. Also air intake slit 11. If the air exhaust slits 12 are both close to the ground, lukewarm air tends to accumulate on the ground due to the air short circuit phenomenon, causing discomfort to people and to consumers. In addition, the air filter 13 is easily clogged by dust and floating objects in the air in a short period of time, and the air intake slit 11 on the front of the refrigerator must be removed when removing the filter for cleaning, making it inconvenient to use. there were.

In view of the above-mentioned problems, the present invention secures printing advantages for advertising, and at the same time, even if the air intake slit on the front of the refrigerator is abolished, the cooling efficiency is not impaired and the reliability of the compressor can be maintained. To provide an easy-to-use refrigerator with good cooling efficiency that can reduce the accumulation of lukewarm air at people's feet.

Furthermore, the present invention provides a refrigerator equipped with an air filter that is reliable and easy to use.

Means for Solving the Problems In order to solve the above problems, (1) the first refrigerator of the present invention provides an air intake hole for the condenser on the cabinet exhaust duct and the unit base, and connects the unit with the fan duct. Compressor, condenser and fan on the base.

The structure covers the entire fan motor.

@) In addition to the first refrigerator of the present invention, the second refrigerator of the present invention is provided with an air filter attachment/detachment opening in the front part of the unit base, and a guide for installing the air filter in the lower part, so that the air filter can be attached/detached. The air filter is installed using a guide.

Effects The present invention has the above-described structure. (1) In the first refrigerator of the present invention, air can be taken into the condenser from the bottom of the machine room, instead of from the front of the machine room as in the conventional case. In addition, the conventional air intake slit on the front of the machine room and the air exhaust slit on the rear can be eliminated, and as a result, superiority in advertising printing can be secured. In addition, the flow of warm air at the feet of the person can be reduced, so that the person using the device does not feel uncomfortable.

C) The second refrigerator of the present invention has the following functions in addition to the functions of the first refrigerator of the present invention.

In other words, the air filter can be deployed on the underside of the refrigerator unit base and has an opening area several times larger than conventional filters, making it less likely to be clogged in the short term by dust or floating oil in the air. As a result of ensuring the amount of ventilation, cooling defects are less likely to occur, and a highly reliable filter can be provided. Furthermore, even if the air filter becomes clogged with dust or floating oil, the air filter can be easily removed and removed from the front of the refrigerator and cleaned without removing the front panel of the machine room, improving usability.

EXAMPLE A refrigerator according to a first example of the present invention will be described below with reference to the drawings. FIG. 1 shows a sectional view of a refrigerator in a first embodiment of the present invention, and FIG. 2 shows an enlarged sectional view of section B in FIG.

Further, arrows indicate the direction of air flow during operation.

In FIGS. 1 and 2, detailed explanations of the same structures as those of the conventional example will be omitted.

16 is an exhaust duct provided on the rear surface of the cabinet 1. 16 is unit based.

On the unit base 16 is a compressor 6° condenser 17. Fan 8. A fan motor 9 is arranged respectively, and these parts are entirely covered with a fan duct 18.

The capacitor 17 consists of a plurality of fins 17a and a plurality of tubes 17b, and is basically the same as the conventional capacitor 7, but in order to reduce the height, the number of stages and columns are changed for structural reasons. . On the unit base 16, an air intake hole 19 is open at the bottom of the condenser 17. Further, a capacitor partition plate 2o having an open top is provided between the capacitor 17 and the fan 8. In addition, on the front side of the machine room 4, there is a front panel 21 made of a flat plate without slits.
is installed.

The operation of the refrigerator configured as described above will be explained, but since the basic principle of cooling is the same as that of the conventional example, the explanation thereof will be omitted.

When the refrigerator is operated, the fan motor 9 operates and the fan 8 rotates, but air enters through the air intake hole 19, passes through the condenser 17, and moves upward between the fan duct 1B and the condenser partition plate 2o. , passes through the opening at the top of the condenser partition plate 20, cools the compressor 6, and is discharged to the rear □ of the unit base 16. The exhausted air then moves upward via the exhaust duct 16 provided on the rear surface of the cabinet 1.
Air is exhausted from the top of the refrigerator to the outside of the refrigerator. Therefore, the refrigerator of the present invention no longer requires the air intake slits on the front and the air exhaust slits on the rear that were required in conventional refrigerators, and a flat front panel 21 without slits can be used.

In addition, all the heat released from the condenser 17 is exhausted to the upper part of the refrigerator via the exhaust duct 15, so the lukewarm air that is experienced in conventional refrigerators accumulates at people's feet, causing discomfort to people. The phenomenon is reduced. Furthermore, the phenomenon in which the condensing effect of the condenser 17 is inhibited due to the accumulation of lukewarm air and the cooling efficiency deteriorates is also improved, and the cooling performance is also improved. In addition, since the compressor 6 is covered by the fan duct 1B, the compressor 6 is effectively exposed to air, which allows the compressor 6 to be cooled better than that of conventional refrigerators, resulting in a longer service life and improved reliability. It will be expensive.

As described above, according to this embodiment, the air intake slit 11 on the front side of the machine compartment 4 and the air exhaust slit 12 on the rear side, which were required in conventional refrigerators, can be eliminated, and the front spring A/21 made of a flat plate can be used. It becomes possible to perform printing such as Nodame screen printing.

Furthermore, the heat emitted from the condenser 17 is discharged through the exhaust duct 15 to the upper part of the refrigerator, thereby reducing the accumulation of lukewarm air at people's feet.

Also, since the so-called air short circuit phenomenon in which warm air that has been discharged from waste flows into the condenser 17 again is eliminated, the condensation efficiency of the condenser 17 is improved compared to conventional refrigerators, and the cooling efficiency is improved. It is. In addition, since the compressor 6 is entirely covered by the fan duct 18, the air coming out from the condenser 17 flows into the compressor 6.
Since the compressor cools the refrigerator better than in conventional refrigerators, it has a long service life and can provide a highly reliable refrigerator.

Next, a refrigerator according to a second embodiment of the present invention will be described with reference to the drawings. FIG. 3 shows a sectional view of a refrigerator according to a second embodiment of the present invention, and FIG. 4 shows an enlarged sectional view of part 0 of FIG. 3.

Further, arrows indicate the direction of air flow during operation.

In FIGS. 3 and 4, detailed explanations of the same structures as those of the conventional example will be omitted. The difference between this embodiment and the first embodiment is that an air filter fitting opening 23 is provided at the front of the unit base 22, and an air filter installation guide 24 is provided at the bottom of the unit base 22.
are provided, and the air filter 26 is attached using these.

The operation of the refrigerator configured as described above will be explained, but since the basic principle of cooling is the same as that of the conventional example, the explanation thereof will be omitted.

When the refrigerator is operated, the fan motor 9 is activated and the fan 8 is rotated. The air passes through the air filter 25,
Air enters through the air intake hole 19, cools the condenser 17, moves upward between the fan duct 18 and the condenser partition plate 2o, passes through the opening at the top of the condenser partition plate 2o, cools the compressor 6, and cools the unit. It is moved to the rear of the base 16 and ejected. The discharged air then moves upward via an exhaust duct 15 provided on the rear surface of the cabinet 1, and is discharged from above the cabinet 1 to the outside of the refrigerator. Therefore, the effect is the same as in the first embodiment.
There are advantages in advertising, reduction in discomfort caused by accumulation of lukewarm air, improvement in cooling performance due to improvement in the condensing efficiency of the condenser 17, and improvement in reliability due to the extension of the life of the compressor 6. Furthermore, since the air filter 25 can be expanded to the lower inner dimension of the unit base 16, an opening area several times larger than that of the conventional air filter 13 can be secured. If the environment in which the refrigerator is installed is poor, in conventional refrigerators, the air filter 13 will become clogged in a short period of time due to dust, floating oil, etc. in the air, reducing the amount of air passing through, which will reduce the cooling efficiency of the condenser 7. This air filter 26 has an opening area several times larger than that of the conventional filter 13.
According to , the wide opening area makes short-term blockages less likely to occur due to dust, floating oil, etc., and as a result of ensuring sufficient ventilation, cooling defects are less likely to occur compared to the conventional filter 13, making it a highly reliable air filter. It becomes a filter. Furthermore, even if the air filter 26 should become clogged with dust, floating oil, etc., the air filter 25 can be easily removed and cleaned from the front of the refrigerator without removing the front spring (v21) of the machine room. Air filter removal port 23.
By providing an air filter installation guide 24, it is easy to use and reliability is improved.

As described above, according to this embodiment, the air intake slit 11 at the front of the refrigerator and the air exhaust slit 12 at the rear, which were required in conventional refrigerators, can be eliminated, and the screen printing for advertising on the front spring /l/21 can be eliminated. It becomes possible to print such as. Furthermore, the heat emitted from the condenser 17 is discharged through the exhaust duct 15 to the upper part of the refrigerator, thereby reducing the accumulation of lukewarm air at the feet of the person, thereby eliminating discomfort for the user. Furthermore, since the so-called air short circuit phenomenon in which lukewarm air that has been discharged at -degrees flows back into the condenser 17 is eliminated, the condensation efficiency of the condenser 17 is improved compared to conventional refrigerators, and the cooling efficiency is improved. It is. In addition, since the compressor 6 is entirely covered by the fan duct 18, the air coming out of the condenser 17 hits the compressor 6 well, and the compressor is cooled better than in conventional refrigerators, resulting in a longer service life and improved reliability. will improve. In addition, the air filter 25 has a larger opening area than conventional ones, making it less likely to be clogged by dust, floating oil, etc., improving reliability, and making it easier to use as it can be easily attached and detached from the front of the refrigerator. It is possible to provide a refrigerator with great benefits such as improved performance.

Effects of the Invention The refrigerator according to claim (1) of the present invention includes a cabinet having an evaporator built therein, a compressor on a unit base, a condenser, and a fan.

It consists of a machine room in which a fan motor and a fan duct are arranged, the cabinet is arranged above or beside the machine room, an exhaust duct is provided in the cabinet, and an air intake hole for the condenser is provided on the unit base. , a compressor on the unit base in the fan duct;
By adopting a structure that covers the entire condenser, fan, and fan motor, ■ The air intake slit at the front of the machine room and the air exhaust slit at the rear, which were required in conventional refrigerators, can be eliminated, and advertising materials can be printed on the front panel. It becomes possible to apply

■ The heat emitted from the condenser is discharged upwards from the refrigerator via the exhaust duct, which reduces the discomfort caused by warm air pooling around people's feet.

■ This eliminates the so-called air short circuit phenomenon in which lukewarm air once discharged from the condenser flows back into the condenser, improving condensation efficiency and cooling efficiency.

■ Since the compressor is entirely covered by a fan duct, the air coming out of the condenser hits the compressor well and cools the compressor, extending its life and improving reliability.

We can provide refrigerators with many benefits such as:

Furthermore, regarding the refrigerator according to claim (2) of the present invention, in addition to the structure of the refrigerator according to claim (1) of the present invention, there is an air filter attachment/detachment port at the front of the unit base and an air filter installation guide at the bottom. By creating a structure in which an air filter is installed using the air filter attachment/removal port and air filter installation guide, ■ an air intake slit in the front of the machine room and an air intake slit in the rear, which were required in conventional refrigerators, can be installed. Air exhaust slits can be eliminated, and advertising can be printed on the front panel.

■゛The heat emitted from the condenser is discharged to the upper part of the refrigerator via the exhaust duct, which reduces the discomfort caused by warm air stagnating at people's feet.

■ This eliminates the so-called air short circuit phenomenon in which lukewarm air once discharged from the condenser flows back into the condenser, improving condensation efficiency and cooling efficiency.

■ Since the compressor is entirely covered by a fan duct, the air coming out of the condenser cools the compressor well, resulting in a longer life and improved reliability.

■ Air filters have a larger opening area, making short-term blockages less likely to occur due to dust or floating oil.
Improved reliability. Moreover, since it can be easily attached and detached from the front of the refrigerator, usability is improved.

We can provide refrigerators with many benefits such as:

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a commercial refrigerator according to a first embodiment of the present invention, FIG. 2 is an enlarged sectional view of section B in FIG. 1, and FIG. Cross-sectional view of a refrigerator,
4 is an enlarged sectional view of part 0 in FIG. 3, FIG. 5 is a sectional view of a conventional commercial refrigerator, and FIG. 6 is an enlarged sectional view of part A in FIG. 6. 1... Cabinet, 3... Evaporator, 4... Machine room, 6... Compressor, 8... Fan, 9... ...Fan motor, 15...Exhaust duct, 16...
・Unit base, 17...Capacitor, 18
...Fan duct, 22...Unit base, 23...Air filter removal port, 2
4... Air filter installation guide, 25...
...Air filter. Name of agent: Patent attorney Akira Okaji and 2 others
〜G ″″′

Claims (2)

[Claims] (1) A cabinet with a built-in evaporator,
It consists of a machine room in which a compressor, a condenser, a fan, a fan motor, and a fan duct are arranged on a unit base, the cabinet is arranged above or beside the machine room, and an exhaust duct is provided on the side of the cabinet,
A commercial refrigerator characterized in that an air intake hole for the condenser is provided on the unit base, and the fan duct covers the entire compressor, condenser, fan, and fan motor on the unit base. (2) Features include an air filter attachment port and an air filter installation guide at the bottom of the unit base, and an air filter installed using the air filter attachment port and air filter installation guide. The commercial refrigerator according to claim 1, wherein: