JP2002048458A - Cooling storage compartment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooling storage compartment which can improve the evaporation efficiency of an evaporating dish. SOLUTION: This cooling storage compartment is constituted in such a way that a storage chamber 5 is constituted in a heat insulation box 2 and the inside of the chamber 5 is cooled by means of a cooler 34. In addition, an equipment compartment 31 is constituted under the box 2 and a compressor 37 and a condenser 35 both of which constitute a refrigerant circuit together with the cooler 34 and an evaporating dish 40, a blower 36 for condenser, the evaporating dish 40 which receives drain water from the cooler 34, and so on., are set up in the compartment 31. In this cold storage compartment, the warm air which is produced when the condenser 35 and compressor 37 are cooled with air is blown toward the evaporating dish 40 by operating the blower 26 and, in addition, a wind vane 45 which guides the warm air toward the dish 40 is attached to the top panel of the equipment compartment 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling storage having a storage chamber inside a heat insulating box, a cooling chamber for cooling the storage chamber, and a machine room below the heat insulating box. Things.

[0002]

2. Description of the Related Art Conventionally, this type of cooling storage has a storage room in an insulated box, and a machine room for installing a compressor, a condenser and the like below the storage room. .
A cooler is provided at a lower portion of the storage chamber, and a drain socket for draining drain water from the inside of the refrigerator to an evaporator installed in the machine room is provided below the cooler. I have. The evaporating apparatus includes an evaporating dish and an evaporating plate that absorbs drain water stored in the evaporating dish by capillary action.

[0003] Waste water exhausted by operating a compressor and a condenser installed in the machine room is blown onto the evaporating dish by a blower for the condenser, so that the drain water stored in the evaporating dish of the evaporator is discharged. Was being evaporated.

[0004]

However, in such a conventional configuration, the waste heat discharged from the compressor or the condenser cannot be efficiently blown to the evaporating plate of the evaporator, so that the waste heat is stored in the evaporating dish. The evaporation efficiency of drain water is poor, and there is a demand for improving the evaporation efficiency of drain water.

[0005] Therefore, the present invention has been made to solve the conventional technical problem, and an object of the present invention is to provide a cooling storage that can improve the evaporation efficiency of an evaporating dish.

[0006]

SUMMARY OF THE INVENTION The cooling storage of the present invention comprises:
A storage room is formed in the heat insulation box, and the storage room is cooled by a cooler, and a machine room is formed below the heat insulation box,
In this machine room, a compressor and a condenser that constitute a refrigerant circuit together with a cooler, a condenser blower and an evaporating dish that receives drain water from the cooler, and the like are installed, and by operating the condenser blower, It is characterized in that hot air obtained by air-cooling a condenser or a compressor is blown out toward the evaporating dish, and a wind direction plate for guiding the warm air toward the evaporating dish is attached to the top of the machine room.

According to the present invention, a storage room is formed in the heat insulating box, the storage room is cooled by a cooler, and a machine room is formed below the heat insulating box, and a cooler is provided in the machine room. In the cooling storage, which is equipped with a compressor and a condenser that together form a refrigerant circuit, and a condenser blower and an evaporating dish that receives drain water from the cooler, the condenser and the compressor are air-cooled by the operation of the condenser blower. The blown warm air is blown out toward the evaporating dish, and a wind direction plate for guiding the warm air toward the evaporating dish is attached to the top of the machine room, so that the warm air can be efficiently blown to the evaporating dish, Thereby, the evaporation efficiency of the evaporating dish can be improved.

[0008] The cooling storage according to the second aspect of the present invention is the first aspect.
In addition to the invention, the airflow direction plate is characterized by forming a downward flange for securing a ventilation path.

According to the second aspect of the present invention, in addition to the first aspect of the present invention, the airflow direction plate is provided with a downward flange for securing a ventilation path, so that it is possible to easily secure warm air blown to the evaporating dish. Thus, the evaporation efficiency of the evaporating dish can be further improved.

The cooling storage according to the third aspect of the present invention is the second aspect.
In addition to the invention of the above, a folded portion is formed on the lower edge of the downward flange of the wind direction plate.

According to the third aspect of the present invention, in addition to the second aspect of the present invention, since a folded portion is formed on the lower edge of the downward flange of the wind direction plate, devices such as a compressor and a condenser installed in the machine room. Can be easily put in and out,
Maintenance work of the equipment in the machine room can be easily performed.

In addition, even when equipment located below the wind direction plate comes into contact with a folded portion formed at the lower edge of the flange of the wind direction plate, damage to the equipment can be avoided. .

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a front view of a cooling storage 1 as an embodiment to which the present invention is applied, FIG. 2 is a perspective view of the cooling storage 1 as an embodiment to which the present invention is also applied, FIG. FIG. 4 shows a perspective view of the cooling storage 1. The cooling storage 1 is, for example, a low-temperature showcase installed in a restaurant or the like, and has a main body composed of a heat insulating box 2 opened at the front. The heat-insulating box 2 includes an outer box 3 made of a steel plate having an opening at the front, an inner box 4 made of a steel plate or a hard synthetic resin having an opening at the front and incorporated in the outer box 3 with a space therebetween, and an outer box. 3 and a heat insulating material 9 made of urethane foam filled between the inner box 4 and the foam.

A storage room 5 is formed in the inner box 4, and a front opening 6 of the storage room 5 is closed by a sliding door type glass door 7, 8 so as to be openable and closable. In the storage room 5, a shelf 10 for displaying products is installed. Although only one shelf 10 is shown in this embodiment, a plurality of shelves 10 may be provided.

A heat insulating partition plate 11 is provided on the bottom surface of the storage room 5 at a predetermined distance from the bottom surface of the heat insulating box body 2. The regenerative chamber 12 is constructed. The cold storage chamber 12 houses a cold storage unit 49 composed of a cool storage agent 13 and a cooler 34, which will be described in detail later. It is assumed that an electric heater 25 is provided on the upper surface of the heat insulating partition plate 11 as shown in FIG.

Duct plates 15, 15 are attached to both side walls of the inner box 4 of the storage room 5 at predetermined intervals from the side walls of the inner box 4, respectively. One of the duct plates 15, which is attached to the right side in this embodiment, forms a duct 18 whose lower end communicates with the cold storage chamber 12, and discharges cool air into the storage chamber 4 at the top. Discharge port 16 is formed. A position corresponding to the discharge port 16 of the duct 18 is an air circulation blower 20.
Is provided. The other duct plate 15, which is attached to the left side in this embodiment, has a duct 19 whose lower end communicates with the cold storage chamber 12, and has a cool air in the storage chamber 4 at the top. A suction port 17 for sucking air is formed. A temperature sensor 30 for detecting the temperature of the cool air sucked into the duct 19 is attached above the duct 19, and is connected to the control device 24.

Further, at the lower rear portion of each of the duct plates 15, 15, that is, at the left and right corners behind the bottom surface of the storage room 5,
A plurality of cool air circulation holes 21 and 22 are formed, respectively. The cool air circulation holes 21 and 22 are respectively provided in the cold storage chambers 12.
Has been communicated with. Furthermore, each duct plate 15, 1
Behind 5, illumination lamps 26, 26 for illuminating the inside of the storage room 5 vertically are provided.

On the other hand, below the heat insulating box 2, a machine room 31 is provided.
Are formed. The machine room 31 will be described with reference to FIG. FIG. 5 shows a perspective perspective view of the lower part of the cooling storage 1. The machine room 31 is open at the front, and this opening is closed by a panel 33 having a suction port 32 formed therein so as to be freely opened and closed.

In the present embodiment, a condenser 35 constituting a cooling device together with the cooler 34 in this embodiment is arranged in order from the right in this embodiment.
And a condenser blower 3 for cooling the condenser 35
6 and a compressor 37 are provided. The cooling devices such as the compressor 37, the condenser 35, and the cooler 34 are connected by a refrigerant pipe 42 to form a so-called refrigeration cycle. Here, the cooler 34
A refrigerant pipe 42 for connecting the refrigerant chamber 42 and the condenser 35 installed in the machine room 31 is provided from the left side of the machine room 31 above an evaporator 38 to be described later. An evaporator 38 is provided on the left side of the compressor 37. It is assumed that the control device 24 is also provided in the machine room 31.

On the other hand, below the cooler 34, the cooler 3
A drain pan (not shown) for draining drain water generated from the storage chamber 4 out of the storage chamber 5 is formed, and a drain socket 39 is provided at a lower end of the drain pan. The evaporator 3 is connected via the drain socket 39.
Drain water is drained to 8. The evaporating device 38 includes an evaporating dish 40 and an evaporating plate 41 that absorbs drain water stored in the evaporating dish 40 by capillary action.

Here, a wind direction plate 45 is attached to the bottom wall 2A of the heat insulating box 2 located above the evaporator 38. The wind direction plate 45 will be described with reference to FIGS. FIG. 6 is a perspective view of the wind direction plate 45 of the present embodiment, and FIG.
Shows a partially enlarged perspective view of the wind direction plate 45 of the present embodiment. The wind direction plate 45 is a plate-like member made of, for example, a steel plate material, and has front flanges and rear ends formed with downward flanges 46, which are bent downward at substantially right angles. A lower end of the downward flange 46 has a folded portion 47 bent further inward and upward at a predetermined angle as shown in FIG.
A is formed. Further, the evaporating device 38 of the wind direction plate 45
The end on the side, that is, the left end in the present embodiment, is formed with an inclined portion 48 which is formed to be inclined downward.
In this embodiment, two holes formed on the upper surface of the wind direction plate 45 are mounting holes 5 for mounting to the bottom wall 2A of the heat insulating box 2.
7, 57.

With the above configuration, when the cooling device in the machine room 31 is operated, warm air (waste heat) of the compressor 37 and the condenser 35 is blown toward the evaporator 38 by the condenser blower 36. At this time, the warm air located above the machine room 31 enters from the right end of the wind direction plate 45 attached to the bottom wall 2A of the heat insulating box 2 in this embodiment.
The warm air that has entered the wind direction plate 45 is blown below the wind direction plate 45, that is, on the evaporating plate 41 of the evaporator 38, along the inclined portion 48 formed at the left end of the wind direction plate 45.

As a result, the warm air in the machine room 31 can be efficiently blown to the evaporating plate 41 of the evaporator 38 by the wind direction plate 45, and the evaporating plate 41 improves the evaporation effect of the drain water absorbed. be able to. Thus, the drain water stored in the evaporating dish 40 can be effectively evaporated.

Further, since the wind direction plate 45 has the downward flanges 46, 46 at the front end and the rear end, the wind direction plate 4
5 and, for example, a space in the machine room 31 such as the refrigerant pipe 42 can be sufficiently secured.
8, the amount of warm air blown to the evaporating plate 41 can be easily secured, and the evaporation of the evaporating dish 40 can be further promoted.

Further, the downward flange 4 of the wind direction plate 45 is provided.
At the lower end of 6, a folded portion 47 </ b> A that is bent further inward and upward at a predetermined angle is formed, so that the device located below the wind direction plate 45 due to, for example, maintenance work in the machine room 31. For example, even when the refrigerant pipe 42 contacts the lower edge of the flange 46 of the wind direction plate 45,
When the folded portion 47A of the wind direction plate 45 is brought into contact, damage to the refrigerant pipe 42 and the like caused by the end of the flange 46 coming into contact can be avoided beforehand. Inconveniences such as leakage of the refrigerant due to damage to the device can be avoided beforehand.

Also, since the folded portion 47A is formed at the end of the flange 46 of the wind direction plate 45, maintenance work in the machine room 31 can be easily performed.

FIGS. 8 to 12 show other embodiments of the wind direction plate 45, respectively. The wind direction plate 45 of another embodiment shown in FIG. 8 has a bent portion 47B formed at the lower end of the downward flange 46 on the opposite side to the above-described embodiment, that is, bent outward at a predetermined angle toward the upper side. ing.

The wind direction plate 45 of another embodiment shown in FIG. 9 has a folded portion 47C which is bent inward at a predetermined curvature at the lower end of a downward flange 46. Further, FIG.
0 has a folded portion 47 which is bent outward at a predetermined curvature at the lower end of the downward flange 46.
D is formed.

As a result, the lower end of the downward flange 46 of the wind direction plate 45 is formed with the folded portions 47C and 47D which are formed to be curved inward or outward, so that the flange 4
Even when equipment such as the refrigerant pipe 42 located below the wind direction plate 45 contacts the lower end of 6, the damage to the refrigerant pipe 42 and the like can be further avoided.

Further, in the wind direction plate 45 of another embodiment shown in FIG. 11, after the lower end of the downward flange 46 is bent inward at a substantially right angle, the further end is substantially upward. A folded portion 47E bent at a right angle is formed. The wind direction plate 45 of another embodiment shown in FIG. 12 is formed by bending the lower end of the downward flange 46 outward at a substantially right angle.
Further, a folded portion 47F is formed in which such an end is bent upward at a substantially right angle.

As a result, it is possible to avoid damage to the refrigerant pipe 42 and the like due to the end face of the downward flange 46 of the wind direction plate 45, and to make contact with equipment or the like to form a folded portion formed at the lower end of the flange 46. The portion 47E or 47F is less likely to be deformed. This ensures that the wind direction plate 4
5 and, for example, a space in the machine room 31 such as the refrigerant pipe 42 can be sufficiently secured.
8, the amount of warm air blown to the evaporating plate 41 can be easily secured, and the evaporation of the evaporating dish 40 can be further promoted.

Next, the regenerator 13 and the cooler 34 provided in the regenerator 12 will be described with reference to FIGS. FIG. 13 is an exploded perspective view of the cool storage unit 49. The cool storage unit 49 includes a plurality of cool storage agents 13 arranged in the cool storage room 12, the cooler 34, and the cool air circulation blower 53. The regenerator 13 is stored in a regenerator box 50 as shown in FIG.

Here, the regenerator box 50 will be described with reference to FIGS. FIG. 14 shows a regenerator box 50.
FIG. 15 is an exploded perspective view of the regenerator box 50, and FIG.
6 is an enlarged exploded perspective view of the upper portion of the cool storage agent box 50, and FIG. 17 is an enlarged exploded perspective view of the lower portion of the cool storage agent box 50. The regenerator box 50 includes a main body 54 composed of a plate member having good thermal conductivity, and a cover 5 fitted to the front surface of the main body 54.
5, the cooler 34 attached to the outer surface of the main body 54,
A press member 56 for holding the cooler 34 on the main body 54 is provided. The cooler 34 is constituted by a cooling pipe arranged in a meandering shape, and a holding member 56 for holding the cooler 34 in the main body 54 extends left and right so as to match the meandering shape of the cooler 34. A plurality of grooves to be formed are formed vertically.

The main body 54 has flanges 58 formed on left and right edges. The flange 58 is bent slightly forward and then extends obliquely inward, and an outward portion 60 extending outward from the tip of the inclined portion 59 in parallel with the main body 54. Is formed from. A plurality of screw holes 61 are formed in the outward portion 60 in a vertical direction.

The lower end of the main body 51 is bent forward at a substantially right angle, then extends to substantially the same position as the front end of the outward portion 60 of the flange 58, and is further bent upward at a substantially right angle. Formed flange 62 is formed. This flange 62
Are formed with a plurality of cool air circulation holes 63 on the lower surface thereof.

The cover 55 is formed with a flange 64 whose left and right edges are bent slightly rearward, and the front surface of the cover 55 is aligned with a screw hole 61 formed in the outward portion 60 of the main body 51. A plurality of screw holes 65 for screwing are formed. The flange 64 is provided with a screw hole 68 for fixing the blower-side connection member 51 and the suction-side connection member 52 to be described later by screwing. At the lower end of the cover 55, a flange 66 bent rearward at a substantially right angle is formed. This flange 6
6, a plurality of cool air circulation holes 67 are formed at positions corresponding to the cool air circulation holes 63 formed in the flange 62 of the main body 51.

With the above configuration, the regenerator box 50 is aligned with the screw hole 61 of the main body 54 and the screw hole 65 of the cover 55 after the outward portion 60 of the flange 58 of the main body 54 is aligned with the rear surface of the cover 55. And fixed with screws 69. A cooler 3 composed of a cooling pipe is provided on the back of the main body 54.
4 is attached by the pressing member 56, whereby the cold storage agent box 50 is completed.

At this time, the screw 69 is located outside the inclined portion 59 formed on the flange 58 of the main body 54 of the cold storage container 50 and is screwed. 50, without entering the inside of the cold storage container 5
0 can be fixed.

Therefore, the inconvenience of damaging the regenerator 13 stored in the regenerator box 50 with the tip of the screw 69 can be avoided. Further, even when the cold storage agent 13 is taken in and out of the cold storage agent box 50, the tip of the screw 69 does not come into contact with the cold storage agent 13, so that the risk of damage to the cold storage agent 13 can be avoided. become able to.

In the present embodiment, five cold storage agent boxes 50 completed as described above are arranged in parallel, and a cooler 34 attached to each is joined. Then, both ends of the cold storage agent box 50 are fixed to the blower side connection member 51 and the suction side connection member 52, respectively. Here, the blower-side connecting member 51 is formed with a flange 71 whose front end is bent at a substantially right angle to the blower 53 side, and an opening 70 opened rearward from a front portion of the blower-side connecting member 51. Is formed. Further, screw holes 76 for fixing the cold storage agent box 50 are formed at the upper edge and the lower edge of the opening 70 of the blower-side connection member 51, respectively.

The suction side connection member 52 has a flange 73 formed at the edge thereof at a substantially right angle toward the side, and extends from the front to the rear of the suction side connection member 52. An opening 74 is formed. Further, screw holes 77 for fixing the cool storage agent box 50 are formed at the upper edge and the lower edge of the opening 74 of the suction side connection member 52, respectively.

Here, a temperature sensor 80 for detecting the temperature of the regenerator unit 49 is attached to the lower part of the regenerator box 50 near the center. .

Next, the procedure for assembling the cool storage unit 49 will be described with reference to FIGS. 18 is a cross-sectional plan view of the cold storage unit 49, and FIG.
9 is an enlarged plan view on the right side of the cool storage unit 49, and FIG. 21 is a vertical sectional side view of the cool storage unit 49. First, the regenerator 13 is stored in each regenerator box 50. After that, in this embodiment, five cold storage agent boxes 50 each containing the cold storage agent 13 are arranged in parallel, and a cool storage agent box cover 81 is placed on the upper surface thereof.

At this time, four claws 82 are formed at the center of the cool storage box cover 81 in the present embodiment, which are formed by cutting and raising downward. The claw portions 82 are provided on the coolers 34 attached to the outside of the respective regenerator boxes 50.
And the width of the claw portion 82 is cut and raised to a width slightly larger than the width of the cooler 34.

Thus, by placing the cool storage agent boxes 50 such that the respective coolers 34 are located at the positions of the claws 82 of the cool storage agent box cover 81, the respective cool storage agent boxes 50 The arrangement can be easily determined.

Further, since the claw portion 82 is formed to have a width larger than the width of the cooler 34, it is possible to secure an interval between the adjacent regenerator boxes 50. As a result, the amount of cool air passing between the cool storage agent boxes 50 can be ensured.

The right ends of these regenerator boxes 50 are fixed by a blower-side connecting member 51, and the left ends are fixed by a suction-side connecting member 52. At this time, each of the cold storage agent boxes 50 and the blower side connection member 51 and the suction side connection member 52 are fixed to each other by screw holes 68 formed in the flange 64 of the cover 55 of the cold storage agent box 50 and the blower side connection. The screw hole 76 formed in the member 51 or the screw hole 77 formed in the suction side connection member 52 is aligned with the screw 7.
8 by screwing.

Here, the screw 78 is located outside the inclined portion 59 formed on the flange 58 of the main body 54 of the cold storage container 50 and is screwed. 50, without entering the inside of the cold storage container 50
Can be fixed.

Therefore, the disadvantage that the regenerator 13 stored in the regenerator box 50 is damaged by the tip of the screw 78 can be avoided. Further, even when the regenerator 13 is taken in and out of the regenerator box 50, the tip of the screw 78 does not come into contact with the regenerator 13, so that the danger of damage to the regenerator 13 can be avoided. become able to.

Further, a blower cover 72 having an opening 75 for mounting a cool air circulation blower 53 is attached to the blower side of the blower side connection member 51. Blower 53
Is attached.

On the other hand, a temperature sensor 30 for detecting the temperature in the duct 19 (the temperature in the storage room 5) and a temperature sensor 80 for detecting the temperature in the cool storage unit 49 are connected to the control device 24. Based on these outputs, the compressor 37, the condenser 36, the air circulation fan 20 and the cool air circulation fan 53 are controlled. Further, a timer as a time limit device is provided in the control device 24. The cooling storage 1 is provided with a control panel (not shown) so that the temperature in the storage room 5 and the time of the operation mode can be set.

The operation control of the cooling storage 1 with the above configuration will be described with reference to FIG. FIG. 22 shows a timing chart of the cooling storage 1. The cooling storage 1 in the present embodiment performs two types of operation control, that is, a cold storage agent freezing mode and a cold storage agent cooling mode, and the cold storage agent freezing mode and the cold storage agent cooling mode are switched by the control panel. Set the time.
For example, when the cooling storage 1 in the present embodiment is installed in a restaurant that is open from evening to midnight, for example, the cool storage agent freeze mode is from 1:00 am to 5:00 pm, and the cool storage agent freeze mode is from 5:00 pm to 1 am Until time is set as the regenerator cooling mode. Accordingly, during the business hours, the cooling operation without operating the cooling device such as the compressor 37 is performed, so that the noise at the installation site can be reduced.

In the cooling agent freezing mode, as shown in FIG. 22, the compressor 37 and the condenser blower 36 are operated to cool the cooling agent 13 provided with heat exchange with the cooler 34.
At this time, the cool air circulation blower 53 is connected to the duct 1
The operation control is performed based on the output of the temperature sensor 30 that detects the temperature inside the storage chamber 9 (the temperature inside the storage room 5). That is, when the set temperature in the storage room 5 is, for example, + 9 ° C., when the temperature detected by the temperature sensor 30 reaches the upper limit temperature Ta ° C. (in this case, + 11.5 ° C.), the cool air circulation blower 53 is started. I do. Thereby, the temperature in the storage room 5 decreases. When the temperature detected by the temperature sensor 30 reaches the lower limit temperature Tb ° C. (in this case, + 6.5 ° C.) due to the temperature drop, the cool air circulation blower 53 is stopped. Thereby, the temperature in the storage room 5 is maintained at the set temperature.

At this time, since the air circulation blower 20 is continuously started, the flow of the cool air in the storage room 5 is as shown in FIG.
As shown in FIG. 5, when the cool air circulation blower 53 is activated, the cool air that has passed between the cool storage units 49 is accelerated by the cool air circulation blower 53 and enters the duct 18 from the cool storage chamber 12. After being further accelerated by the air circulation blower 20 installed above the duct 18, the air is discharged into the storage room 5 through the discharge port 16. The cool air that has entered the storage room 5 then enters the duct 19 from the suction port 17, descends the duct 19, and returns to the cold storage room 12.

When the cool air circulating blower 53 is stopped, the air in the duct 18 is removed from the air circulating blower 2.
After being discharged into the storage room 5 from the discharge port 16 by 0,
The air enters the air inlet 16 or the cool air circulation holes 21 and 22 formed at the rear of the bottom surface of the storage room 5, and again enters the duct 19.

As a result, it is possible to avoid temperature unevenness caused by a no-air condition in which the air in the storage room 5 is not circulated. In addition, since the cool air circulation blower 53 is stopped and air is circulated by the air circulation blower 20, air circulation can be performed without drawing cool air from the cooler 34 and the regenerator 13 into the storage room 5. Become like

Therefore, excessive cooling in the storage room 5 in the cold storage agent freezing mode can be prevented beforehand, and temperature unevenness caused by a no-air condition in the storage room 5 can be eliminated. Become.

In this embodiment, the air circulation blower 20 is used.
Is a continuous operation, but starts the air circulation fan 20 when the cool air circulation fan 53 stops, and stops the air circulation fan 20 when the cool air circulation fan 53 starts. Operation control for starting or stopping in a cycle opposite to that of 53 may be performed. Even in such a case, the same effect as in the above embodiment can be obtained.

On the other hand, in the cold storage agent freezing mode, the freezing of the cold storage agent 13 progresses, and the temperature detected by the temperature sensor 80 installed in the cold storage unit 49 is the first temperature below the freezing temperature of the cold storage agent 13, For example, when the temperature reaches −20 ° C., the control device 24 stops the operation of the compressor 37. When the operation of the compressor 37 of the cooling device is stopped, when the temperature of the regenerator 13 gradually increases and reaches a second temperature that is equal to or lower than the freezing temperature of the regenerator 13, for example, −13 ° C., the control device 24 The operation of the compressor 37 is restarted. Thus, when the temperature of the regenerator 13 reaches the first temperature again, the operation of the compressor 37 is similarly stopped. The temperature control is repeated until the cold storage agent freezing mode ends and the cold storage agent cooling mode is set.

As a result, inconveniences such as breakage of the cooler 34 and the regenerator 13 due to overcooling of the cooler 34 and the regenerator 13 in the regenerator freezing mode can be avoided. Further, when the temperature falls below a certain temperature (first temperature), the operation of the compressor 37 is stopped, so that it is possible to reduce unnecessary power consumption by cooling the regenerator 13 more than necessary.

Next, the regenerator cooling mode after the refrigerating agent freezing mode is completed by the control device 24 will be described. In this cool storage agent cooling mode, as shown in FIG. 22, the operation of the compressor 37 and the condenser blower 36 is stopped, and the inside of the storage room 5 is cooled by the latent heat of melting of the cool storage agent 13 frozen in the cool storage agent freezing mode. At this time, the operation of the cool air circulation blower 53 is controlled based on the output of the temperature sensor 30 that detects the temperature in the duct 19 (the temperature in the storage room 5). That is, when the set temperature in the storage room 5 is, for example, + 9 ° C., when the temperature detected by the temperature sensor 30 reaches the upper limit temperature Ta ° C. (in this case, + 11.5 ° C.), the cool air circulation blower 53 is started. I do. Thereby, the temperature in the storage room 5 decreases. Due to this temperature drop, the temperature detected by the temperature sensor 30 becomes the lower limit temperature Tb ° C.
When the temperature reaches 6.5 ° C.), the cool air circulation blower 53 is stopped. Thereby, the temperature in the storage room 5 is maintained at the set temperature.

At this time, since the air circulation blower 20 is started continuously, the flow of the cool air in the storage room 5 is as shown in FIG.
As shown in FIG. 5, when the cool air circulation blower 53 is activated, the cool air passing between the cool storage units 49 is accelerated by the cool air circulation blower 53 and enters the duct 18 from the cool storage chamber 12 and enters the duct 18. After being further accelerated by an air circulation blower 20 installed above 18, the air is discharged into the storage room 5 through the discharge port 16. The cool air that has entered the storage room 5 then enters the duct 19 through the suction port 17, descends the duct 19, and returns to the cold storage room 12.

When the cool air circulating blower 53 is stopped, the air in the duct 18 is discharged from the air circulating blower 2.
After being discharged into the storage room 5 from the discharge port 16 by 0,
The air enters the air inlet 16 or the cool air circulation holes 21 and 22 formed at the rear of the bottom surface of the storage room 5, and again enters the duct 19.

As a result, it is possible to avoid temperature unevenness caused by a no-air condition in which the air in the storage room 5 is not circulated. In addition, since the cool air circulation blower 53 is stopped and air is circulated by the air circulation blower 20, air circulation can be performed without drawing cool air from the cooler 34 and the regenerator 13 into the storage room 5. Become like

As a result, excessive cooling in the storage room 5 in the cool storage agent cooling mode can be prevented beforehand, and the products displayed in the storage room 5 are excessively cooled,
Deterioration of product quality can be avoided beforehand.

Even when the cool air circulation blower 53 is not operated, since the air circulation blower 20 is operated, it is possible to prevent the inside of the storage room 5 from being in a windless state and to prevent the occurrence of temperature unevenness. Will be able to Thereby, the inconvenience that the temperature varies depending on the position where the commodities displayed in the storage room 5 are displayed can be avoided.

When the timer of the control device 24 reaches the time at which the refrigerating agent cooling mode is ended, the operation of the compressor 37 is restarted, and the hot gas defrosting operation by flowing the hot gas to the cooler 34 is performed. Do. Thereby, the cooler 34 and the regenerator 13 are completely melted. After that, the control device 24 enters the cold storage agent freezing mode and starts the freezing operation of the cold storage agent 13. Thereby, the cold storage agent 13 is frozen in preparation for business on the next day, and the inside of the storage room 5 can be cooled.

[0068]

As described above in detail, according to the present invention, a storage room is formed in a heat insulating box, and the storage room is cooled by a cooler, and a machine room is formed below the heat insulating box. The operation of the condenser blower in a cooling storage in which a compressor and a condenser constituting a refrigerant circuit together with a cooler and a condenser blower and an evaporating dish for receiving drain water from the cooler are installed in the machine room. Since the hot air that has cooled the condenser and compressor is blown out toward the evaporating dish, a wind direction plate that guides the warm air toward the evaporating dish is installed on the top of the machine room.
The warm air can be efficiently blown to the evaporating dish, whereby the evaporating efficiency of the evaporating dish can be improved.

According to the second aspect of the present invention, in addition to the first aspect of the present invention, a downward flange for securing a ventilation path is formed in the wind direction plate, so that the warm air blown to the evaporating dish can be easily secured. Thus, the evaporation efficiency of the evaporating dish can be further improved.

According to the third aspect of the present invention, in addition to the second aspect of the present invention, since a folded portion is formed at the lower edge of the downward flange of the wind direction plate, devices such as a compressor and a condenser installed in the machine room. Can be easily put in and out,
Maintenance work of the equipment in the machine room can be easily performed.

Further, even when equipment located below the wind direction plate contacts a folded portion formed at the lower edge of the flange of the wind direction plate, damage to the equipment can be avoided. .

[Brief description of the drawings]

FIG. 1 is a front view of a cooling storage as an embodiment to which the present invention is applied.

FIG. 2 is a perspective view of a cooling storage as an embodiment to which the present invention is applied.

FIG. 3 is a vertical sectional side view of a cooling storage.

FIG. 4 is a perspective view of the cooling storage;

FIG. 5 is a perspective view of the lower part of the cooling storage;

FIG. 6 is a perspective view of a wind direction plate of the present embodiment.

FIG. 7 is a partially enlarged perspective view of a wind direction plate of the present embodiment.

FIG. 8 is a partially enlarged perspective view of a wind direction plate of another embodiment.

FIG. 9 is a partially enlarged perspective view of a wind direction plate of another embodiment.

FIG. 10 is a partially enlarged perspective view of a wind direction plate of another embodiment.

FIG. 11 is a partially enlarged perspective view of a wind direction plate of another embodiment.

FIG. 12 is a partially enlarged perspective view of a wind direction plate of another embodiment.

FIG. 13 is an exploded perspective view of the cold storage unit.

FIG. 14 is a perspective view of a cool storage box.

FIG. 15 is an exploded perspective view of a cool storage box.

FIG. 16 is an enlarged exploded perspective view of the upper portion of the cool storage box.

FIG. 17 is an enlarged exploded perspective view of the lower part of the cool storage box.

FIG. 18 is a cross-sectional plan view of the cold storage unit.

FIG. 19 is an enlarged plan view of the left side of the cool storage unit.

FIG. 20 is an enlarged plan view of the right side of the cool storage unit.

FIG. 21 is a vertical sectional side view of the cool storage unit.

FIG. 22 is a timing chart of the cooling storage.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Cooling storage 2 Heat insulation box 5 Storage room 12 Cool storage room 13 Cool storage agent 15 Duct board 16 Discharge port 17 Suction port 18, 19 Duct 20 Air circulation blower 21, 22 Cold air circulation hole 24 Control device 30 Temperature sensor 31 Machine room 34 Cooler 35 Condenser 36 Condenser blower 37 Compressor 38 Evaporator 40 Evaporating dish 41 Evaporation plate 42 Refrigerant pipe 45 Wind direction plate 46 Downward flange 47A, 47B, 47C, 47D, 47E, 47F Folding portion 48 Inclined portion 49 Cool storage unit 50 Cool storage agent box 51 Blower side connecting member 52 Suction side connecting member 53 Cooling air blower 54 Main body 55 Cover 56 Pressing member 57 Mounting hole 58, 62, 64, 66, 71, 73 Flange 59 Inclined portion 60 Outward portion 61, 65 , 68, 76, 77 Screw holes 63, 67 Cold air flow holes 69, 78 Di 72 blower cover 80 temperature sensor 81 refrigerant 13A box body cover 82 claw portion

Claims (3)

[Claims] 1. A storage room is formed in an insulated box, and the storage room is cooled by a cooler, and a machine room is formed below the insulated box, and a refrigerant is provided in the machine room together with the cooler. In a cooling storage that is equipped with a compressor or a condenser that constitutes a circuit, and a condenser blower and an evaporating dish that receives drain water from the cooler, the condenser and the compressor are operated by operating the condenser blower. A cooling storage, wherein air-cooled warm air is blown out toward the evaporating dish, and a wind direction plate for guiding the warm air toward the evaporating dish is attached to a top surface of the machine room. 2. The cooling storage according to claim 1, wherein a downward flange for securing a ventilation path is formed in the wind direction plate. 3. The cooling storage according to claim 2, wherein a bent portion is formed at a lower edge of a downward flange of the wind direction plate.