JPH0315998Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a built-in show case in which a refrigeration circuit is assembled to the show case body, and particularly relates to a heat exhaust structure of an air-cooled condenser.

Conventionally, an air-cooled built-in show case has a structure in which a compressor, a condenser, a blower for the condenser, etc. are installed in the machine room at the bottom of the show case body, and the heat radiated from the condenser of the air-cooled built-in show case is carried out by the show case installed. It was released inside the store. 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 inside the store, but also causes the temperature inside the store case to rise as well. 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.

In addition, since the condenser is located at the bottom of the show case, not only does it complicate the machine room, but the size of the condenser is also limited, which causes the condensation temperature to rise and the load on the compressor to increase. It had

As mentioned above, when a built-in show case with an air-cooled condenser is placed inside a store, there are problems with exhaust heat from the condenser and cold air leaking from the opening of the show case, and of course the store's air conditioning also deals with this problem. Consideration must be given to

Therefore, the purpose of the present invention is to provide a preferable heat exhaust structure for the condenser of an air-cooled built-in show case, thereby reducing the cooling load in the store during the summer and reducing the required capacity of the air conditioner. The aim is to effectively use the exhaust heat from the condenser to heat the store.

Another object of the present invention is to provide a particularly effective heat exhaust structure when a large number of air-cooled built-in show cases are connected.

The present invention will be described below with reference to embodiments and drawings.

1 and 2 show an embodiment of the heat exhaust structure of the air-cooled built-in show case according to the present invention. In FIGS. 1 and 2, an air-cooled built-in open store case 1 is installed at a location near a wall 4 on a floor 3 of a store 2. The air-cooled built-in open-show case 1 is a combination of a case body 5, a refrigeration circuit, and a suitable ventilation means. That is, the air passage 6 formed along the wall of the case body 5
An evaporator 7 and an internal fan 8 are arranged at the bottom of the case body 5, and a hermetic compressor 9 is arranged at the bottom of the case body 5, while a condenser 11 and a condenser fan 12 are arranged at the top wall 5a of the case body 5. There is. It goes without saying that the evaporator 7, hermetic compressor 9, and condenser 11 constitute one refrigeration circuit.

A heat exhaust duct forming plate 14 (or a descending wall) is provided between the top wall 5a of the case body 5 and the ceiling 13 of the store 2, and between this heat exhaust duct forming plate 14 and the wall 4 of the store 2. A first duct 15 for exhaust heat is formed which is substantially separated from the store 2. The exhaust heat duct forming plate 14 has a first duct 15 and a store 2.
A first exhaust port 16 is formed which communicates with the
7 are arranged. Further, one longitudinal end of the first duct 15 for exhaust heat is connected to a duct forming plate 1 for exhaust heat.
4a, and within the first duct 15,
A second exhaust port 18 is formed in the wall 4 of the store 2 in the longitudinal direction of the first duct 15 and communicates the other end of the exhaust heat duct forming plate 14a with the outside of the store.

Further, a gap is provided between the back wall 5b of the case body 5 and the wall 4 of the store 2 to form the second duct 19, and a comparison of the wall 4 corresponding to the back wall 5b of the case body 5 is made. Below the target is the first intake port 2
form 0. The second duct 19 communicates with the outside of the store via a first intake port 20, and an intake fan 21 is connected to the first intake port 20.
is installed.

Furthermore, a third duct 23 is formed, which is a space surrounded by the bottom wall 5c of the case body 5, the decorative panel 22 (or kick plate) at the lower front of the open store case 1, and the floor surface 3 of the store 2,
A second air intake port 24 is provided at the lower front of the case body 5.
A damper 25 is provided at the second intake port 24. The second intake port 24, the third duct 23, the second duct 19, the first duct 15, and the first and second exhaust ports 16 and 18 form a communicating ventilation path, and the first duct 15
The condenser 11 and a condenser fan 12 for blowing air through the condenser 11 to the first and second exhaust ports 16 and 18 are provided inside.

Note that 26 is a shutter disposed at the first exhaust port 16, 27 is a shutter disposed at the second exhaust port 18, 28 is a shutter disposed at the first intake port 20, and 29 is a first intake port. A dustproof filter 30 provided at the mouth 20 is provided between the wall 4 and the upper end of the condenser 11, and is provided between the second duct 19 and the first duct 15.
This is a partition plate that separates the

Further, in the above description, the first duct 15 for exhaust heat is formed using the ceiling 13 of the store 2, but it is formed separately from the ceiling 13, and a flat plate is disposed in place of the ceiling 13. It goes without saying that the duct 15 may also be formed.

In the present invention constructed as described above, the exhaust heat from the condenser 2 is used for heating during the winter. This will be explained in detail below with reference to FIGS. 2A and 2B, but generally speaking, part of the cold air flow from the evaporator 7 leaks to the lower front of the open store case, cooling the inside of the store. be.

Therefore, in winter, the operation of the intake fan 21 is stopped, the second exhaust port 18 is closed, the damper 25 provided at the second intake port 24 is opened, and the first exhaust port 16 is opened. Exhaust fan 1
Drive 7. In this way, the cold aisle remaining at the lower front of the case passes through the third duct 23 formed at the bottom of the case body 5 and cools the compressor 9. Thereafter, the cold aisle passes through a second duct 17 formed on the back of the case body 5, undergoes heat exchange in the condenser 11 disposed on the top wall 5a of the case body 5, becomes warm air, and flows into the first duct 15. enter. The warm air is blown out into the store 2 from the first exhaust port 16 provided in the exhaust heat duct forming plate 14 through the exhaust fan 17, and follows a circulation path as shown by arrows below. This allows the store to be heated, reducing heating costs and eliminating cold aisles.

FIGS. 1A and 1B show a case in which exhaust heat from the condenser 2 is treated in summer. As can be seen from these figures, in the summer, the first exhaust port 16 is closed to stop the operation of the exhaust fan 17, and the second intake port 24 is closed by the damper 25, so that the first intake port 20 is opened to operate the intake fan 21, and at the same time, the second exhaust port 18 is opened. In this way, air from outside the store is sucked in through the first intake port 20. The air then passes through the second duct 19 and is heat exchanged in the condenser 11 disposed on the top wall 5a of the case body 5. At this time, exhaust heat (warm air) generated from the condenser 11 enters the first duct 15 and is discharged from the second exhaust port 18 to the outside of the store. Therefore, the waste heat from the condenser 11 can be disposed of without entering the store, and the cold aisle that leaks from the front opening of the show case and stays in the store 2 contributes to cooling the store, reducing waste heat in the summer. This prevents the temperature inside the store from rising due to heat, reduces the cooling load in the store, and reduces the capacity of the air conditioner, resulting in a significant reduction in cooling costs.

In addition, in the above description, the back wall 5 of the case body 5 is connected so that the first intake port 20 is directly connected to the second duct 17.
Although the case where the third duct 2 is formed on the wall 4 corresponding to b is explained, as shown in FIGS. 3 and 4, the third duct 2 is formed on the bottom of the case body 5.
A first air intake port 20' may be formed in the wall 4 of the store 2 behind the store 3 and corresponding to the lower part of the second duct 19. According to the above configuration, air from outside the store can be sucked in through the first intake port 20' during the summer, and the air can be ventilated through the third duct 23 to the second duct 19. Even when the show cases with built-in formulas are connected and placed in the store 2, a large amount of outside air can be blown through the third duct 23, and the outside air can be used to blow the outside air into the third duct 23. The compressor 9 can be cooled.

Furthermore, although the embodiments have been described above, as for the air blowing means, an intake fan and an exhaust fan may be attached to each of the first and second intake ports and the first and second exhaust ports. Alternatively, by selecting the capacity of the condenser fan, the intake fan and exhaust fan can be eliminated, and the installation of the intake fan and exhaust fan can be determined depending on the conditions of the store.

Furthermore, as shown in FIG.
A second exhaust port 18' is provided in the ceiling 13 that communicates between the ceiling 13 and the attic 31, and a ventilation opening (not shown) that communicates the attic 13 with the outside of the store allows the first duct 15 to be connected to the store. A heat exhaust ventilation path may be formed from the second exhaust port 18'→the ceiling 31→the ventilation port→the outside of the store.

As described above, according to the present invention, an air-cooled condenser 11 and a condenser fan 12 are arranged on the top wall 5a of the case body 5, and a built-in case is used by connecting a plurality of case bodies 5a. In the heat exhaust structure, a first duct 15 for exhaust heat is formed to extend horizontally between the top wall 5a of the case body 5 and the ceiling 13 of the store 2, and a back side of the case body 5 is provided. A second duct 17 is formed to extend horizontally between the wall 5b and the store wall 4, and a second duct 17 is formed between the bottom wall 5c of the case body 5 and the floor surface 3 of the store 2. 3 duct 23, the second
The duct 17 has one end in the longitudinal direction leading to the outside of the store via a first intake port 20 provided at the lower part of the wall 4 of the store, and the first duct 15 has a first exhaust port 16 at the front side. The first intake port 20, which communicates with the store 2 via the store 2 and the outside of the store of the second duct 17, is a second exhaust port provided in the upper part of the store wall 4 at the other end in the longitudinal direction. The third duct 23 and the store 2 are connected to the outside of the store via a second air intake port 24 provided at the lower front of the show case. from the second intake ports 20, 24 to the first and second exhaust ports 16, 1 through the condenser 11.
8, and the first and second air intake ports 20, 24 and the first,
Since the air-cooled built-in show case has a heat exhaust structure in which the second exhaust ports 16 and 18 can be selectively opened and closed, the condenser generates heat when the air-cooled built-in show case is operated. However, in the winter, store 2 → second intake port 24 → third duct 23 → second duct 19 → condenser 11 → condenser fan 12 → first duct 15 → first exhaust port 16 →
Since a circulation ventilation path consisting of the store 2 is formed, it is possible to eliminate the cold aisle that accumulates at the lower front of the show case, and the exhaust heat from the condenser can contribute to heating. Also, in the summer, outside the store → first intake port 20 → (third duct 23)
→ Second duct 19 → Condenser 11 → Condenser fan 12 → First duct 15 → Second exhaust port 18 → Since a ventilation path is formed from outside the store, the temperature inside the store increases due to the exhaust heat of the condenser. In addition to reducing the cooling load in the store, the required capacity of the air conditioner can be reduced, and the running costs of the in-store air conditioner and built-in show case can be prevented from increasing.

Further, since the first exhaust port is provided on the front surface of the first duct, it is easy to open and close the first exhaust port, and at the same time, it is easy to check the operating state inside the first duct and perform maintenance. In addition, since the first duct can be made wider, the air that has passed through multiple condensers stays in the first duct and is then discharged evenly from the first outlet, allowing stable heating of the store in the winter. .

In addition, the third duct formed between the bottom wall of the case body and the floor of the store can be used as a ventilation path for the condenser cooling air, so a large amount of air can be blown and a large number of store cases can be blown. A particularly effective heat dissipation structure for the built-in case can be obtained when connected.

Further, according to the present invention, the store can be kept in a comfortable state at all times by changing the dampers and fans depending on the season or the mood.

Furthermore, since the first intake port is located at the bottom of the wall of the store, it is possible to draw in outside air that has become cold due to the influence of geothermal heat in the summer, increasing the heat exchange efficiency of the condenser. Since the intake port and the second exhaust port are located on opposite ends of the store wall both vertically and longitudinally, short cycles can also be prevented. The condenser and the condenser fan are arranged on the top wall of the show case body, and the first intake port and the second exhaust port are arranged in the vertical direction.
Because it is located on the store wall at the opposite end in the longitudinal direction, when multiple show case bodies are connected and used, the amount of air passing through each condenser is equal, and the ventilation distance from the first intake port to the second exhaust port is is the same no matter which condenser it passes through, so heat can be dissipated uniformly from each case. This is especially effective during high loads in the summer.

[Brief explanation of drawings]

Fig. 1 shows the operating state in the summer season in the embodiment of the present invention, A is a schematic sectional view, B is a partially cutaway perspective view, and Fig. 2 shows the operating state in the winter season in the embodiment of the present invention, A is a schematic sectional view. A schematic cross-sectional view, B is a partially cutaway perspective view, FIGS. 3 and 4 show other embodiments of the present invention, FIGS. 3 A and B correspond to the above-mentioned FIGS. FIGS. A and B correspond to FIGS. 2A and B, and FIG. 5 shows another embodiment of the present invention, and corresponds to FIG. 1A. 1... Air-cooled built-in open case, 2...
...Store, 4...Wall, 5...Case body, 5a...
Ceiling wall, 5b... back wall, 5c... bottom wall, 11... condenser, 12... condenser fan, 13... ceiling,
15...first duct, 16...first exhaust port, 1
8, 18'...Second exhaust port, 19...Second duct, 20, 20'...First intake port, 24...Second intake port, 23...Third duct.

Claims (1)

[Scope of utility model registration request] An air-cooled condenser and a condenser fan are arranged on the top wall of the case body, a compressor is arranged under the bottom wall of the case body, and a built-in case body is used by connecting a plurality of case bodies. A first duct for exhaust heat formed to extend horizontally between the top wall of the case body and the ceiling of the store; and a first duct for discharging heat formed to extend horizontally between the top wall of the case body and the store wall; a second duct formed to extend long; and a third duct formed to extend horizontally between the bottom wall of the case body and the floor of the store; , the third duct communicates in the longitudinal direction, and the second duct connects to the store via a first intake port provided at one end in the longitudinal direction at a lower part of the store wall and at a position corresponding to the back of the third duct. The first duct communicates with the store via a first exhaust port on the front side, and the second duct communicates with the outside of the store at the other end in the longitudinal direction. It leads to the outside of the store via a second exhaust port installed in the upper part of the store wall at a certain position, and the third
The duct and the store communicate through a second intake port provided at the lower front of the show case, and the condenser fan is passed through the condenser from the first and second intake ports to the first and second exhaust ports. An exhaust system for an air-cooled built-in show case, characterized in that the first and second intake ports and the first and second exhaust ports can be selectively opened and closed. thermal structure.