JPH0518652A - Refrigerating plant - Google Patents

Abstract

PURPOSE:To build arm apparatus compact, cut the cost down, make temperature controls easy, and prevent a room on the lower temperature side from entering a negative pressure region by employing a sole refrigerating plant operation type in which a refrigerating plant is commonly used for cooling a plurality of rooms to different temperatures. CONSTITUTION:An evaporator 10 is installed in a room 1 with a lower cooling temperature, and air in the room 1 and air in a room 2 with a higher cooling temperature are led to the air inlet side of the evaporator 10. A large portion of the air flow from the air outlet of the evaporator 10 is supplied to the room 1 with a lower cooling temperature, and the rest of the air flow to the room 2 with a higher cooling temperature.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an integrated refrigerating apparatus which can be shared by a plurality of rooms which should have different refrigerating temperatures.

[0002]

2. Description of the Related Art One is for freezing in a temperature range of -30 to -5 ° C, and the other is for a storage room in which two chambers of different cooling temperatures which require refrigeration in a temperature range of -5 to + 25 ° C are integrated. hand,
In the conventional refrigeration system, a dedicated cooling unit is individually arranged in each room, and a heat insulating layer is generally required for each unit.

[0003]

The above-mentioned prior art has a problem in that the cost of the apparatus rises and the structure is complicated, which is not practical. On the other hand, there is a prior art in which a cooling device can be commonly used for two rooms with a single structure.
It is known from 6383 and JP 1-212881. The former is a refrigerating apparatus with a heating device that circulates the air in the first heat-insulating chamber having the cooling means and the air in the second heat-insulating chamber having the heating means by the circulation means, and two devices for heating and freezing. However, it is necessary to adjust the air flow rate of the circulation means in order to have a temperature difference in the heat insulation box, and it is undeniable that this is a troublesome control.

On the other hand, the latter has a structure in which a cooling device is shared by, for example, three adiabatic warehouses, but a fan capable of adjusting the air volume is provided in the adiabatic warehouse where a minimum temperature range is required.
The other insulation boxes have a damper for controlling the air flow rate, and there are as many as three control targets, and temperature control is complicated due to temperature interference in each insulation box, and the temperature control is highly accurate. There is a difficulty that you cannot do.

It is an object of the present invention that the cooling device for a plurality of chambers to be cooled can be an integral type having a true single structure including the air blowing means, and can ensure different cooling temperatures. This is to provide a refrigerating apparatus which can be maintained and can be made compact and low in cost, and which can facilitate temperature control.

[0006]

According to the present invention, an evaporator 10 is provided in a room 1 having a low cooling temperature, out of a plurality of rooms 1 and 2 which should have different cooling temperatures, so that a room 2 having a high cooling temperature is provided. The air and the air in the room 1 having a low cooling temperature are transferred to the evaporator 1
0 is introduced to the air inlet side, and a large flow rate of air on the air outlet side of the evaporator 10 is introduced to the room 1 having a low cooling temperature, and a small flow rate of the remaining air is introduced to the room 2 having a high cooling temperature. It is a characteristic refrigerating device.

[0007]

According to the present invention, the air passing through the evaporator 10 which is shared by a plurality of rooms 1 and 2 and which is provided in the room 1 having a low cooling temperature has more air in the room 1 having a low cooling temperature and a higher cooling temperature. Since the room 2 of the room 2 is distributed and guided so as to be less, the room 2 of the high cooling temperature and the room 1 of the low cooling temperature which are usually kept at the atmospheric pressure are the evaporators. Therefore, it is possible to prevent the absolute value of the negative pressure state from becoming large with respect to the negative pressure state that occurs when the temperature is extremely low, and it is easy to open and close the door. Become.

Further, according to the present invention, it is of course possible to use the plurality of rooms 1 and 2 as a freezer or a refrigerator.

The distribution of the cool air introduced from the evaporator 10 to the rooms 1 and 2 is easily adjusted by adjusting the cross-sectional area of the passage on the air outlet side, for example, the duct. It is of course possible to use the device together, and in any case, the cooling temperature can be easily controlled by adjusting the air flow distribution between the two rooms 1 and 2.

[0010]

1 is a schematic structural view showing an embodiment of the present invention, and FIG. 2 is a plan view of a cooling unit 5 in FIG.

A plurality of, for example, two chambers 1 and 2 to be cooled
Are adjacent to each other via the heat insulating partition wall 3 and are surrounded by the heat insulating wall. One room 1 is
Used as a freezer kept at a low cooling temperature, -3
The room 2 is cooled to a desired temperature in the range of 0 ° C to -5 ° C, and the other room 2 is used as a refrigerator kept at a high cooling temperature and cooled to a desired temperature in the range of -5 ° C to + 25 ° C.

Refrigerating device 4 for cooling both rooms 1 and 2
Is composed of a cooling unit 5 and an outdoor unit 6 which are partitioned by a heat insulating partition 22, and the cooling unit 5 penetrates the heat insulating wall 3 and most of the cooling unit 5 is located in the room 1 which is a freezer. The outdoor unit 6 is mounted on the ceiling walls over the insides of the rooms 1 and 2, and is mounted and fixed on the rooms 1 and 2.

In the cooling unit 5, the expansion means 9, the evaporator 10 and the indoor fan 12 are housed, while in the outdoor unit 6, the compressor 7, the condenser 8 and the outdoor fan 11 are for outdoor use. The equipment is housed and a well-known refrigeration cycle is formed between both units 5 and 6.

In the cooling unit 5, the evaporator 10 and the indoor fan 12 are housed in a casing on the freezer 1 side, and the cooling unit 5 faces the air outlet side of the evaporator 10 to guide a large flow rate of blown air. The first outlet port 15 is provided so as to open in the freezer 1, and an outlet air passage 17 for guiding the remaining small flow rate of the outlet air is provided in the casing on the freezer 1 side by extending to the heat insulating partition 22 in the casing. Has been
Further, the inside of the casing on the side of the room 2 which is a refrigerator is divided into two chambers, one of which is a suction chamber having the second suction port 14 opened and the other of which is a blowing chamber having the second outlet 16 opened. The suction chambers formed respectively communicate with the air inlet sides of the evaporator 10 and the indoor fan 12 by the suction air holes 18 provided through the heat insulating partition 22, and the blow chambers are provided through the heat insulating partition 22. The blown-out air passage 1 is formed by the blown-out air hole 19 formed.
It communicates with 7.

On the freezer 1 side of the cooling unit 5,
A first suction port 13 is provided which opens in the freezer 1 and faces the air suction side of the indoor fan 12.

With the refrigerating apparatus 4 having the structure described above,
The operation of simultaneously cooling the freezer 1 and the refrigerator 2 is performed as follows. When the compressor 7, the outdoor fan 11, and the indoor fan 12 are started to enter the freezing operation, the indoor fan 12
The air blown out from the evaporator 10 is cooled in the evaporator 10 by exchanging heat with the low-temperature refrigerant for heat of evaporation. The cooling air passes through the air outlet side of the evaporator 10, and most of the large flow rate is blown out from the first outlet port 15 into the freezer 1, and the remaining small flow rate is the blowout air passage 17.
Through the blowout air hole 19 to the blowout chamber, and then blown out into the refrigerator 2 from the second blowout port 16. The inside of the freezer 1 is cooled to an extremely low temperature by the low-temperature, large-volume air, and the air that has circulated inside the freezer 1 is introduced into the indoor fan 12 through the first suction port 13.

On the other hand, the inside of the refrigerator 2 is cooled to a low temperature by the low temperature and small flow rate of air, and the air that has circulated inside the refrigerator is introduced into the indoor fan 12 through the second suction port 14, the suction chamber and the suction air hole 18. Thus, the atmospheres having different cooling temperatures are maintained in this way.

It should be noted that, in the freezer 1 at an extremely low temperature, when a part of the air in the freezer is replaced with the outside air by opening and closing the adiabatic door as the product to be frozen is put in and taken out, the door is closed and sealed. After a while, the outside air with a high temperature that has entered will be cooled rapidly, and as a result, the air pressure inside the freezer will decrease due to the decrease in volume, and this phenomenon will become more pronounced in freezer with better airtightness. It often happens that the air pressure difference prevents the door from opening outward.

However, in the case of the freezer 1 shown in FIG. 1, since it communicates with the refrigerator 2 through the cooling unit 5,
When the refrigerator 2 is kept at atmospheric pressure, the freezer 1
There is no possibility that the pressure inside will fall.

The refrigerator 2 shown in FIG. 1 is constructed as a refrigerator suitable for storing fruits and vegetables, and a ventilation inlet 20 and a ventilation outlet 21 are provided at appropriate places on the side wall. Therefore, when storing fruits that act as a breather, it is possible to maintain the environment under normal atmospheric pressure, which is necessary for fruits, in the refrigerator 2 by ventilating even if a gas such as ethylene is generated. As a result, a small amount of atmospheric pressure air flows in and out of the freezer 1, so that the inside of the freezer 1 does not have a negative pressure.

Since the refrigerating apparatus 4 shown in FIG. 1 is unitized, it has the advantages that it can be easily mounted and that it has a compact structure and does not require a large installation space.

[0022]

As described above, according to the present invention, the refrigerating apparatus is shared by the plurality of rooms 1 and 2 which should have different cooling temperatures, and the large flow rate of air on the air outlet side of the evaporator 10 is low. Since it is configured to guide a small flow rate of the remaining air to the room 2 having a high cooling temperature in the room 1 having a cooling temperature, one refrigerating device can be used for a plurality of rooms 1 and 2 and a significant cost reduction can be achieved. However, the installation space is reduced.

Further, according to the present invention, a plurality of atmospheres having different cooling temperatures can be created by adjusting the delivery distribution amount of the cooling air, which has an advantage that the structure and the temperature adjusting means are complicated. , Multiple rooms 1,
Since 2 is partially communicated with the evaporator 10 through the air circulation point, it is possible to avoid that the room on the low temperature side becomes negative pressure due to cooling.

[Brief description of drawings]

FIG. 1 is a schematic structural diagram showing an embodiment of the present invention.

FIG. 2 is a plan view of a cooling unit 5 in FIG.

[Explanation of symbols]

 1 room 2 room 4 Refrigerator 5 Cooling unit 6 Outdoor unit 10 Evaporator 12 Indoor fan

Claims (1)

Claims: 1. A plurality of chambers 1, which should have different cooling temperatures.
Of the two, the evaporator 10 is provided in the room 1 having a low cooling temperature, and the air in the room 2 having a high cooling temperature and the air in the room 1 having a low cooling temperature are guided to the air inlet side of the evaporator 10. The refrigerating apparatus is configured so that a large flow rate of air on the air outlet side of the evaporator 10 is introduced into a room 1 having a low cooling temperature and a small flow rate of remaining air is introduced into a room 2 having a high cooling temperature.