JP2776629B2 - Commercial refrigerator - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a commercial refrigerator having an air intake slit and an air exhaust slit.

Conventional technology The cooling efficiency of commercial refrigerators has been high,
Although high reliability is demanded, in recent years, there has been a demand for a structure that has a high advertising effect and is easy to use. Conventional commercial refrigerators (hereinafter referred to as refrigerators) are catalogs published by Matsushita Electric Industrial Co., Ltd. May 1990 and June 1990, "Refrigerated showcases" and "Refrigerated showcases" and catalogs published by the company in July 1990. Of the "freezers / refrigerators" attached, the configuration shown in the "cold table" was common.

Hereinafter, an example of a conventional refrigerator will be described with reference to the drawings.

FIG. 5 is a sectional view of a conventional refrigerator, and FIG.
The enlarged sectional view of the A section of the figure is shown. Arrows indicate the direction of air flow during operation.

5 and 6, reference numeral 1 denotes a cabinet, 2 denotes a door provided at the front of the cabinet 1, and 3 denotes an evaporator incorporated in the cabinet 1. A machine room 4 is provided below the cabinet 1, and a compressor 6, a condenser 7, a fan 8, a fan motor 9, and a fan duct 10 are arranged on a unit base 5 in the machine room 4.

An air intake slit 11 is provided at the front of the machine room 4, and an air exhaust slit 12 is provided at the rear. An air filter 13 is provided on the front surface of the condenser 7. The condenser 7 includes a plurality of fins 7a and a plurality of tubes 7b, and a part thereof is covered by a fan duct 10.
The fan 8 is attached to a shaft of a fan motor 9.

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

During operation, the compressor 6 and the fan motor 9 operate. When the compressor 6 operates, the refrigerant is compressed,
A high-temperature and high-pressure refrigerant gas is supplied to the condenser 7. The high-temperature and high-pressure refrigerant gas flows through the tube 7b of the condenser 7. On the other hand, the operation of the fan motor 9 causes the fan 8 to rotate, so that the air flows into the machine room 4 through the air intake slit 11 at the front of the refrigerator, and the air filter 13
And flows between the fins 7a and the tubes 7b of the condenser 7, flows through the fan duct 10 toward the compressor 6, and is discharged from the air discharge slit 12 to the rear of the refrigerator while cooling the compressor 6. . When the air passes through the condenser 7, the heat of the refrigerant flowing in the tube 7b is released, and the refrigerant is gradually cooled and condensed and liquefied. When leaving the condenser 7, the refrigerant becomes a low-temperature and high-pressure refrigerant liquid. The low-temperature and high-pressure refrigerant liquid that has exited the condenser 7 is turned into a low-temperature and low-pressure refrigerant liquid by a decompression device (not shown) such as a capillary tube and flows into the evaporator 3. At this time, the refrigerant liquid evaporates in the evaporator 3, In order to remove latent heat of evaporation from the air in the cabinet 1, the inside of the cabinet 1 is cooled. The low-pressure refrigerant gas evaporated by 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. In the above conventional configuration, the air for cooling the condenser 7 flows 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 to the rear of the refrigerator through the air discharge slit 12. If the dust and floating oil in the air adhere to the condenser 7, the heat exchanger between the air and the condenser is obstructed and the cooling effect is reduced. To prevent this, an air filter 13 is provided on the front of the condenser 7. is there.

However, in recent years, there has been a demand for a structure capable of printing a silk screen or the like on the entire outer surface of the refrigerator for advertisement, and the air intake slit 11 and the air discharge slit 12 of the conventional refrigerator are It is becoming a disadvantage. Depending on the product, the air intake slit 11 may be abolished and the product used for the advertising effect may be sold with the conventional structure, but in such a case, the amount of air flowing into the condenser 7 may be reduced. Or the air once flowing into the condenser 7 flows out of the condenser 7 after the temperature rises due to the heat exchange with the refrigerant in the tube 7b and the cooling of the compressor 6, and then flows into the condenser 7 again. In this case, the condensation efficiency is impaired, and the cooling capacity is reduced. Further, the cooling effect for extending the life of the compressor 6 is also impaired, resulting in a negative reliability. If both the air intake slit 11 and the air exhaust slit 12 are close to the ground, the short-circuiting of the air makes it easy for warm air to accumulate on the ground, causing discomfort to humans and discomfort to consumers. Was something. The air filter 13 is easily clogged by dust and suspended matter 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. Was.

In view of the above problems, the present invention secures superiority in printing for advertising, and at the same time, does not impair the cooling effect even if the air intake slit on the front of the refrigerator is abolished, can maintain the reliability of the compressor, and It is intended to provide a refrigerator having a high cooling efficiency and being easy to use, which can reduce the accumulation of warm air at the feet of the user.

Another object of the present invention is to provide a refrigerator provided with a reliable and easy-to-use air filter.

Means for Solving the Problems In order to solve the above problems, (1) The first refrigerator of the present invention is provided with a discharge duct for a cabinet and an air intake hole for a condenser on a unit base, and the unit is connected to a fan duct by a fan duct. The structure covers the entire compressor, condenser, fan, and fan motor on the base.

(2) In the second refrigerator of the present invention, in addition to the first refrigerator of the present invention, an air filter attaching / detaching port is provided at a front portion of the unit base and an air filter attaching guide is provided at a lower portion, and the air filter attaching / detaching is provided. The air filter is installed using the mouth and the air filter installation guide.

Operation According to the present invention having the above-described structure, (1) In the first refrigerator of the present invention, it is possible to take in the air of the condenser from below the machine room, not from the front of the conventional machine room. In addition, the conventional air intake slit at the front of the machine room and the air exhaust slit at the rear can be eliminated, so that superiority in advertising printing can be secured. Also, the flow of warm air at the feet of the person can be reduced, so that the user does not feel uncomfortable.

(2) In the second refrigerator of the present invention, the following operation is added in addition to the operation of the first refrigerator of the present invention. In other words, the air filter can be deployed on the entire lower surface of the unit base of the refrigerator, and the opening area several times larger than that of the conventional filter can be secured. As a result, a cooling failure is less likely to occur, and a highly reliable filter can be provided. Further, even when the air filter is blocked by dust and floating oil, the air filter can be easily attached and detached from the front of the refrigerator without removing the front panel of the machine room, and the air filter can be cleaned, thereby improving usability.

Embodiment A refrigerator according to a first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of a refrigerator according to a first embodiment of the present invention, and FIG. 2 is an enlarged sectional view of a portion B in FIG. Arrows indicate the direction of air flow during operation. 1 and 2, the detailed description of the same configuration as the conventional example is omitted.

Reference numeral 15 denotes an exhaust duct provided on the rear surface of the cabinet 1. 16 is a unit base.

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

The condenser 17 has a plurality of fins 17a and a plurality of tubes 17b.
, And is basically the same as the conventional capacitor 7, but is represented by changing the number of stages and the number of columns in order to reduce the height. Capacitor on unit base 16
At the bottom of 17 is an air intake 19. Between the condenser 17 and the fan 8, there is provided a condenser partition plate 20 having an open top. A front panel 21 made of a flat plate without a slit is attached to the front of the machine room 4.

The operation of the refrigerator configured as described above will be described, but the basic principle of cooling is the same as that of the conventional example, and the description is 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, passes through the fan duct 18 and the condenser partition plate 20.
Through the opening in the upper part of the condenser partition plate 20 to cool the compressor 6 and to cool the unit base 16.
Is discharged to the rear of The discharged air then moves upward via an exhaust duct 15 provided on the rear surface of the cabinet 1 and is exhausted from above the cabinet 1 to outside the refrigerator. Therefore, the front air intake slit and the rear air discharge slit required in the conventional refrigerator are no longer required in the refrigerator of the present invention, and a flat front panel 21 having no slit can be used. In addition, since all the heat released from the condenser 17 is discharged to the upper part of the refrigerator through the exhaust duct 15, the warm air experienced in the conventional refrigerator stays at the feet of a person, causing discomfort to the person. The phenomenon is reduced.
Similarly, the phenomenon that the condensation effect of the condenser 17 is hindered by the accumulation of warm air and the cooling efficiency is deteriorated is also improved, and the cooling performance is also improved. Also compressor 6
Is covered with the fan duct 18 so that the compressor 6
, The compressor 6 is cooled better than that of a conventional refrigerator, so that the life is maintained longer and the compressor 6 is more reliable.

As described above, according to the present embodiment, the air intake slit 11 on the front side and the air discharge slit 12 on the rear side of the machine room 4 required in the conventional refrigerator can be eliminated, and the front panel made of a flat plate can be eliminated.
It becomes possible to perform printing such as screen printing for advertising on 21. Further, the heat released from the condenser 17 is discharged to the upper part of the refrigerator through the discharge duct 15, so that the accumulation of warm air at the feet of the person is reduced. Also, since the so-called short-circuiting phenomenon of air, in which warm air once discharged flows into the condenser 17 again, is eliminated, the condensation efficiency of the condenser 17 is improved and the cooling efficiency is improved as compared with the conventional refrigerator. Also, since the compressor 6 is entirely covered by the fan duct 18, the condenser 6
The air coming out of 17 hits the compressor 6 well, and the compressor is cooled better than the conventional refrigerator, so that the life is extended and a highly reliable refrigerator can be provided.

Next, a refrigerator according to a second embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a sectional view of a refrigerator according to a second embodiment of the present invention, and FIG.
The enlarged sectional view of the C section of the figure is shown. Arrows indicate the direction of air flow during operation. 3 and 4, detailed description of the same configuration as the conventional example is omitted. This embodiment is different from the first embodiment in that an air filter attachment / detachment port 23 is provided at the front of the unit base 22 and an air filter attachment guide 24 is provided at the lower part. Is installed.

The operation of the refrigerator configured as described above will be described, but the basic principle of cooling is the same as that of the conventional example, and the description is omitted.

When the refrigerator is operated, the fan motor 9 operates and the fan 8 rotates. The air passes through the air filter 25,
It enters through the air inlet 19, cools the condenser 17, moves upward between the fan duct 18 and the condenser partition 20, passes through the upper opening of the condenser partition 20, cools the compressor 6, and cools the unit base. Discharged to move behind 16. The discharged air then moves upward through 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. Accordingly, as in the first embodiment, as in the first embodiment, the merits in advertising, the merit of reducing discomfort caused by the accumulation of warm air, the improvement in cooling performance by improving the condensation efficiency of the condenser 17, and the life of the compressor 6 The reliability is improved by increasing the length. Further, since the air filter 25 can be deployed to the same inner size as the lower part of the unit base 16, an opening area several times larger than the opening area of the conventional air filter 13 can be secured. When the environment in which the refrigerator is installed is poor, in the conventional refrigerator, dust in the air, floating oil, and the like cause the air filter 13 to be clogged in a short period of time, reducing the amount of air passing therethrough. Damage may occur due to insufficient cooling of the high-temperature and high-pressure refrigerant gas discharged from the compressor 6 due to insufficient liquefaction. However, the present air filter 25 having an opening area several times larger than that of the conventional filter 13 is required. According to the large opening area, short-term blockage due to dust, floating oil, etc. is unlikely to occur, and the amount of ventilation is also secured. As a result, poor cooling is less likely to occur compared to the conventional filter 13 and a highly reliable air filter. Becomes Also, if the air filter 25 is dusty,
Even if it is blocked by floating oil, etc., the air filter 25 can be easily attached and detached from the front of the refrigerator without removing the front panel 21 of the machine room, so that the air filter can be easily cleaned. Considering the provision of 24, it is easy to use and improves reliability.

As described above, according to the present embodiment, the air intake slit 11 on the front of the refrigerator and the air exhaust slit 12 on the rear required for the conventional refrigerator can be eliminated, and printing such as screen printing for advertising on the front panel 21 can be omitted. Can be applied. In addition, heat released from the condenser 17 is discharged to the refrigerator through the discharge duct 15, so that stagnation of warm air at the feet of a person is reduced, and discomfort to the user is eliminated. In addition, the warm air once exhausted again
As a result, the so-called short-circuit phenomenon of air that flows into the refrigerator is eliminated, so that the condensation efficiency of the condenser 17 is improved and the cooling efficiency is improved as compared with the conventional refrigerator. Further, 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 the conventional refrigerator, so that the life is extended and the reliability is improved. Is improved. In addition, the air filter 25 has a larger opening area than the conventional one, so that it is less likely to be blocked by dust, floating oil, etc., improving reliability, and being easy to attach and detach from the front of the refrigerator, thus being easy to use. It is possible to provide a refrigerator with great advantages such as improvement.

The refrigerator according to claim 1 of the present invention comprises a cabinet having a built-in evaporator therein, and a machine room in which a compressor, a condenser, a fan, a fan motor, and a fan duct are arranged on a unit base. A cabinet is arranged above or beside the machine room, an exhaust duct is provided in the cabinet, an air intake hole for the condenser is provided on the unit base, and the compressor, condenser,
By adopting a structure that covers the entire fan and fan motor, the air intake slit at the front of the machine room and the air exhaust slit at the rear required for the conventional refrigerator can be eliminated, and the front panel is printed for advertising. It becomes possible.

The heat released from the condenser is discharged to the upper part of the refrigerator via the exhaust duct, so that the discomfort that warm air stays at the feet of a person is reduced.

The so-called short-circuit phenomenon of air, in which warm air once discharged from the condenser flows into the condenser again, is eliminated, so that the condensation efficiency is improved and the cooling efficiency is improved.

Since the compressor is entirely covered by the fan duct, the air coming out of the condenser hits the compressor well and cools the compressor, so that the life is extended and the reliability is improved.

Refrigerators with high merit can be provided.

The refrigerator according to claim 2 of the present invention has the same structure as the refrigerator according to claim 1 of the present invention, and further includes an air filter opening at the front of the unit base and an air filter mounting guide at the bottom. By installing the air filter using the air filter opening / closing port and the air filter installation guide, the air intake slit in the front of the machine room and the air The slit can be eliminated and the front panel can be printed for advertising.

The heat released from the condenser is discharged to the upper part of the refrigerator via the exhaust duct, so that the discomfort that warm air stays at the feet of a person is reduced.

The so-called short-circuit phenomenon of air, in which warm air once discharged from the condenser flows into the condenser again, is eliminated, so that the condensation efficiency is improved and the cooling efficiency is improved.

Since the compressor is entirely covered by the fan duct, the air coming out of the condenser hits the compressor well and cools the compressor, so that the life is extended and the reliability is improved.

Since the air filter has a large opening area, short-term blockage due to dust and floating oil is unlikely to occur.
Reliability is improved. In addition, since it can be easily attached and detached from the front of the refrigerator, usability is improved.

Refrigerators with high merit can be provided.

[Brief description of the drawings]

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 a portion B in FIG. 1, and FIG. 3 is a commercial refrigerator according to a second embodiment of the present invention. Sectional view of a refrigerator,
4 is an enlarged sectional view of a part C in FIG. 3, FIG. 5 is a sectional view of a conventional commercial refrigerator, and FIG. 6 is an enlarged sectional view of a part A in FIG. 1 ... cabinet, 3 ... evaporator, 4 ... machine room, 6 ... compressor, 8 ... fan, 9 ... fan motor, 15 ... exhaust duct, 16 ... unit base,
17 ... Condenser, 18 ... Fan duct, 22 ... Unit base, 23 ... Air filter inlet / outlet, 24 ... Air filter mounting guide, 25 ... Air filter.

Claims (2)

(57) [Claims] 1. A cabinet having a built-in evaporator therein, and a compressor, a condenser,
A machine room in which a fan, a fan motor and a fan duct are arranged, wherein the cabinet is arranged above or beside the machine room, an exhaust duct is provided on a side surface of the cabinet, and air of the condenser is provided on the unit base. A commercial refrigerator, wherein an intake hole is provided, and the fan duct entirely covers the compressor, condenser, fan, and fan motor on the unit base. 2. An air filter attaching / detaching port is provided at a front portion of a unit base, and an air filter attaching guide is provided at a lower portion, and an air filter is attached using the air filter attaching / detaching port and the air filter attaching guide. The commercial refrigerator according to claim 1, wherein: