JPH0660778B2 - Cold storage - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a low-temperature warehouse in which a cooling unit and a humidifying device are provided in a refrigerator to maintain the quality of stored products.

(B) Conventional technology For example, in Japanese Utility Model Application Laid-Open No. 59-65383, a unit cooler covered with a heat insulating partition wall having an openable air outlet and a suction inlet is provided on one side wall of a freezer. There is disclosed a cooling device provided in the.

(C) Problems to be Solved by the Invention In the above conventional technique, the temperature inside the refrigerator is set to -2 ° C, which is a so-called ice temperature range, and the air inside the refrigerator is humidified to maintain the freshness of the stored products. When the humidifier is provided on the side wall opposite to the side wall on which the unit cooler is provided, the cool air blown out from the air outlet due to the operation of the unit cooler is directed to the opposite humidifier, so that it is formed by the humidifier. The discharged mist stays around the humidifier due to the cool airflow from the unit cooler, and the humidification of the air inside the chamber is not uniform, but the mist staying around the humidifier gradually humidifies. There is a problem in that the surface of the device freezes and this freeze increases to require removal work.
Also, when the humidifier is provided on the side wall that is orthogonal to the side wall where the unit cooler is provided, the cold air blown out from the unit cooler and the mist blown out from the humidifier intersect with each other at a substantially right angle, and the fog is the humidifier. There is a problem that the entire storage inside cannot be humidified by staying around the inside of the container and that the surface of the humidifier is frozen. The present invention aims to solve the above problems.

(D) Means for Solving the Problems In order to solve the above problems, the present invention forcibly circulates a humidifying device that generates mist, a cooler, and cool air that has been heat-exchanged by the cooler into the refrigerator. A cooling unit having a blower, the humidification device, a fog generator, a blower device having a slower wind speed than the blower, and a mist outlet that blows out mist so that the blown mist attracts the cold air, It constitutes a low-temperature chamber provided with a heating device for heating the sucked cold air.

(E) In the following, according to the embodiment, when the cooling operation by the cooling unit (6) and the humidifying operation by the humidifying device (4) are being performed at the same time, it is blown out from the mist blowout port (28) of the humidifying device (4). The fog thus generated is blown out from the cold air outlet (13) of the cooling unit (6) and is attracted to the cool air by the action of attracting the cool air having a faster wind speed than the fog, and circulates in the refrigerator together with the cool air.

(F) Embodiment Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

(1) is a low-temperature storage such as a prefabricated storage, which has a heat-insulating panel (2) that defines the storage chamber, a heat-insulating door (2d) that opens and closes the side wall opening of the heat-insulating panel, and a refrigerator ( 3) and
It is composed of a humidifying device (4) and a transformer box (5). Here, the refrigeration system (3) is attached to one side wall of the low temperature cabinet (1), and has a cooling unit (6) inside the cabinet and a condensing unit outside the cabinet.
It consists of (7) and. And as shown in FIG. 3, the cooling unit (6) includes a cooler (8) and a blower (9A) for the cooler.
(9B), an auxiliary blower (10), a cooling unit box (11), etc., and a cooling air outlet (13) with a wind direction plate (12) is formed at the upper part of the cooling unit box (11). ing. Further, (14) is a dew tray provided directly below the cooler (8) and connected to a drain pipe (P), and a drain pipe extends from this fog tray to the outside. Furthermore, (S) is a temperature-sensitive element for temperature control, and (G) is a guard.

On the other hand, the condensing unit (9) includes a condenser (15), a compressor (16),
It is composed of a blower (17) for heat exchange of the condenser, an outer box (18) and the like.

During operation of the refrigeration system (3), by operating the blowers (9A) (9B) and the auxiliary blower (10), cold air circulates as shown by solid line arrows in FIGS. 1 and 2 to generate heat. The inside of the refrigerator is cooled by the exchanged cool air. In addition, the blower (1
7) is also operated, and the outside air is sucked in through the condenser (15) and blown out of the refrigerator from the blower (17).

The humidifier (4) is, for example, an ultrasonic humidifier, and is attached to one side wall of the low temperature compartment (1) along with the cooling unit (6) as shown in FIG. Further, the humidifier (4) is a place that is not easily affected by cold air circulation in the refrigerator, that is, the front of the humidifier (4) is located rearward of the front of the cooling unit (6),
It is located higher than the bottom surface of the cooling unit (6) so that it does not directly suck the circulating cold air. Furthermore, the humidifier (4)
As shown in FIG. 4, it comprises, for example, a blower (20) which is a cross flow fan, a fog generator (21), a blower (21a), and the like. Also, (22) is a connection for the drain pipe, (23)
Is an overflow pipe, and (24) is a filter for water supply. or,
From the upper front part of the outer box (27) to the front upper part,
8) is formed, and a suction port (29) equipped with a heating device (H) which is, for example, an electric heater is formed inside the front portion of the lower surface of the outer box (27). Humidifiers are installed on the left and right sides of the bottom of the outer box (27).
The mounting member (30) of (4) is attached, and the humidifying temperature (4) is attached to one side wall of the low temperature compartment (1) by these mounting members (31) (31).
Is hung through. A humidity controller (4S) is provided on the side wall of the cooling unit (6).

Here, when both the refrigerating device (3) and the humidifying device (4) are operated, as shown by the solid line arrow in FIG. 1, for example, the wind speed from the cool air outlet (13) of the cooling unit (6) 2.0m
/ Sec of cool air is blown into the chamber and the humidifier (4)
As shown by the chain line arrow, the wind velocity from the mist blowout port (28) is much slower than that of the cold air, as shown by the chained arrow. And
The mist is attracted to the cool air by the attracting action of the cool air having a high wind speed, and the cool air and the mist gradually mix with each other to circulate in the refrigerator to simultaneously cool and humidify the air in the refrigerator. Humidifier
During the operation of (4), the heating device (H) is energized to generate heat, and the suction port (29) is heated. Therefore, the suction port 2
For example, a stainless mesh filter installed in 9)
Frost on (F) can be avoided.

Therefore, when the cooling operation and the humidifying operation are performed at the same time, the mist blown obliquely forward from the mist outlet (28) of the humidifier (4) is a cooling unit (near the mist outlet (28)). The air is blown out from the cold air outlet (13) of 6) and is attracted to the cold air by the action of the cold air that has a faster wind speed than the mist, and because it mixes with the cold air and circulates in the cold room, the cold room has a predetermined temperature and humidity with little differential. Can be kept. or,
The humidifier (4) is located outside the circulation path through which the cool air blown out from the cooling unit (6) circulates inside the refrigerator and returns to the cooling unit (6). Since the cool air blown out from the humidifier does not go to the humidifier (4), the humidifier and its atmosphere are not directly cooled by the cool air, and the internal temperature is set to be lower than 0 ° C, for example, -2 ° C. Also in this case, the mist blown out from the humidifying device (4) flows without staying around the humidifying device, and as a result, it is possible to avoid the formation of fog around the humidifying device due to the mist. The cooling unit (6) blower (9A) (9B) (10) cool air circulation by the humidifier (4) blower (20)
It is possible to avoid being disturbed by driving.

Furthermore, a heating device (H) is provided at the suction port (29) of the humidification device (4), and the heating device (H) generates heat during operation of the humidification device (4), and thus the suction port (29). The filter (F) of is heated and can prevent frost formation on the filter (F).
The cold air sucked from 9) is heated by the heating device (H),
Since the temperature rises, the air whose temperature is higher than that of the cold air in the refrigerator flows in the humidifier (4), and as a result, the fog generation from the fog generator (21) can be promoted.

(G) Effect of the invention Since the present invention is a low temperature warehouse as described in the above embodiment, when the cooling operation and the humidifying operation are simultaneously performed,
Since the mist blowout port of the humidifier is located near the cool air blowout port of the cooling unit, the mist blown out from the humidifier is blown out from the cooling unit and is attracted to the cold air having a wind speed higher than that of the mist. The cold air blown out from the cooling unit, which circulates in the mixed chamber, does not directly go to the humidifying device, and mist does not stay around the humidifying device, so that the internal temperature is lower than 0 ° C. In addition to being able to avoid frost formation around the humidifier even when set to, in order to cool air in the refrigerator mainly by the blower of the cooling unit, the blower of the humidifier with a small amount of air blow The cold air circulation is not disturbed, thus
The wind velocity distribution of the cold air circulation can be maintained uniform.

Further, since the cool air sucked through the suction port of the humidifying device is heated by the heating device and its temperature rises, the air having a temperature higher than that of the cold air inside the refrigerator flows in the humidifying device, and as a result, the fog generation device generates mist. Can be promoted.

[Brief description of drawings]

1 to 4 show an embodiment of the present invention, FIG. 1 is a horizontal sectional view of a low temperature chamber, FIG. 2 is a longitudinal sectional view of a main part of the low temperature chamber,
FIG. 3 is a schematic vertical sectional view of the refrigerating apparatus, and FIG. 4 is a side view of the humidifying apparatus. (1) ... Low temperature chamber, (3) ... Refrigerator, (4) ... Humidifier, (6) ... Cooling unit, (8) ... Cooler, (9A) (9B) ... Blower for cooler, (13) … Cold air outlet, (28)… mist outlet.

Claims (1)

[Claims] 1. A humidifying device for generating fog, a cooling unit, and a cooling unit having a blower for forcibly circulating the cool air that has been heat-exchanged by the cooler into the refrigerator. The humidifying device includes a fog generating device. A low-temperature warehouse characterized by being provided with a blower device having a slower wind speed than the blower, a mist outlet for blowing out mist so that blown mist attracts the cool air, and a heating device for heating the sucked cool air. .