JPS6024158Y2 - Wind direction reversal devices such as air circulation thawing machines - Google Patents

Description

[Detailed description of the invention] This invention is a thawing machine or storage system that has a thaw chamber and forced circulation system in which shelves for storing thawed products are formed in multiple stages in a zigzag pattern, and these shelves are used as a continuous air flow path. In between, the invention relates to a wind direction reversing device such as an air circulation type thawing machine attached to the rear side of the thawing chamber, which eliminates temperature distribution differences within the thawing chamber and enables uniform thawing of the entire thawing chamber.

Generally, most imported products such as meat are frozen at ultra-low temperatures to maintain freshness, and are thawed before reaching consumers.

However, with conventional thawing operations, it is difficult to maintain the freshness and taste of meat, which is the biggest problem, and drips such as meat juice seep out from the processed meat after thawing, significantly reducing the product value, or air leakage. This type has drawbacks such as poor air circulation within the thawing chamber, resulting in uneven distribution of thawing temperature and thawing speed, resulting in uneven thawing, and this tendency becomes more pronounced as the size becomes larger.

This idea was made in order to improve the drawbacks of the conventional method mentioned above.The shelves for storing frozen products are formed into multiple stages in a zigzag pattern, and this is used as a thawing chamber and forced air flow path. and a thawing machine having a circulation system,
This is an inversion box that is attached to the back of the thawing chamber and incorporates a pair of dampers, and by operating the dampers, the direction of the circulating airflow is alternately reversed, eliminating differences in temperature distribution within the thawing chamber, and thawing the entire area uniformly. The present invention provides a wind direction reversing device for an air circulation type thawing machine configured to perform the following steps.

Hereinafter, one embodiment of this invention will be described in detail based on the attached drawings.

Figure 1 is a schematic diagram showing the overall configuration of a thawing machine equipped with a reversing device according to this invention. 1 has an opening/closing door on the front and a drip tray on the bottom, and is used to store frozen items and other items to be thawed. A thawing cabinet with zigzag-shaped shelves 1a formed in multiple stages and a rear panel 21 arranged around the waist and a rectifying plate for circulating air if desired; box, 3 is a refrigerator, 4 is a circulation tank, 5 is a perforated gas-liquid contact tower, 6 is a circulation pump, 7 is a circulation fan, 8a, 8b are switching dampers, 9a, 9b are air cylinders, etc. Each device is an actuator, and each device is integrated on a common pedestal 10 and configured to be portable.

2 and 3 are explanatory diagrams of an embodiment of the reversing box 2 attached to the rear side of the thawing chamber 1 according to this invention, and 11 is a perforated type gas-liquid contact tower 5. An introduction tact 12 introduces circulating air conditioned to high humidity in the thawing chamber 1, and an exhaust duct 12 returns the air to the circulation fan 7 after being circulated in the thawing chamber 1.

Needless to say, the positions of the scales should be horizontally reversed from left to right.

Further, 13 is an upper entrance/exit for communicating circulating air from the reversing box 2 into the thawing chamber 1, 14 is a lower entrance/exit of the thawing chamber 1;
5 is a vertical partition wall 16 in the inversion box 2, and 17 is a horizontal partition wall in the box divided into left and right sides, and a 10-shaped partition wall is formed in the center.

Communication ports 15a provided above the vertical partition wall 15 and communication ports 17a provided in the horizontal partition wall 17 are provided with switching dampers 8a.
is installed, and a communication port 15 provided below the vertical partition wall 15
A switching tamper 8b is attached to the communication port 16a provided in the upper and lower partition walls 16 and is operated in conjunction with actuators 9a and 9b attached to the outer wall panel 22 of the reversing box, respectively.

FIG. 4 shows a switching damper 8a according to this invention.

8b is an explanatory diagram showing the opening/closing operation mechanism of the switching damper 8b, in which the switching dampers 8a and 8b are connected to actuators 9a and 9b such as air cylinders via arms 18a and 18b,
The actuators 9a, 9b are operated by air pressure supplied from an air source 20 via a three-way valve 19.

Although this figure shows an example in which the actuator operates in the horizontal direction, it goes without saying that the actuator may operate in the vertical direction.

Next, the operation of the wind direction reversing device using the switching tampers 8a+8b of the reversing box 2 constructed as described above will be explained based on FIGS. 5 and 6.

First, the circulating air whose temperature and humidity have been adjusted in the perforated gas-liquid contact tower 5 is led into the inversion box 2 through the introduction duct 11, where it is normally ventilated as shown in FIG. Communication port 1 of horizontal partition walls 16 and 17 is established by switching dampers 8a and 8b.
6a and 17a and circulate air from the communication port 15a to the thawing chamber 1.
It is circulated from above to below in the thawing chamber through the upper entrance/exit 13 in the interior, and is returned to the suction side of the reflux fan 7 via the ventilation duct 12 through the communication opening 15b which is returned to the inverting box 2 through the lower entrance/exit 14. .

If the above-mentioned one-way ventilation is interrupted for a certain period of time, there will be a difference in the degree of thawing in the upper and lower sections of the refrigerator, so a timer (not shown) or the like is used to switch the damper 8a.
, 8b are switched as the actuators 9a, 9b operate, and as shown in FIG. 6, the communication ports 16a, 17a are open, and the communication ports 15a, 15b of the vertical partition wall 15 are closed, so that the circulating air flows through the inverted box. Ventilation is carried out from the lower part of the warehouse through the communication port 16a in the box 2 through the lower doorway 14, circulates upward, returns to the inside of the reversing box 2 through the top doorway 13, and passes through the communication port 17a through the exhaust duct 12 to the circulation fan. 7 is returned to the suction side.

Therefore, by repeatedly performing the switching operation of the switching dampers 8a and 8b over time, the circulating air generated from the high humidity air that thaws the items to be thawed is evenly ventilated into the thawing chamber 1.

As explained in detail above, the air circulation type wind direction reversing device according to this invention has a simple structure, is small, compact, and portable, and can arbitrarily change the thawing atmosphere temperature, time, and ventilation direction in the thawing chamber. Therefore, the product to be thawed can be thawed evenly and uniformly, and the thawing time can be greatly shortened, which has practical effects.

In addition, since the scales maintain the temperature of the low-temperature crystals inside the refrigerator evenly, they can of course also be used as a cold storage.

[Brief explanation of drawings]

Fig. 1 is a schematic configuration diagram showing the entire thawing machine using this invention, Fig. 2 is a perspective view illustrating the reversing box according to this invention, Fig. 3 is a perspective view of the thawing chamber and the reversing box, and Fig. 4 Figure 5 is a diagram of the opening/closing operation mechanism of the switching damper according to this invention.
Figures N to 6 are explanatory views of the operation of the wind direction reversing device according to this invention. 1... Thawing box, 2... Reversing box,
7...Circulation fan, 8a, 8b...Switching tamper 19a. 9b...actuator, 11...introduction duct, 12...exhaust duct, 13...
・・Top entrance/exit, 14・・・Bottom entrance/exit, 15・
...Vertical partition wall, 15a. 15b...Communication port, 16, 17...Horizontal partition wall, 16a, 17a...Communication port.

Claims (1)

[Scope of utility model registration request] The shelves for storing items to be thawed are formed into multiple tiers in a zigzag pattern.This is a continuous air passage attached to the back of the thawing chamber, and is an inverted box equipped with an introduction duct and an exhaust duct to introduce circulating air. An upper entrance and a lower entrance for communicating circulating air are provided on the surface adjacent to the thawing chamber, and a vertical partition wall having vertical communication openings in the inversion box communicates with the left and right sides of the vertical partition wall. A wind direction reversing device such as an air circulation type thawing machine, which is provided with a horizontal partition wall having a port, and is configured to alternately reverse the direction of circulating air in the thawing chamber by a switching damper that opens and closes each communication port.