JPS605859B2 - Air conditioner in supermarket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an air conditioner that controls the temperature of the air inside a supermarket, and its purpose is to overflow cold air from the closed opening of an open showcase and widely accumulate on the floor in front of the open showcase. The objective is to eliminate the so-called cold fail without disturbing the air curtain of the open showcase and to control the temperature inside the store.

The cold air that overflows from the entrance of the open showcase installed in the supermarket becomes a cold air that stays widely near the floor of the store, making customers feel cold and uncomfortable.

In addition, when several open showcases are connected together, cold fail exists over a wide area, and when heating is required, such as in winter, an air conditioner with a larger heating load than the normally used air conditioner is required. In other words, due to the existence of cold fail, a heating load higher than necessary was required. Even when the store was air-conditioned during the summer, there was a temperature difference between the cold air and other areas, making uniform cooling impossible and causing discomfort to customers. Furthermore, when the relative humidity inside the store is high during the rainy season, the presence of cold air causes frost to build up on the coolers in the open showcases faster, increasing the number of times defrosting is required. The present invention was devised in consideration of the above-mentioned matters, and is intended to comfortably flood the store and reduce heating and cooling loads, power consumption, operating costs, and equipment costs. Embodiments of the present invention will be described below with reference to the drawings. 1 is a supermarket, and a plurality of open showcases 2, 2...
... has been installed.

These open showcases freeze or refrigerate the displayed products using cold air cooled by a cooler 3 disposed inside, and also close off the entrance 4 for storing and taking out products with an air curtain. 5, 5... are ventilation holes formed in the front lower part of the open showcases 2, 2....

6 is a cold fail, and a part of the air curtain that blocks open □4 overflows, causing open showcases 2, 2,...
It is formed by staying in the front part of...

Reference numeral 7 indicates a floor duct installed on the floor of the store, and the ventilation openings 5, 5... of the open showcases 2, 2...
. . . Branch ducts 8, 8 suitable for the air conditioner 9 are formed and run through the air conditioner 9.

The air conditioner 9 has a cooler 10, an open showcase 2, 2
A heater 11 and blowers 12 and 13 that utilize the scarlet heat of a condensing unit (not shown) are installed inside, and a connection is made to allow the cooler 10 and heater 11 to communicate with the floor duct 7. Ducts 14 and 15 are provided, and a damper 16 is provided between the ducts to separate the ducts 14 and 15. Reference numeral 17 denotes a ceiling duct arranged above the store, and a plurality of ventilation holes 18, 18, . Has been passed through lotus.

In the above configuration, when cooling the inside of the store, the damper 16 is rotated in the direction of arrow A and the cooler 10 and blower 12 are operated.
5 gradually flows from the ventilation holes 5, 5..., through the branch ducts 8, 8..., the floor duct 7, and the connecting duct 14, and is cooled by the cooler 10 and reaches the ceiling. Duct 17
Through the ventilation openings 18, 18, .

Next, when heating the inside of the store, the damper 16 is rotated in the direction of arrow B, and when the heater 11 and the blower 13 are operated, the air above the store passes through the ceiling duct 17 from the ventilation rows 8, 18, and so on. It is heated by the heater 11 and sent to the cold bail 6 from the ventilation ports 5, 5, . . . through the connection duct 15, the floor duct 7, the branch ducts 8, 8, . In other words, when cooling the inside of a store, use Coldail 6.
Since the cooler 10 uses the cold air of
The cooling load for 6 minutes of cold fail has been reduced, and the cooling load has been reduced.
Power consumption can be reduced. Further, when heating the inside of the store, warm air such as heat from the lighting above the store is heated by the heater 11 and sent to the cold fail 6, so that the temperature of the cold air in the cold fail 6 is controlled by the heated warm air. In other words, the temperature of the warm air heated by the heater 11 is much higher than the cold air of the cold fail 6, so the cold fail 6 is eliminated, and uniform air flow inside the store can be measured. The heating load and power consumption can be significantly reduced compared to heating using heating systems. Furthermore, by adjusting the temperature of the warm air heated by the heater 11 and sending it to the cold air 6, the combined air of warm air and cold air passes through the inside of the store and through the ceiling duct 17 from the ventilation holes 18, 18... The air is heated by the heater 11, and the water is evaporated to become warm air with low relative humidity, which passes through the connection duct 15, the floor duct 7, the branch ducts 8, 8, and so on to the ventilation opening 5.
, 5... to the cold fail 6, and by repeating this circulation, the interior of the store is dehumidified, the relative humidity is lowered, and the coolers 3 of the open showcases 2, 2,... are defrosted. In addition to reducing the number of times, it is possible to dehumidify the store without changing the temperature in the store, and the temperature in the store can always be controlled to a comfortable state. At the same time, the ventilation holes 18, 18 of the ceiling duct 17 are formed in the front upper part of the front surfaces of the open showcases 2, 2, and the intake of cold air from the cold air 6 or the blowing out of warm air from the cold air 6 from the ventilation holes 5, 5 are separated from the air curtain. In addition, the cold air that has passed through the air conditioner 9 can be blown out from the ventilation openings 18, 18, or the warm air can be sucked in at a position away from the air curtain, so that the cold air and warm air necessary for heating can be removed. It is possible to prevent air curtains from being disturbed due to air blowing and suction.As described above, the present invention provides a floor duct installed on the floor of a store where open showcases are installed, and a floor duct installed above the store. It consists of a ceiling duct and an air conditioner that passes through both ducts.The ventilation opening of the floor duct is formed at the lower front of the open showcase, and the ventilation opening of the ceiling duct is formed at the upper front of the open showcase. Because it is characterized by the fact that it is formed by the cold air that overflows from the air curtain that closes the opening of the open showcase, it cools the inside of the store and eliminates cold fail at the same time, or closes the area near the ceiling. It is possible to heat the store by using the warm air of can prevent air curtain turbulence.

[Brief explanation of the drawing]

The drawing is a longitudinal sectional view showing an embodiment of an air conditioning system in a supermarket according to the present invention. 1...Supermarket 2,2...Open showcase, 5,5...Ventilation, 6...Cold Dale, 7...Floor duct, 9...・Air conditioner ~17...Ceiling duct, 18,18...
Ventilation opening.

Claims (1)

[Claims] 1 Open show case installation Consists of a floor duct installed on the floor of the store, a ceiling duct installed above the store, and an air conditioner that communicates these two ducts. An air conditioner for a supermarket, characterized in that an air conditioner is formed at the lower front of an open show case, and a ventilation opening for a ceiling duct is formed at the upper front of the open show case.