JPS5819678A - Refrigeration showcase - 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] This invention relates to a refrigerated showcase for keeping display products such as fruits and vegetables and meat cool, and more specifically, a refrigerating showcase that incorporates a condensing sink unit consisting of a compressor, a condenser, a fan, etc. Concerning built-in showcases, there have been two types of showcases of this type: one in which the above-mentioned unit is installed at the bottom of the case body, and another in which it is installed at the top of the case body. In other words, in the former case, even if the aforementioned unit is made as small as possible and its installation space is reduced, the lower part of the case body will inevitably become higher and the front height cannot be reduced, making it difficult to display products. I can't improve my sexuality.

Exhaust heat treatment is difficult. In other words, although the condenser and compressor are cooled by the outside air (air inside the store) taken in from the lower front of the case body, the hot air that absorbs heat can be effectively disposed of, so a heat exhaust duct is installed in the wall of the store. We had to deal with the constraints of installing the case in bulk, creating a large passageway for heat exhaust between the case body and the wall, and having to deal with the installation constraints. In addition, fan noise (operating noise, wind noise, etc.) is emitted from the bottom of the front of the case toward the user's feet, causing discomfort. On the other hand, in the latter case, the overall height of the case is large and it is installed in stores with low ceilings. It is considered difficult and unsuitable for implementation.

Furthermore, since the heavy object (unit) is located at a high place, the case body does not need to have a fairly strong structure, which increases costs and makes maintenance difficult.

Similar to the above, exhaust heat treatment becomes difficult. In other words, after the condenser and compressor are cooled by outside air taken in from the upper front of the case body, the warm air that absorbs heat tends to become stuck between the top of the case body and the ceiling of the store, so it cannot be properly disposed of. do not have.

This causes troubles such as short cycles and stopping of the refrigerator (unit) due to high pressure cut as the temperature of the hot air increases. In addition, there are various drawbacks such as the very large temperature difference between the top and bottom around the case body, and the fact that the noise from the fan and compressor is emitted towards the user's head, which gives a pleasant sensation of cine. In view of the problems of conventional showcases, the present invention is a refrigerated showcase with new innovations in the installation technology of the condensing unit on the case body, as well as in the exhaust heat and noise treatment technology.The purpose of the present invention is to display The purpose is to improve the displayability of products, reduce discomfort to users, eliminate various troubles, and simplify installation and maintenance.

The present invention will be explained below based on examples. In the refrigerated showcase of this example, as shown in Fig. 1, as a basic example, a duct for exhaust heat is installed along the periphery of the case body 1 installed at a predetermined location in the busy store, and constitutes a series of outside air circulation paths. The condensing unit is installed separately using this duct 2.

In the duct 2, an intake port 2a for outside air is formed between the lower part 1a of the case body 1 and the bottom plate 8, and an intake passage 2b that also serves as a storage room is formed between the lower inclined part 1b and the bottom plate 8 and the back plate 4. A flow passage 2C is formed between the rear IC of the case body 1 and the back plate 4, a delivery passage 2d is formed between the upper oblique part 1d of the case body 1 and the back plate 4, and a flow passage 2C is formed between the upper part 1e and the back plate 4. A hot air outlet 2e is formed between the plate 4 and the plate 4 to communicate with each other. 5 indicates an air exhaust path.

Corresponding to such a duct 2, in the unit, a compressor 6 with a large summer capacity is housed and installed in the suction passage 2b, and a relatively lightweight condenser 7 is installed in the outlet 2e with a buried surface different from the upper part 1e.
(same height), and a fan 8 for the condenser 7 is installed in the sending path 2d. The cold air circulation system is the same as before, so a description will be omitted. Incidentally, 9 is a cooling fan, 10 is an evaporator, and 11 is a cold air delivery device.

In the showcase of this example configured as described above, the operation of the fan 8 allows the outside air A to flow in from the suction port 2& of the duct 2, and the outside air A flows from the suction path 2b to the flow path 2.
The compressor 6 is cooled in the process of flowing to C, and then the condenser 7 is cooled in the process of flowing from the flow path 2C to the delivery path 2d and the delivery port 2e. to be discharged. Thereafter, the duct 2 can be used in the same way to quickly infuse outside air and exhaust hot air At, and to ensure a large air flow that encircles the case body 1 along a certain distribution route. Therefore, exhaust heat treatment can be carried out continuously and efficiently.

Also, by separating the compressor 6 and fan 8,
The noises generated during both operations do not increase synergistically, but rather can be suppressed as individual noises. Particularly when viewed in relation to the above-mentioned "air flow", the noise N1 from the compressor 6 is not emitted outside the front of the case body 1 from the inlet 2a, but rather flows into the flow path 2C by riding on the outside air and is appropriately reduced. Also, even if the noise N2 from the fan 8 is multiplied by the hot air A1 and released into the air exhaust path 5, it will be diffused along the ceiling of the store and will be gradually muffled. This can be expected to have a considerable effect on noise suppression.

The technique of the present invention shown in the basic example described above can be applied to each part, and can be applied in various forms! 4 I/C can be developed and implemented. For example, as shown in FIG. 2, a compressor 6 is installed in the lower part la (part of the cooling path) of the case body 1 and covered with a removable heat insulating cover 12.

According to this, a great noise effect can be expected, and inspection, maintenance, and replacement of the compressor 6 will be facilitated. Moreover, the case body 1
A part of the duct 2 together with the lower part 1a and the rear IC can be made simple in shape, and the suction passage 2b can be made to have the minimum necessary space, so that the front height H can be made as low as possible as in the case of FIG. By the way, in the previous case, the limit was 660 at most, but in this example, it was 450 to 400. can be ranked.

In addition, when installing the fan 8 inside the condenser 7,
As shown in FIG. 8, a ceiling heat exhaust duct 18 can be installed outside the condenser using the space of the air exhaust path 5. According to this method, the hot air A1 can be quickly discharged from the duct 1g VC to an appropriate location to enhance the exhaust heat treatment effect, and there is no need to unnecessarily penetrate the walls and ceiling of the store, making the duct 18 inexpensive. It can be installed easily. -10,000 J! As shown in Fig. 4, the fan 8 can be installed outside the condenser 7 using the space of the air exhaust path 5, which makes the outlet path 2d of the duct 2 the minimum space required and makes the internal volume more effective. It can be widely used.

If the technique of installing the fan outside as described above is applied, the collection duct 14 can be connected between each showcase I/C' on the upper side of the coidenser 7 as shown in FIG. It is also possible to provide 14 and install a concentration 7 an 8 for exhaust heat in a part (end or center). According to this K, excellent effects on waste heat treatment and noise treatment can be expected. Note that one end of the collection duct 14 may be extended outside the store. In any of the above application examples, the duct 2 around the case body 1 may be formed by omitting the bottom plate 8 and the back plate 4 and using the floor and wall surfaces in the store. The techniques illustrated in the figures can of course be implemented for a two-layer air curtain type showcase.

In this way, the refrigerated showcase of the present invention utilizes a series of heat exhaust ducts formed on the bottom, back, and top surfaces of the case body to ensure air flow from outside air inflow to warm air exhaust, thereby discharging heat. Since it can effectively reduce temperature fluctuations especially around the case and even inside the store,
Various troubles and installation restrictions can be resolved. In addition, by separately installing each device that makes up the condensing unit in the upper and lower parts of the case body, the height of the case body can be made as low as possible by 70 tons, improving the displayability of displayed products. The overall height can be reduced to make the installation easier, especially if the height of the cabinet is the same as that of the previous showcase, the interior storage area can be expanded. Moreover, the structure must be unnecessarily strong! 1! It is extremely inexpensive and maintenance is easy. Moreover, the noise from the pump and condenser fan can be effectively alleviated, and in combination with the above-mentioned exhaust heat treatment effect, the discomfort to the user can be reduced.

Therefore, the present invention is based on the above-mentioned installation technology and exhaust heat treatment technology for cold ml! This is an epoch-making creation of the I'll-case, and can skillfully eliminate the various drawbacks of the conventional ones mentioned at the beginning.

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings schematically illustrate embodiments of the present invention, and FIG.
Figure 2 is a side sectional view showing a basic example of a W-case, Figure 2 is a side sectional view showing an example of compressor ff+ installation, Figure 311 is a perspective view showing an example of ceiling heat exhaust duct installation, Figure 4 is an example of fan installation. No. Sa is a side sectional view showing an example of installation of a collection duct and a fan. 1-Case body 2-Ducce 5-Exhaust passage 6-3 Nb V-Tsu 7-Complete?
8-Fanmu outside air 1-Warm wind Nl, N2...Noise Patent applicant Fuji Electric Manufacturing Co., Ltd. Agent Patent attorney Oka 1) Hidehiko Figure 1 5 No. 2150

Claims (1)

[Claims] A series of heat exhaust ducts are formed across the bottom, back and top of the case body to discharge hot air from outside air, and a compressor is installed at an appropriate position at the bottom of the case body. A refrigerated showcase comprising: a condenser installed on the outlet side of the duct, and a fan for the condenser installed at an appropriate location inside or outside the duct.