JPH04158775A - Thawing chamber - Google Patents

Abstract

PURPOSE:To provide a thawing machine containing a water-sprinkler having a specific constitution and effective for preventing the freezing of the sprinkler caused by the residual water by allowing the water remaining after sprinkling to spontaneously drop from the sprinkling nozzle to a drain pan even by placing a water-feeding apparatus above the sprinkler. CONSTITUTION:Chilled moist air is generated in a chilled moist air generation chamber 8 provided with an evaporator 11 for refrigeration cycle, a water- sprinkler 12 having plural nozzles 12A for sprinkling to the evaporator 11, a blower 13 and a drain pan 20 placed below the sprinkler 12. The generated chilled air is forcibly circulated into a holding chamber 3 of the objective thawing machine. In the above machine, the water-feeder 6 for supplying water to the sprinkler 12 is placed above the water-sprinkler 12, the tip end of the sprinkler 12 is inclined downward and a sprinkling nozzle 12A positioned at the lowermost point of the sprinkler 12 is directed downward.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a thawing chamber for thawing frozen foods using forcedly circulated humid cold air.

(b) Conventional technology In a conventional seed thawing store, as shown in Japanese Patent Application Laid-open No. 63-219365, the inside of the store defined by an insulating box is divided into upper and lower parts by a water collector, which is a drain pan. , the upper part is the evaporator,
A humid cold air generation chamber houses a blower, a water sprinkler, etc., and the lower part is a storage chamber for storing frozen foods.The humid cold air generated in the generation chamber is forcibly circulated to the storage chamber to thaw frozen foods. There is.

At that time, water is supplied to the sprinkler by a pump from a water storage tank located below.

(c) Problem to be solved by the invention If water remains in the sprinkler after watering with such a configuration, it will freeze during cooling tightening operation or cold storage operation after thawing, causing the sprinkler to burst or become clogged. .

In the conventional technology, water is supplied to the sprinkler from below, so by keeping the tip of the sprinkler facing upward,
The remaining water after watering returns to the water supply tank below by natural fall, but there are measures such as installing a water supply device on the ceiling of the thawing warehouse.
If the water supply device is installed above the water sprinkler due to the structure of the equipment, there is a problem in that it is difficult to collect the water by gravity into the water supply device.

The present invention has been made to solve the above-mentioned problems, and provides a thawing warehouse in which the water sprinkler is freed from freezing due to residual water in the water sprinkler.

(d) Means for Solving the Problems The present invention provides an evaporator of a refrigeration cycle, a water sprinkler having a plurality of water sprinkler nozzles for sprinkling water on the evaporator, a blower, and a device below the evaporator and the water sprinkler. In the thawing warehouse, which is equipped with a drain pan located in the storage room to forcefully circulate humid cold air into the storage room, a water supply device is installed above the water sprinkler, and the tip of the water sprinkler is installed with a low slope. The water spray nozzle located near the lower point is placed facing downward.

(e) Function According to the present invention, water remaining in the sprinkler after watering is collected at the tip of the sprinkler, falls naturally from the downward-facing water nozzle located near the tip, and is collected in the drain pan.

(f) Example Embodiments of the present invention will be described below based on the drawings.

Reference numeral 1 denotes a prefabricated high-temperature thawing warehouse to which the present invention is applied, and a hermetically sealed storage chamber 3 is configured inside an insulated outer box 2. The outer box 2 is constructed into a box shape by combining stainless steel embossed heat insulation panels with convex or concave portions at the joints with adjacent panels, and a controller 4, an electrical box 5, and a water supply device 6 are attached to the front wall. ing. Furthermore, the insulation outer box 2
An article entrance/exit for loading/unloading frozen foods is formed on the front wall of the refrigerator, and a heat insulating door 7 is provided to freely open/close this article entrance/exit.

A humid cold air generation chamber 8 is configured in the upper part of the storage chamber above the storage chamber 3, and a plate fin type evaporator included in the refrigeration apparatus is provided with a heating heater 9 and a defrost heater 10 so as to be located within the generation chamber 8. 11, and a plurality of water sprinkler nozzles 12A disposed on the air inlet surface 11A side of the evaporator 11 and having holes for spraying water toward the air inlet surface 11A of the evaporator 11.
2 and the blower 13 facing the air outlet surface 11B of the evaporator 11 are connected to the outer box 2 via the frame member 14 and the angle member 15.
It is attached approximately at the center of the lower surface of the ceiling wall.

Further, an eliminator 28 is installed upright on the opposite side of the sprinkler 12 from the evaporator 11.

The base of the water sprinkler 12 penetrates the ceiling wall of the heat insulating outer box 2,
It is connected to the water supply device 6. Further, the water sprinkler 12 extends in the front-rear direction between the eliminator 28 and the evaporator.
It is arranged at an angle so that the tip located at the front is lower. Further, the water spray nozzle 12A located near the lowest point of the water spray 512 is arranged facing downward. As a result, the water remaining in the water sprinkler 12 after sprinkling water naturally falls downward from the water nozzle 12A and is collected in a drain pan 20, which will be described later.

An angle member 16 is attached to the lower end of the frame member 14,
Two eliminators 17 and 18 are attached between the angle member 16 and the left and right side walls of the outer box 2.

The above-mentioned drain pan 20 is arranged below, facing the evaporator 11, the sprinkler I2, and the blower 13. The drain pan 20 is rotatably supported on the frame member 14 by a hinge 21 on one side, and fixed to the frame member 14 on the other side by a removable catcher 22. Drain pan 2
0 is water sprayed from the water nozzle 12A or evaporated ill.
Collect defrosting water.

23 is an exterior plate arranged to cover the lower part of the drain pan 20, and the same side as the hinge 2111i1 of the drain pan 20 is rotatably supported on the angle member 16 by a hinge 24, and the other side is similarly removed. Free catcher 25
It is fixed to the angle member 16 at. The exterior plate 23 is located at approximately the same height as the eliminators 17 and 18 and separates the storage chamber 3 from the generation chamber 8.
3, the entire drain pan 20 becomes the generation chamber 8.
It will exist within. Further, a heat insulating material 26 is attached to the upper surface of the exterior plate 23.

Note that 27 is a drain hose detachably connected to the drain pan 20.

Next, the thawing operation of the thawing cabinet will be explained. The cold air heat-exchanged in the evaporator 11 by the operation of the refrigeration device, the blower 13, and the water supply device 6 is sprayed in a mist form from the sprinkler nozzle 12A of the sprinkler 12 toward the air inlet surface 11A of the evaporator 11, and is heated. Humid cold air containing water particles evaporated by the heating of the heater 9 (e.g., temperature 5°C, humidity 95-100%)
This humid cold air is then forcedly circulated into the storage chamber 3 by the blower 13 to defrost the frozen food.

Defrost water from the evaporator 11 and surplus water from the water sprinkler 12 are collected in a drain pan 20 and drained from a drain hose 27.

When this thawing operation is completed, the inside of the storage chamber 3 is cooled to about 13° C. by the evaporator 11 for a predetermined period of time, a so-called tightening operation is performed, and then a cold storage operation at about θ° C. is started, for example.

During such tightening operation and cooling operation, the temperature around the water sprinkler 12 drops to freezing temperature, but no water remains inside the water sprinkler 12 as described above, so freezing does not occur.

(G) Effects of the Invention According to the present invention, even if the water supply device to the sprinkler is arranged above the sprinkler, the tip of the sprinkler is sloped low, and the sprinkler nozzle near the lowest point is moved downward. After watering, the water in the watering nozzle naturally falls from this nozzle and is collected in the drain pan. Therefore, since there is no remaining water in the water sprinkler, it will not freeze during the cooling operation after thawing, and it is therefore possible to eliminate malfunctions and clogging of the water sprinkler.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of the thawing chamber of the present invention, Fig. 2 is a perspective view of the thawing chamber, Fig. 3 is a plan sectional view of the thawing chamber, and Fig. 4 is a portion of the generation chamber with the eliminator removed. Cross-sectional view of the thawing chamber,
FIG. 5 is an enlarged view of the generation chamber portion of FIG. 1. I... Thawing chamber, 2... Insulated outer box, 3... Storage room,
6... Water supply device, 8... Humid cold air generation room, 11...
・Evaporator, 12... Water sprinkler, 12A... Water nozzle, 13... Air blower, 20... Drain pan,

Claims (1)

[Claims] 1) It is equipped with an evaporator of the refrigeration cycle, a sprinkler having a plurality of sprinkler nozzles for sprinkling water on the evaporator, a blower, and a drain pan located below the evaporator and the sprinkler, and is installed in a storage chamber. In the thawing warehouse where humid cold air is forcedly circulated,
A water supply device for supplying water to the sprinkler is provided above the sprinkler, and the tip of the sprinkler is arranged with a low slope, and the sprinkler nozzle located near the lowest point of the sprinkler is directed downward. A thawing cabinet characterized by being arranged facing toward the target.