JPS5844187B2 - Refrigeration equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a refrigeration system installed in stores such as supermarkets.

Conventionally, in this type of refrigeration system, the distance between the compressor and condenser and the showcase is large, and the refrigerant piping becomes long, resulting in a decrease in the operating efficiency of the refrigeration system due to pressure loss of the refrigerant.

In addition, in order to prevent cold air from accumulating at the bottom of the showcase due to cold air leakage from the showcase and causing discomfort to customers, the display case is formed as shown in FIGS. 1 and 2.

That is, 1 is a compressor, 2 is a condenser, and 3 is a compressor 1 and a condenser 2 formed between a wall 8 and a showcase 5 described below.
An air flow path 5 is provided with a refrigerant pipe 4, and a showcase 5 is provided, and the air flow path 3 is communicated with the inside of the store 9 via a cold air intake 6 and a warm air blowing lower.

Reference numeral 10 denotes a blower, which discharges warm air within the airflow passage 3 into the store.

Reference numeral 11 denotes coolers connected in parallel to each other, which communicate with the compressor 1 and the condenser 2 through an expansion valve 12 and a solenoid valve 13 through a refrigerant pipe 4 to form a refrigeration cycle.

In such a configuration, when the blower 10 is operated together with the operation of the refrigeration cycle, the cold air 9b accumulated at the bottom of the showcase is sucked into the air flow passage 3 through the cold air intake 6, and the compressor 1 and condenser 20 Exchanges heat with the surface and generates warm air 9a
The hot air is discharged into the store 9 through the warm air blowing lower.

For this reason, it is good when the store 9 is heated in winter,
When the store 9 is cooled in summer, the warm air 9a discharged into the store causes an increase in the cooling load in the store.

Furthermore, since the compressor 1 and the condenser 2 are installed behind the showcase 5, there are drawbacks such as difficulty in maintenance and inspection.

This invention has been devised to eliminate the above-mentioned drawbacks of the conventional art, and one embodiment of the invention will be described below with reference to the drawings.

That is, in FIG. 3, 14 is provided in the air flow path 3 and includes a compressor 1, an air-cooled condenser 2, and a reversible transfer fan 15.
It is a box body that stores the air, and communicates with the inside of the store 9 through a cold air intake 6 and a warm air blowout lower.

Note that the direction of the blower 15 can be adjusted depending on the temperature inside the store 9.

A damper 16 is rotatably attached to the wall and closes the airflow passage 3, and rotates to close the air outlet 18 when the temperature inside the store is below a predetermined temperature.

Others are the same as before, and will be omitted below.

Next, the effect will be explained.

When the temperature inside the store 9 is higher than a predetermined temperature, such as in summer, the damper 16 is rotated and set to a position where it closes the airflow passages 3 and 6.

Then, by switching the blower 15, which is operated together with the operation of the refrigeration cycle, in the direction of the arrow, the warm store air 9a/ accumulated near the ceiling of the store 9 is blown into the box body 14 from the warm air blowing lower, and the compressor 10 surface is blown into the box body 14. Since the air exchanges heat with the air-cooled condenser 2 and is discharged outside the store 17 through the air outlet 18, it not only does not increase the cooling load inside the store 9, but also
Since the warm air 9a' accumulated near the ceiling of the store 9 is discharged to the outside of the store 10, the store can be cooled more effectively.

Next, when the temperature inside the store 9 is lower than a predetermined temperature, such as during winter, the damper 16 is rotated and set to a position where it closes the air outlet 18.

The cold air 9b accumulated at the bottom of the showcase 5 is sent to the box body 14 through the cold air intake 6 by blowing the air from the blower 15 in the direction of arrow B.
The warm air 9a is sucked in, exchanges heat with the surface of the compressor 1 and the air-cooled condenser 2, and is blown out from the warm air blowing lower into the store to heat the store.

According to such a configuration, a box housing the compressor and condenser is provided at the top of the store showcase, and the box and the inside of the store are separated by the heating outlet, the outside of the store is connected to the air exhaust hole, and the bottom of the showcase is connected to the air exhaust hole. By connecting through the cold air intake passage, installing a damper at the joint between the cold air intake passage and the air exhaust hole, and changing the setting position of the damper and the blowing direction of the blower depending on the temperature in the store,
In the summer, warm air from the store can be effectively discharged outside the store without increasing the cooling load inside the store due to exhaust heat from the compressor and condenser.

Furthermore, in the winter, the exhaust heat from the compressor and condenser can be effectively used to heat the store, and it also eliminates the cold air that accumulates at the bottom of the showcase, eliminating customer discomfort.

Additionally, by installing the compressor and condenser at the top of the showcase, there is no need for a groove to house the refrigerant piping that communicates the compressor and condenser with the showcase, making it practical to eliminate the need for civil engineering work at the store. It also has a positive effect.

As described above, this invention communicates the warm air part of the air flow path formed between the wall and the showcase with the outside air during indoor cooling, thereby increasing the indoor cooling load due to the exhaust heat of the refrigerator during indoor cooling. In addition, by effectively utilizing the exhaust heat when heating the room, comfortable indoor heating and cooling can be achieved.

[Brief explanation of the drawing]

Figure 1 is a diagram of a normal refrigeration cycle, Figure 2 is a layout diagram of a conventional refrigeration system, Figure 3 is a diagram of a refrigeration cycle showing an embodiment of the present invention, and Figure 4 is a diagram of an embodiment of the invention. It is a layout diagram. Note that the same reference numerals in the figures indicate the same or equivalent parts. In the figure, 1 is a compressor, 2 is a condenser, 3 is an air flow path, 5 is a showcase, 8 is a wall, 9 is a store, or indoors, 16
is a damper, and 18 is an air outlet.

Claims (1)

[Claims] 1. In a refrigeration system equipped with an air flow passage formed between a wall and a showcase, and a condenser provided in the air flow passage and connected to a cooler of the showcase and refrigerant piping, the air The wall body is provided with an air outlet that communicates the flow passage with the interior of the room at the upper and lower parts of the showcase outside the showcase, and communicates the warm air section in the upper part of the air flow passage with the outside; A damper is provided to selectively close the air outlet and the falling part of the air flow passage, and the warm air section is provided with the condenser, the reversible transfer fan facing the condenser, and the refrigerant pipe in the warm air section. A refrigeration system characterized by being provided with an interposed compressor.