JPH0225110Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Technical field The present invention relates to a show case, generally called a built-in show case, in which a refrigeration circuit condenser is assembled to the show case body, and in particular relates to the heat exhaust structure of an air-cooled condenser. It is something.

(b) Prior art Conventionally, an air-cooled built-in show case has a structure in which a compressor, a condenser, a condenser blower, etc. are installed in the machine room at the bottom of the show case body, and heat radiation from the condenser of the air-cooled built-in show case is carried out by the air-cooled built-in show case. It was released inside a store where a was installed. Therefore, in the summer, the waste heat that accumulates inside the store hinders the cooling of the store, which not only causes a lack of capacity in the store's air conditioner, but also increases the running cost of the case and air conditioner. Furthermore, if the capacity of the air conditioner is insufficient, this waste heat not only raises the air temperature in the store, but also causes the temperature inside the store case to rise. Furthermore, in the winter, cold air leaking from the opening of the store case interferes with heating the store, necessitating an increase in the air conditioning capacity of the store's air conditioner.

Therefore, in the past, the applicant has proposed a heat exhaust structure that is preferable for the condenser of an air-cooled built-in show case, which reduces the cooling load in the store in the summer, reduces the required capacity of the air conditioner, and improves the heating of the store in the winter. We are proposing something that can effectively utilize the exhaust heat of the condenser.

That is, as shown in FIGS. 1 and 2, the top wall 2a of the case body 2 of the air-cooled built-in open case 1
a first duct 5 formed between the case body 2 and the ceiling 4 of the store 3; a second duct 7 formed between the back surface 2b of the case body 2 and the wall 6 of the store 3; and a third duct 9 formed between the bottom wall 2c of The duct 5 and the outside of the store communicate with each other through a second exhaust port 11, and the third duct 9 and the store communicate with each other through a second intake port 12 provided at the lower front of the show case. The second duct 7 is communicated with the second duct 7 through a first intake port 13 provided in the wall 6 of the store, and air is vented from the condenser 14 and the intake ports 12 and 13 to the exhaust ports 10 and 11 through the condenser 14. This is a heat exhaust structure of an air-cooled built-in show case in which an air blowing means 15 is provided in the first duct 5.

In addition, in the figure, 17 is an evaporator, and 18 is an internal fan.

The operation of this structure in winter and summer will be explained respectively.

First, in winter, the exhaust heat from the condenser 14 is used for heating (Fig. 2).

That is, the operation of the intake fan 20 is stopped, the second exhaust port 11 is closed, and the second intake port 1 is closed.
At the same time as opening the damper 21 provided in the first
The exhaust port 10 is opened and the exhaust fan 15 is operated. In this way, the cold aisle remaining at the lower front of the case passes through the third duct 9 formed at the bottom 2c of the case body 2 and cools the compressor 22. Thereafter, the cold aisle passes through the second duct 7 formed on the back of the case body 2, heat is exchanged in the condenser 14 disposed on the top wall 2a of the case body 2, and becomes warm air that flows into the first duct 5. enter. Then, the warm air is blown out into the store 3 from the first exhaust port 10 through the exhaust fan 15, and follows a circulation path as shown by arrows below. As a result, the inside of the store 3 is heated, and heating costs are reduced.

Next, the exhaust heat treatment of the condenser 14 in summer will be explained (FIG. 1).

First, the first exhaust port 10 is closed to stop the operation of the exhaust fan 15, the second intake port 12 is opened to operate the intake fan 20, and the second exhaust port 11 is opened. Make it. In this way, air outside the store is sucked in through the first intake port 13, passes through the second duct 7, and undergoes heat exchange in the condenser 14 disposed on the top wall 2a of the case body 2. At this time, exhaust heat (warm air) generated from the condenser 14 enters the first duct 5 and is discharged to the outside of the store from the second exhaust port 11. Therefore, the exhaust heat of the condenser 14 can be processed without entering the store, and does not have any effect on the cooling inside the store.

(C) Conventional Problems However, in general, it is not possible to install a show case in a store and make the second duct formed by the back of the show case and the wall completely free of gaps.

That is, a gap was created around the cavity (duct) formed by the side plate and wall around the show case due to the technology and construction conditions at the time of installation. Under these circumstances, according to the conventional configuration, the first intake port that sucks air from outside the store is located at the center of the second duct, so the air is sucked from the air intake port into the condenser. The problem is that the distance is long, and in the summer, high-temperature outside air taken in by the intake fan enters through the gap and raises the temperature of the air inside the room.

(d) Purpose of the present invention The present invention utilizes the exhaust heat from the condenser installed outside the air-cooled built-in show case to heat the store in the winter.
If the structure is designed to exhaust the outside air together with the outside air taken in from the outside during the summer, this will prevent outside air from entering the store during the summer and prevent the temperature from rising. The purpose is to make the structure simple and simplify the heat exhaust structure.

(E) Structure of the present invention According to the present invention, in the heat exhaust structure of a built-in show case in which an air-cooled condenser is assembled to the case body, a cooling pipe is formed between the top wall of the case body and the ceiling of the store. 1 duct, which is formed to extend along the upper surface of the ceiling wall of the case body from between the back part of the case body and the wall of the store, and whose upper end located on the ceiling wall is connected to the first duct. a third duct formed between the bottom wall of the case body and the floor of the store, the rear end of which is connected to the lower end of the second duct; The second duct has a first exhaust port opening inward and a second exhaust port formed in the wall of the store, and the second duct has a first air intake port formed in the wall of the store above the top wall of the case body. The third duct has a second intake port that opens into the store, and the condenser and a condenser fan for ventilation through the condenser are installed near the upper end of the second duct. provided in the first
A ventilation fan for discharging the air in the duct from the second exhaust port is provided in the first duct, a shutter that opens and closes by external operation is provided at the first intake port, and a shutter for opening and closing the condenser is provided at the first exhaust port. There is obtained a heat exhaust structure for an air-cooled built-in show case characterized in that a shutter that opens and closes by the wind pressure of a fan is provided at the second exhaust port, and a shutter that opens and closes by the wind pressure of the ventilation fan is provided at the second exhaust port.

(f) Embodiments of the present invention Hereinafter, the present invention will be explained based on the embodiments shown in the drawings, with respect to the differences from the conventional ones.

Reference numeral 30 denotes a first duct, and a first exhaust port 32 is provided in the partition plate 31, and a second exhaust port 33 is provided in the wall 6. Each exhaust port 32, 33 has a shutter 3, respectively.
The shutter 34 of the first exhaust port 32 is opened by the wind pressure of the condenser fan 23, and the shutter 35 of the second exhaust port 33 is opened and closed by the wind pressure of the ventilation fan 36. 37 is a second duct, which differs from the conventional example in that the first intake port 38 is located above the vicinity of the top wall 2a of the case body 2, and is provided with a shutter 39 that can be opened and closed manually or electrically. The shutter opens when the ventilation fan 36 rotates, and closes when it stops.

The shutter 34, as shown in FIG.
It is rotatably provided by. 45 is a stopper. A damper 46 is provided at the same height as the top wall 2a of the case body 2, and opens and closes the second duct manually or electrically.

In such a structure, in winter, the ventilation fan 36 is stopped, the shutter 39 is closed, and the damper 46 is open.

In this state, when the refrigeration circuit of the store case 1 is operated and the condenser fan 23 is rotated, the air in the store sucked in from the second intake port 12 passes through the third duct 9 and the second duct 37. After being heated by the condenser 14, the air is discharged into the store through the first exhaust port where the shutter 34 is opened by the wind pressure of the condenser fan 23. On the other hand, since the shutters 35 and 39 are closed, outside air does not enter inside. Therefore, the interior of the store is heated by the exhaust heat from the condenser.

Note that since the shutter 35 is located far from the condenser fan 23, it will not open due to the wind pressure of the fan 23.

On the other hand, in the summer, contrary to the winter, the ventilation fan 36 rotates and the shutter 35 is opened by the wind pressure, and the shutter 39 is also opened by manual or electric operation. Further, the shutter 34 automatically closes because the inside of the first duct is in a negative pressure state due to the rotation of the large ventilation fan 36.

Therefore, the air inside the store is not sucked in, and the outside air is sucked in through the first intake port 38 and exhausted from the second exhaust port together with the exhaust heat of the condenser 14, thereby cooling the store. has no effect on

(g) Effects of the present invention As described above, the present invention has a structure in which the outside air intake port is provided on the wall above the vicinity of the ceiling wall of the air-cooled built-in open-air case, so the outside air passes through each duct. The distance between the air conditioner and the air conditioner is short, and the location is above the ceiling wall, where the gaps that occur due to the installation technology of the case are not created. There is nothing.

Furthermore, the structure allows for a simple heat exhaust structure because the shutter that opens and closes the exhaust port that communicates the outside air with the room is opened by the wind pressure of the condenser fan, and closed by the ventilation fan that discharges the waste heat from the condenser to the outside. It is an extremely useful device with a simple structure.

[Brief explanation of the drawing]

Figures 1 and 2 are conventional examples, Figure 1 is a summer usage diagram, Figure 2 is a winter usage diagram, Figures 3 to 6 are examples of the present invention, and Figure 3 is a summer usage diagram. Fig. 4 is a usage state diagram in winter, Fig. 5 is a perspective view of the shutter 34, and Fig. 6 is A-A in Fig. 5.
FIG. In the figure, 1 is an air-cooled built-in open case;
2 is the case body, 2a is the top wall, 2b is the back wall, 2c
is the bottom wall, 3 is the store, 4 is the ceiling, 5 and 30 are the first duct, 6 is the wall, 7 and 37 are the second duct, 9 is the third
Duct, 10 and 32 are first exhaust ports, 11 and 33
is the second exhaust port, 12 is the second intake port, 13 and 3
8 is a first intake port, 14 is a condenser, 34, 35, and 39 are shutters, 36 is a ventilation fan, and 46 is a damper.

Claims (1)

[Scope of utility model registration request] In the heat exhaust structure of a built-in show case in which an air-cooled condenser is assembled into the case body, a first
a duct, the duct is formed to extend along the upper surface of the ceiling wall of the case body from between the back part of the case body and the wall of the store, and the upper end located on the ceiling wall is connected to the first duct; a second duct formed between the bottom wall of the case body and the floor of the store;
a third duct whose rear end is connected to the lower end of the second duct, the first duct having a first exhaust port opening into the store and a second exhaust port formed in the wall of the store. The second duct has a first intake port formed in the wall of the store above the top wall of the case body, and the third duct has a second intake port formed in the store wall above the top wall of the case body.
The condenser and a condenser fan for ventilation through the condenser are provided near the upper end of the second duct, and the air in the first duct is directed to the second exhaust port. The ventilation fan that discharges more air is connected to the first
A shutter is provided in the duct, and the first intake port has a shutter that opens and closes by external operation, the first exhaust port has a shutter that opens and closes by the wind pressure of the condenser fan, and the second exhaust port has a shutter that opens and closes by external operation. The heat exhaust structure of the air-cooled built-in shutter case features a shutter that opens and closes depending on the wind pressure of the ventilation fan.