JPS5993164A - Air conditioner in shop in which showcase is set up - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an air conditioning system in a store equipped with a showcase having an air-cooled condenser.

In general, open freezer/refrigerated showcases with air-cooled condensers have problems with waste heat from the condenser and leakage of cold air from the openings of the case body, and of course the store's air conditioning must also be considered to deal with these issues.

The present invention is one such example, and will be explained below with reference to the drawings, taking a frozen/refrigerated open showcase as an example.

First, let us explain the open storage case shown in Figs. 1 (a) and (b) and Fig. 2 (a) and (b). It is a refrigerated open showcase. Specifically, a compressor 4 is placed at the bottom of the showcase body 1, a condenser 2 is placed at the top, and a cooler 24 is placed inside, so that the inside of the showcase body 1 can be cooled. There is also a fan duct 9 above the condenser 2.
An air cooling blower 6 is opposed to the air cooling fan 6 via. By the way, when the showcase main body 1 is transported into a store through the loading port 16, the condenser 2 is constructed as shown in FIGS. 1(a) and 1('b). Liquid pipe 8
is meandering and flexible, and the rod-shaped body is attached with a thumb screw 15.
Since several connected vertical movement devices 5 such as pantographs are attached, after installation, the
) As shown in FIG.
can be used by moving it far above the pantograph's hinge 6. When performing maintenance and inspection on the condenser 2 and air cooling blower 6, it is natural to inspect the condenser 2, etc. as shown in Figure 1 (
a) (b) State.

The present invention is a structure for air-conditioning a store using a showcase as described above. By the way, the store is shown in Figure 4.
It is as shown in FIGS. 5 and 6. That is, ceiling wall 1
4 is provided with an opening 19 for positioning the condenser 2, and further provided with a first air conditioning opening 20 so as to communicate with the inside of the store. In addition, a second air conditioning opening 21 is bored in the side wall 22 facing the outside of the store, which communicates the outside with a space 26 surrounded by the ceiling wall 14 and the roof of the store auxiliary or the floor wall of the upper floor. At the same time, an intake opening 26 is provided at a position below the ceiling wall 14.

By the way, the intake opening 26 communicates with a first air passage 25-1, which will be described later, in which the condenser 2 is arranged.

On the other hand, the second air conditioning opening 21 and the intake opening 2'5 are each provided with a ventilation fan 11.10, and the first air conditioning opening 2'
0 is equipped with a blower 16.

By the way, a duct plate 12 is arranged between the ceiling wall 14 of the store and the upper part of the showcase body 1, and an appropriate distance is maintained between the side wall 22 of the store and the back of the showcase body 1. However, a first air passage 25-1 and a second air passage 25-2 are formed from the upper side of the showcase body 1 to the back side.

Further, by communicating the first air passage 25-1 with the opening 19 of the ceiling wall 14, the air-cooled condenser 2 can be air-cooled.

With the above configuration, in the embodiment, the exhaust heat of the condenser 2 is used for heating during the winter. This will be explained in detail below with reference to FIGS. 4 and 7, but in general, a portion of the cold air flow from the cooler 24 leaks to the lower front of the showcase body 1, cooling the inside of the store. It is in.

Therefore, in winter, ventilation fans io and i1 are stopped and blower 1 is turned off.
Drive 6. In this way, the cold aisle accumulated in the front lower part of the showcase body 1 passes through the lower part of the showcase body 1 and cools the compressor 4. The hindlimb cold aisle is formed through the second and first air passages 25-2.25 formed from the back side to the upper side of the showcase body 1.
-1 to cool the condenser 2. The air heated by exchanging heat with the condenser 2 enters the space 26 in the attic and passes through the blower 16 to the first air conditioning opening 2 drilled in the ceiling wall 14.
It is blown out from 0 into the store and follows a circulation path as shown by the arrows below. As a result, the inside of the store is heated, reducing heating costs.

FIGS. 5 and 8 show the case where waste heat from the condenser 2 is treated during summer. As can be seen from these figures, in the summer, the operation of the blower 13 is stopped and the ventilation fans 10 and 11 are operated. In this way, the condenser 6 is cooled by the air introduced through the intake opening 26, and the exhaust heat is discharged by the ventilation fan 11 through the second air conditioning opening 21. Therefore, the exhaust heat from the condenser 2 can be processed without entering the store, so it does not become an air conditioning load, and cooling costs can be significantly reduced.

Next, in the middle period between summer and winter, as shown in FIG. A portion of the waste heat is taken into the store and the rest is discharged outside to provide appropriate heating. For this reason, ventilation fans 10.11 and blowers 16
Comfortable heating can be achieved by intermittent or controlling the rotation speed.

Although the above embodiments have been explained, the ventilation fan 10°110
Alternatively, a similar effect can be expected by providing a ventilation opening that does not create resistance to the air cooling blower 6, and the ventilation fan 11 can be mounted on the roof. Furthermore, even if the blower 16 is provided in the first air conditioning opening 20, the first air conditioning opening 2
This can be eliminated by selecting the capacity of the air cooling blower 6 to such an extent that warm air is blown out from zero.

Note that when the blower 16 is eliminated and air conditioning is performed using only the ventilation fan 10.11 as shown in FIG. 6, the air volume of the ventilation fan 10.11 is reduced by the air volume of the fan B. In this case, one way to maintain a constant temperature inside the store is to install a thermostat 1 temperature-sensing part 17, 18 in the store, and connect each thermostat to several ventilation fans and a number of ventilators. There is a way to link them individually. With this configuration, if the temperature inside the store has not reached the set temperature, air conditioning can be performed as shown in Figure 4, and if the temperature has reached the set temperature or higher, several ventilation fans will be activated, as shown in Figure 6. air conditioning. Furthermore, according to this configuration, when the outside temperature rises, the temperature-sensing part 1B of the thermostat linked to the remaining ventilation fans senses the temperature, so all ventilation fans are activated and all waste heat is discharged outdoors as shown in Figure 5. Air conditioning is available.

By the way, the temperature control method in the store described above is just one example; another method is to uniformly control the speed of all ventilation fans io and 1i and then stop them, thereby switching the air flow in six stages. . On the other hand, the air-cooled condenser 2 is not assembled into the showcase body 1 in advance, but is connected to the discharge pipe 7 and the liquid pipe 8 via a coupler (not shown) or the like when the showcase body 1 is installed. It's okay. With this configuration, the vertical moving device 5 becomes unnecessary.

As described above, according to the present invention, the exhaust heat of the condenser can be used for heating in the winter, and in the summer, the exhaust heat is discharged outside the store, so it does not become a cooling load, making it an excellent air conditioner. It is something that

[Brief explanation of the drawing]

FIG. 1(a) is a cross-sectional view showing the main body of the frozen/refrigerated showcase according to the embodiment of the present invention, and shows the case when it is delivered, and FIG. 1(b) is a similar rear view, showing the case when it is delivered. . Second
FIG. 2(a) is a cross-sectional view similar to FIG. 1(a), showing the case when installed, and FIG. 2(b) is a rear view similar to FIG. 2(b), showing the case when installed. Fig. 6 is a perspective view of the freezer/refrigeration showcase main body in the embodiment of the present invention, Fig. 4 is a schematic sectional view showing the winter operating state in the embodiment of the present invention, and Fig. 5 is the summer operation in the same embodiment. FIG. 6 is a schematic sectional view showing the operating state in the intermediate period in a similar embodiment, and FIG. 7 is a partially cutaway perspective view showing more specifically the embodiment of the present invention. Indicates the operating status during winter. FIG. 8 is a partially cutaway perspective view similar to FIG. 7, showing the operating condition in summer. 1. Freezer/refrigeration open showcase body 2... Air-cooled condenser 6. Air-cooling blower 4... Compressor
5...Vertical movement device 6...Hinge 7...Discharge pipe 8...Liquid pipe 9...Fan duct) 10.
... Ventilation fan 11... Ventilation fan 12... Duct plate 1
6... Air blower 14... Ceiling wall 15... Thumbscrew 16... Inlet 17... Temperature sensitive part of thermostat 18... Temperature sensitive part of thermostat 19... Opening 20... First air conditioning opening 21...Second air conditioning opening 22...Side wall 2ro...Intake opening 24...
・Cooler 25-1...first air passage 25-2・
・Second air passage 26... Space Figure 1 Figure 2 Figure 3 Figure 4 Figure 6 Figure 6 ■

Claims (2)

[Claims] (1) There is a first
The first air passage is connected to an air intake opening formed in the side wall leading to the outdoors, and also to an opening formed in the ceiling wall of the store, and the first air passage is connected to an air-cooled condenser and the air-cooled condenser. A blower for cooling is disposed in the first air passage, the air-cooled condenser is air-cooled with the air entering the first air passage, and the air passing through the condenser is directed to the ceiling wall. An air conditioning system in a store equipped with a showcase, characterized in that air is discharged outdoors through an opening in the interior. (2) First and second air passages are formed from the top side to the back side of the refrigeration/cooling showcase body, and the first air passage is connected to an intake opening that is bored in the side wall and leads to the outdoors. An air-cooled condenser and a blower for cooling each of the air-cooled condensers are arranged in the first air passage, and the air-cooled condenser is connected to the opening formed in the ceiling wall of the store. It is designed to be air-cooled by the air entering the store, and a first tube is installed on the ceiling wall of the store and the side wall facing outdoors
, a second air-conditioning opening is provided, and the air passing through the air-cooled condenser can be discharged into the store and outdoors through the first air-conditioning opening and the second air-conditioning opening, respectively. Air conditioning equipment in stores with showcases installed.