JPH1073366A - Cooling storage cabinet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the evaporating efficiency of drain water by a constitution wherein an evaporating member, against which drain water is sprayed, is pro vided and the drain water, dropped from the evaporating member, is reserved in a drain water pan while the drain water is sprayed against the evaporating member again by a pump. SOLUTION: Drain water drops into a spray water pan 36 through a draining pipe 48. The drain water, dropped into the spray water pan 36, drops through water spray holes 36a and is absorbed by an evaporating member 41, then, drops from the evaporating member and flows into a drain water pan 42. The evaporating member 41 is contacted directly or indirectly with a pipeline 14 for heating, through which high-temperature refrigerant flows, whereby the drain is heated by the pipeline 14 for heating and the evaporation of the drain water can be promoted. The drain water, reserved in the drain pan 42, is pumped up by a pump 44 and is supplied again into the spray water pan 36 through a pump-up pipe 45. Then, the water drops through the spray water holes 36a and is sprayed on the evaporating member 41. The drain water is evaporated while being circulated in such a manner.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerated storage such as a refrigerator or a refrigerated showcase for processing drain water generated in a cooler.

[0002]

2. Description of the Related Art Conventionally, a cooling storage of this type is described in, for example, Japanese Patent Publication No. 52-22711 (F25D21 / 14) and has a structure as shown in FIG.
4A and 4B are explanatory diagrams of a machine room of a conventional cooling storage, wherein FIG. 4A is a plan view, and FIG. 4B is a front view in a state where a front panel is removed.

[0003] In a machine room 01 of a cooling storage, a condenser 02 is arranged on the near side, a condenser blower 03 is arranged behind the condenser 02, and a compressor 04 is arranged behind the condenser. An evaporating dish 07 and a draining dish 08 are arranged on the side of the condenser 02 and the compressor 04. Drain water such as defrost water from the cooler that cools the storage room of the cooling storage or dew condensation water generated in the storage room flows into the evaporating dish 07,
It is stored. The accumulated drain water evaporates,
The air is blown out of the machine room 01 by being guided by the flow of the air blown by the condenser blower 03.

If the amount of drain water flowing into the evaporating dish 07 is larger than the amount of drain water evaporating from the evaporating dish 07, the drain water gradually accumulates in the evaporating dish 07, and finally the overflow pipe 014 and drain pan 0
Drained to 8. When drain water accumulates in the drain tray 08,
The drain tray 08 is removed from the machine room 01 and discarded as appropriate.

[0005]

By the way, when the temperature is high and humid in summer or the like, a large amount of drain water flows into the evaporating dish 07, passes through the overflow pipe 014, and flows into the evaporating dish 07.
8 is flowing. Therefore, it is necessary to manually drain the drain water accumulated in the drain tray 08 once or twice a day, which is troublesome.

Accordingly, Japanese Utility Model Laid-Open Publication No. 1-151185 (F25D21 / 14) discloses an apparatus in which an evaporating dish is provided with an evaporating cloth in order to increase the amount of evaporation of drain water. Are sprayed on the evaporating cloth when flowing into the evaporating dish. However, the drain water that has flowed down into the evaporating dish is merely sucked into the evaporating cloth by a capillary phenomenon, and the amount of drain water evaporating from the evaporating cloth is small. .

[0007] In the conventional cooling storage, the flow of air generated by the condenser blower 03 is blown to the compressor 04 after cooling the condenser 02. And
During the cooling of the condenser 02, the air is warmed up and the temperature is rising. Therefore, warm air is blown to the compressor 04, and the efficiency of cooling the compressor 04 is low.

[0008] The present invention has been made to solve the above problems, and has as its object to provide a cooling storage having a high ability to evaporate drain water. Further, it is a secondary object to provide a cooling storage that can efficiently cool the compressor.

[0009]

SUMMARY OF THE INVENTION A cooling storage (1) of the present invention has a storage room (4) for storing articles, a compressor (12) for compressing refrigerant, and a refrigerant discharged from the compressor. There is provided a condenser (15) for cooling, and a refrigeration cycle including a cooler (11) for cooling the storage chamber with the refrigerant flowing from the condenser. In order to achieve the above object, an evaporator (41) to which the drain water generated in the cooler is sprinkled, a drain water tray (42) arranged below the evaporator, and a drain water tray A pump (44) for sucking and discharging the drain water of the above, and a water spray device (36) for spraying the drain water from the pump to the evaporating material.

In some cases, the condenser, the evaporating material, and the compressor are sequentially arranged from the upstream to the downstream of the flow of air generated by the blower for the condenser (28).

Further, the refrigerant pipe (14) from the compressor to the condenser may be in contact with the evaporating material.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a cooling storage according to the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of a cooling storage according to the present invention. 2A and 2B are explanatory views of the machine room with the front panel removed, and FIG. 2A is a sectional view and FIG. 2B is a plan view. FIG. 3 is a refrigerant circuit diagram of a refrigeration cycle of the cooling storage of FIG.

A display room 4 as a storage room having a plurality of display shelves 3 is disposed above the refrigerated open showcase 1 as a cooling storage, and a machine room 7 is disposed below the display room 4. Have been. The front opening of this machine room 7
It is openably and closably covered by a front panel 8. A gap is formed between the lower end of the front panel 8 and the machine room 7, and air can flow into the machine room 7 from this gap.

The cooler 11 for cooling the display room 4 includes:
The refrigeration cycle shown in FIG. 3 is configured. In FIG. 3, the rotary compressor 12 compresses a gaseous refrigerant and converts the gaseous refrigerant into a high-temperature high-pressure refrigerant of about 70 ° C. to 80 ° C. and discharges it from the discharge port 12a. The high-temperature and high-pressure refrigerant flows through the heating pipe 14, and then flows into, for example, a plate-fin type air-cooled condenser 15, where it is air-cooled and its temperature is reduced. Next, it flows into the cooler 11 in a liquefied state via the dryer 17 and the capillary tube 18. In the cooler 11, the refrigerant evaporates to take away the surrounding heat and cool the surrounding air. The cooled air is blown into the display room 4 by a blower for a cooler (not shown). Thus, the cooler 11 of the refrigeration cycle cools the display room 4. The refrigerant vaporized in the cooler 11 is sucked into the compressor 12 again via the accumulator 21 and the check valve 22.

In FIG. 2, a condenser 15, a drain water treatment device 26, a condenser blower 28 and a compressor 12 are arranged in the machine room 7 in order from the front side of the showcase 1, that is, from the near side to the back side. Is arranged.

The condenser 15 is provided in the machine room 7 of the showcase 1.
Are arranged at an interval from the floor surface 7a of the
A space 31 is formed between the lower end of 5 and the floor surface 7a. A sprinkling tray 36 as a sprinkling device is provided at an upper portion of the drain water treatment device 26 disposed on the back side of the condenser 15. The left and right lateral widths of the watering tray 36 are substantially equal to the left and right lateral widths of the condenser 15, and a number of watering holes 36a are formed at the bottom of the watering tray 36.

Below the watering tray 36, a heating pipe 14, which is a refrigerant pipe, extends from the left side to the right side, and then bends approximately 180 ° downward on the back side, and extends from the right side to the left side. Then, it is bent approximately 180 degrees toward the lower side on the near side, and extends from the left side to the right side. Both ends of the heating pipe 14 are supported by a pair of left and right support plates 38. Then, a mesh-shaped evaporating material 41 such as a cloth or a net is hung over the meandering heating pipe 14 and undulates and hangs down.
The drain water plate 4 disposed below the evaporating material 41
2 extends to a space 31 below the condenser 15;
The drain water tray 42 can be grasped and pulled out from the near side of the condenser 15.

A part of the right side of the drain water dish 42 is
A pump installation part 42a is formed to swell to the right side, and a pump 44 is provided in the pump installation part 42a. When the pump 44 operates, the drain water plate 4
The drain water of No. 2 is drawn up through the watering tray 3 through the pumping pipe 45.
Pumped to 6. Thus, the drain water treatment device 2
Reference numeral 6 denotes a watering tray 36, a heating pipe 14, an evaporator 41, a drain water tray 42, a pump 44, a pumping pipe 45, and the like.

The heat insulating wall 4 which is the ceiling of the machine room 7
7 is provided with a drain pipe 48, and drain water such as defrost water of the cooler 11 and dew condensation water of the display room 4 is supplied to the drain pipe 4.
8 and the drain pipe 4
It is led to the machine room 7 through 8. The drain water guided to the machine room 7 falls into the watering tray 36 of the drain water treatment device 26.

In the thus constructed showcase 1, when drain water such as defrost water in the cooler 11 and dew water in the display room 4 is generated, the drain water passes through the drain pipe 48 and the watering tray 36. To fall. The drain water that has fallen into the watering tray 36 falls downward from the watering hole 36a, is absorbed by the evaporating material 41, flows downward, and falls.
Flows into. The evaporating material 41 is in direct or indirect contact with the heating pipe 14 through which the high-temperature refrigerant flows, and is heated by the heating pipe 14 to promote the evaporation of the drain water. Then, the drain water collected in the drain water tray 42 is sucked up by the pump 44, supplied again to the watering tray 36 through the pumping pipe 45, and supplied to the watering hole 36.
The water drops downward from a and is sprayed on the evaporating material 41. In this manner, the pump 44 is operated until the drain water in the drain water tray 42 is exhausted, and the drain water evaporates while circulating. In this way, the drain water is treated by evaporation, but the amount of drain water generated,
The amount of evaporation of the drain water becomes larger than that of the drain water
When the drain water exceeds a predetermined amount, the drain water tray 42 can be dragged toward the near side of the condenser 15 and the drain water of the drain water tray 42 can be discarded to a drain port or the like.

The condenser blower 28 sucks air from the front of the machine room 7, and this air is supplied to the condenser 15.
After the air is cooled, the air passes through the evaporator 41 of the drain water treatment device 26 and is exhausted to the outside from the rear surface of the machine room 7 while the compressor 12 is air-cooled. By the way, when the condenser 15 is air-cooled, the air is heated on the contrary and the temperature rises. The warmed air passes while hitting the evaporator 41 of the drain water treatment device 26 and promotes the evaporation of the drain water supplied to the evaporator 41. In addition, when the drain water evaporates, the drain water removes heat of vaporization from the surroundings, and the temperature of the surrounding air, the evaporating material 41 and the heating pipe 14 decreases.
Then, since the air with the lowered temperature is blown into the machine room 7 and the compressor 12, the compressor 12 is efficiently cooled by the air, and the desired performance can be exhibited. It is possible to prevent the internal temperature from rising.

In the summertime when the temperature is high, the refrigeration cycle must be operated at full capacity, and the capacity of the condenser 15 may be limited. However, the condenser 15
In the summer months, when the capacity of the condenser 15 is often insufficient, a large amount of drain water is generated, and the drain water sufficiently cools the refrigerant in the heating pipe 14, so that the capacity of the condenser 15 may be insufficient. Decrease. On the other hand, in winter when the temperature is low, the generation of drain water is small,
It is rare that the refrigerant in the inside is cooled more than necessary by the drain water.

As described above, in the embodiment, since the drain water treatment device 26 such as the evaporating material 41 is provided on the back side of the condenser 15, the condenser 15 is widely arranged in the horizontal direction, that is, in the left and right direction. can do. Therefore, the air cooling efficiency of the condenser 15 is improved, and the stagnation of the air in the machine room 7 is reduced.

Since a space 31 for taking out a drain water tray is formed between the condenser 15 and the floor surface 7a of the machine room 7, the drain water treatment device 26
, The drain water tray 42 can be easily taken out.

Since the evaporating material 41 is arranged so as to undulate over the meandering heating pipe 14, the blower 28 for the condenser 28 is compared with the case where the evaporating material 41 hangs vertically. Evaporating material 41 which corresponds to the flow of air where
Can be increased. As a result, the drain water evaporation ability can be improved.

The embodiments of the present invention have been described in detail above.
The present invention is not limited to the above embodiment,
Within the gist of the present invention described in the claims,
Various changes can be made. Modification examples of the present invention are exemplified below. (1) In the embodiment, the cooling storage is a refrigerated open showcase, but may be another cooling storage, for example, a freezer or a cooling storage provided with a heat insulating door.

(2) In the embodiment, the evaporator 41
Is heated by a heating pipe 14 from the compressor 12, but may be heated by another heater, for example, an electric heating sheath heater. (3) It is sufficient that at least the drain water generated in the cooler flows into the drain water treatment device 26, and the drain water generated in another place, for example, a storage room or the like can flow. (4) In the embodiment, although the drain water of the watering tray 36 is sprayed from the watering holes 36a, the watering tray 36 is made of a material having permeability, such as a nonwoven fabric, and
It is also possible to sprinkle water from the entire bottom of 6.

[0028]

According to the first aspect of the present invention, the drain water that has fallen from the evaporating material is collected in the drain water dish, and the drain water collected in the drain water dish is sprayed again on the evaporating material by the pump. Therefore, the drain water can be sufficiently attached to the evaporating material, and the evaporation efficiency of the drain water is improved. Accordingly, the drain water treatment capacity is increased, and it is not necessary to frequently drain the drain water from the drain water tray as in the related art, and the management of the cooling storage can be greatly simplified.

According to the second aspect of the present invention, the condenser, the evaporating material, and the compressor are sequentially arranged from the upstream to the downstream of the flow of the air generated by the blower for the condenser. The air-cooled air is once heated and heated by the condenser, but is cooled by the evaporation of the drain water as the evaporating material.
Then, since the air cooled in the evaporating material hits the compressor and air-cools the compressor, the temperature of the compressor can be efficiently reduced. Therefore, the temperature of the lubricating oil in the compressor becomes high and the lubrication performance and the quality are reduced. As a result, the compressor can exhibit expected performance.

According to the third aspect of the present invention, since the refrigerant pipe from the compressor to the condenser is in contact with the evaporator, the evaporator is heated by the high-temperature refrigerant flowing through the refrigerant pipe, The evaporation of the drain water adhering to the evaporator is promoted. Further, the refrigerant in the refrigerant pipe is cooled by the heat of vaporization when the drain water evaporates, so that the capacity of the condenser can be complemented. As a result, even when a load is applied to the refrigeration cycle in summer or the like, the shortage of the capacity of the condenser is reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a cooling storage according to the present invention.

FIGS. 2A and 2B are explanatory views of a machine room with a front panel removed, in which FIG. 2A is a cross-sectional view and FIG. 2B is a plan view.

FIG. 3 is a refrigerant circuit diagram of a refrigeration cycle of the cooling storage of FIG. 1;

FIG. 4 is an explanatory view of a machine room of a conventional cooling storage,
(A) is a top view, (b) is a front view in the state where the front panel was removed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Refrigeration open showcase (cooling storage) 4 Display room (storage room) 11 Cooler 12 Compressor 14 Heating pipe (refrigerant pipe) 15 Condenser 28 Condenser blower 36 Sprinkler dish (sprinkler device) 41 Evaporating material 42 Drain Water tray 44 pump

Claims (3)

[Claims] 1. A storage room in which articles are stored, a compressor for compressing refrigerant, a condenser for cooling refrigerant discharged from the compressor, and a cooler for cooling the storage room with refrigerant flowing from the condenser. A cooling storage provided with a refrigeration cycle comprising: an evaporator on which drain water generated by the cooler is sprinkled; a drain water tray disposed below the evaporator; A cooling storage, comprising: a pump that sucks and discharges drain water from a plate; and a water spray device that sprays drain water from the pump onto an evaporating material. 2. A storage room in which articles are stored, a compressor for compressing refrigerant, a condenser for cooling refrigerant discharged from the compressor, and a cooler for cooling the storage room with refrigerant flowing from the condenser. In a cooling storage provided with a refrigeration cycle comprising: and a condenser blower for air-cooling the condenser, an evaporator through which drain water generated by the cooler is sprinkled is provided; A cooling storage, wherein an evaporating material and a compressor are sequentially arranged from upstream to downstream of an air flow generated by the condenser blower. 3. A storage room for storing articles, a compressor for compressing refrigerant, a condenser for cooling refrigerant discharged from the compressor, and a cooler for cooling the storage room with refrigerant flowing from the condenser. A cooling storage provided with a refrigeration cycle comprising: an evaporator through which drain water generated by the cooler is sprinkled; and a refrigerant pipe from the compressor to the condenser is provided with the evaporator. Cooling storage, characterized by being in contact with the material.