JP2951084B2 - Thawing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thawing apparatus used for thawing an object to be thawed such as frozen foodstuffs, and more particularly to a large thawing apparatus suitable for mass thawing in factories and the like.

[0002]

2. Description of the Related Art For example, when a large amount of frozen food such as frozen shrimp is thawed and produced in a factory, the material to be thawed is conventionally placed on a multi-stage shelf and left in a room temperature room or a refrigerator to be naturally thawed. The method was generally adopted.

However, such a natural thawing method has a drawback that the processing efficiency is low because a long time is required for thawing.

[0004] Therefore, an electron thawing method in which a large microwave oven is used to defrost by radiating electrons to the water content of the object to be defrosted while cooling the inside of the refrigerator to about -10 ° C, a far-infrared heater using a heater heat source. Various thawing methods such as thawing method, hot air tunnel thawing method, batch thawing method, electrostatic thawing method, sprinkling thawing method using water temperature, underwater stirring thawing method have been proposed, and equipment for that has been developed. I have.

[0005] However, all of these methods use electric heat or water, so that the apparatus must be large and complicated, resulting in high costs. Moreover, those related to water use
Sewage wastewater treatment problems also require wastewater treatment equipment,
This has led to an increase in size and complexity, resulting in an increase in cost.

The present invention has been made in view of such a technical background, and an object of the present invention is to provide a decompression device that can efficiently decompress with a simple configuration.

[0007]

In order to achieve the above object, the present invention, as shown with reference to the reference numerals in the drawings, comprises a pair of upper and lower hollow receiving frames (3) and (4) arranged horizontally. The upper and lower finned heat radiating plates (5) and (6) for performing thawing while holding the object to be thawed (D) in contact with each other are divided into a plurality of pieces and the fin portions (5b) and (6b) are removed. A decompressor (2) housed in a horizontal orientation, a plurality of decompressors (2) being vertically arranged in parallel at an interval, and one of each decompressor (2) The decompression device is characterized in that an elevating device (C) for bringing the hollow receiving frame (3) into or out of the other hollow receiving frame (4) collectively is provided.

[0008]

In order to perform thawing, one hollow receiving frame (3) of each thawing device (2) is collectively separated from the other hollow receiving frame (4) by the lifting device (C). Receiving frame (4)
The object to be thawed (D) is placed on the finned heat sink (6).
Then, the separated hollow receiving frame (3) is moved closer to the other hollow receiving frame (4) by the lifting device, and the object to be thawed (D) is held in contact between the upper and lower heat radiating plates (5) and (6). The thawing is performed in this state, but the thawing is accelerated by the cooling action of the heat radiating plates (5) and (6), and the thawing is performed in a short time. After the thawing is completed, the hollow receiving frames (3) and (4) are separated from each other again to take out the thawed material. As described above, the setting and removal of the object to be thawed (D) are extremely easily performed by the operation of the elevating device (C).

Further, since the heat radiating plates (5) and (6) are housed in the hollow receiving frames (3) and (4) in a state of being divided into a plurality of parts, the heat radiating plates are used when the heat radiating plate is damaged or washed. Not only is the work of attaching and detaching easy and easy, but even if there is a local variation in the thickness of the material to be thawed, only the heatsink of the thick part protrudes upward and other heatsinks rise. Is prevented. Therefore, rattling and lifting as in the case of using a single heat radiating plate are prevented, and the contact area of the heat radiating plates (5) and (6) to the surface of the object to be thawed (D) is as large as possible. .

[0010]

Next, an embodiment of the present invention will be described with reference to FIGS.

1 to 4, (A) shows a thawing unit for accommodating objects to be thawed such as frozen foods, and (B) shows a fan unit for promoting thawing.

The thawing unit (A) is as shown in FIG.
A box-shaped unit body (1) having front and rear surfaces, i.e., both sides in the direction of air blowing by the fan unit (B), is provided, and is housed in the unit body (1) in parallel in a vertical direction at a distance. A plurality of decompressors (2) are provided.

Each defroster (2) has a pair of upper and lower hollow receiving frames (3) and (4) arranged in a horizontal state as shown in FIG.
Upper and lower finned heat radiating plates (5) and (6) accommodated in these hollow receiving frames in a horizontal state. The hollow receiving frames (3) and (4) are formed of flat frames having a low height, and the front and rear frame portions (3a) and (4a) have a large number of air flow holes (3b) (3b) along the length direction. 4b) is provided. Also,
Each hollow receiving frame (3) (4) has a front and rear partitioning member (3c)
(4c) is provided, whereby the hollow receiving frames (3) and (4) are partitioned into a plurality of heat sink housing spaces (7) in the length direction (lateral direction). Further, inwardly protruding locking edges (3d) (4d) are provided at lower front and rear edges of each hollow receiving frame (3) (4). And a plurality of finned radiating plates (5) (6) divided into the size of each radiating plate accommodation space (7) are
The front and rear lower edges are connected to the locking edges (3, 4) of the hollow receiving frames (3, 4).
d) Each fin accommodating space (7) mounted on (4d)
Is housed in In this embodiment, as shown in FIG. 9, the bases (5a) (6)
Aluminum with high fins (5b) and (6b) formed in a) and a middle part in the height direction of the fins (5b) and (6b) connected by reinforcing walls (5c) and (6c) Extruded profiles (including their alloys) have been used. As shown in FIG. 8, the finned heat radiating plates (5) and (6) are provided between the bases (5a) and (6a) of the opposed upper and lower heat radiating plates (D).
Is kept in contact to promote defrosting by the heat radiation action. For this purpose, the upper heat radiation plate with fins (5) is arranged such that the fin portion (5b) faces upward, and the lower heat radiation plate (5). 6)
Are arranged so that the fin portions (6b) face downward, and are accommodated in the hollow receiving frames (3) and (4), respectively.

The upper and lower hollow receiving frames (3) of each of the defrosters (2).
(4) is attached to the thawing unit (A) as follows. That is, as shown in detail in FIG. 6 and FIG. 7, the right and left columns (8)
In (9), a pair of L-shaped cross-section angles (10) are fixed by welding or the like at intervals in the vertical direction in a state of being bridged.
The lower hollow receiving frame (4) of each decompressor (2) is detachably mounted with its lower right and left edges locked to the L-shaped angle (10). Further, on the left and right sides of the thawing unit (A), two vertically long slide bars (11) and (11) are provided between the front and rear struts (8) and (9), and these slide bars (11) are provided. In the state of (11), a pair of inverted L-shaped angles (12) are fixed vertically by welding or the like at the same interval as the L-shaped angle (10). Each of the upper hollow receiving frames (3) is detachably supported by slide bars (11) and (11) with their lower left and right edges locked by the inverted L-shaped angle (12). The slide bar is slidable up and down, whereby each upper hollow receiving frame (3) moves up and down so as to be able to separate and approach the lower hollow receiving frame (4) in a fixed state. I have.

The vertical slide of the slide bar (11) is
This is performed by a lifting device (C) including a lifting handle (20). That is, as shown in FIGS. 1 to 4, a rotatable elevating handle (20) is provided on the side surface of the defrosting unit (A), while a lowering side of the defrosting unit (A) is provided on the lower surface of the defrosting unit (A). A short transmission shaft (21) extending from the end of the shaft to the left and right intermediate position is provided.
A sprocket (22) is attached to the outer end of 1), and a large reduction gear (23) is attached to the inner end.
The sprocket (22) and the shaft of the lifting handle (20) are connected by a chain (24). Further, a camshaft (25) extending to both ends in the left-right direction is further attached to the lower surface of the thawing unit (A). At the center of the camshaft (25), while being engaged with the large-diameter reduction gear (23), a small reduction gear (26) is attached. A snail-shaped eccentric cam (27) (27) for ascending and descending a slide bar is attached to the. Therefore, by rotating the raising / lowering handle (20) clockwise or counterclockwise, the shaft of the handle is rotated by the chain (24), the sprocket (22), the transmission shaft (21), and the large diameter reduction gear (23). Is transmitted to the eccentric cams (27) and (27) via the same diameter small gear (26) and camshaft (25), and the cam rotates counterclockwise or clockwise.

As shown in FIGS. 10 and 11, the cams (27) and (27) have U-shaped connecting portions (28) connected to lower ends of two slide bars (11) and (11). Is in contact with the center of the lower surface of the. Then, when the small diameter portion (27b) of the cam comes into contact with the U-shaped connecting portion (28) by the rotation of the cam (27) (FIG. 10).
Then, the slide rods (11) and (11) are lowered to the maximum lowering position, and when the large diameter portion (27a) of the cam comes into contact with the U-shaped connecting portion (28) (FIG. 11), it is pushed up to the maximum raising position. Following the continuous change in the diameter of the cam from the small diameter portion (27b) to the large diameter portion (27a), the slide rod (11), and thus the upper hollow receiving frame (3), is moved between the maximum rising position and the maximum lowering position. It can be moved up and down continuously between them. When the lifting handle (20) is at the upper position, the upper hollow receiving frame (3) is at the maximum lowered position, and when the lifting handle (20) is at the lower position, the upper hollow receiving frame (3) is at the maximum raised position. Thus, the reduction ratio of each of the large-diameter and small-diameter gears (23) and (26) for reduction is set. Also, the cam (2
7) In order to stop the operation stably, the cam should be
) Is notched, and a stopper (27c) is provided near the small diameter portion (27b). The position of attachment to the slide bar (11) is determined so that the upper hollow receiving frame (3) almost abuts the lower hollow receiving frame (4) at its maximum lowered position.

The fan unit (B) is shown in FIGS.
As shown in FIG. 13 and FIG. 13, the unit has a plurality of fans (30) arranged in parallel. This fan unit (B)
Thawing unit (A) by the operation of each fan (30)
By forcibly blowing air toward the finned heat radiating plates (5) and (6), the cooling effect of the heat radiating plates becomes active and the thawing is promoted. A plurality (two in the illustrated embodiment) of thawing units (A) and (A) are arranged in series with respect to the blowing direction (indicated by an arrow in FIG. 4) of the fan (30) of the fan unit (B). The fan unit (B) is connected so that a plurality of thawing units (A) and (A) can be simultaneously operated by one fan unit (B) to perform efficient thawing. Further, if the blown air comes into direct contact with the object to be thawed (D) sandwiched between the upper and lower heat radiating plates (5) and (6), a decrease in flavor or the like is caused. B), a baffle plate (31) is provided vertically above and below the front surface of the object corresponding to the installation position of the object to be thawed (D).

FIGS. 1 to 4, 12 and 13 show (4
0) is a caster attached to the lower surface of the thawing unit (A) and the fan unit (B).

Next, the operation of the defrosting apparatus according to the illustrated embodiment will be described.

When the lifting handle (20) is at the upper position, the cam (27) has a small diameter portion (27b) abutting against the U-shaped connecting portion (28) at the lower end of the slide rod (11) as shown in FIG. With the slide rod (11), the upper hollow receiving frame (3) is at the maximum lowered position, and the upper and lower hollow receiving frames (3), (4) are in the closest state.

In this state, when the elevating handle (20) is rotated half a clockwise rotation, the elevating handle (20), sprocket (22), transmission shaft (21), large diameter reduction gear (23), deceleration The cam (27) (27) rotates counterclockwise as shown by the arrow in FIG. 10 via the small diameter gear (26) and the camshaft (25), and as shown in FIG. 27a) is U
Stops stably by contacting the shape connection part (28). Following the rotation of the cam (27), the slide bar (11) rises, whereby the upper hollow receiving frames (3) of the respective decompressors (2) rise simultaneously and the lower hollow receiving frame (4). Separate from.

Next, the lower heat sink (6) of each defroster (2).
After the object to be thawed (D) is placed on the upper surface of, the lifting handle (20) is returned counterclockwise. Then handle (20)
Is transmitted to the cam (27) in the same procedure as described above, the cam (27) rotates clockwise as indicated by the arrow in FIG. 11, and the slide bar (11) descends. The lowering of the slide bar (11) simultaneously lowers the upper hollow receiving frames (3) attached to the slide bar simultaneously.

When the distance between the upper and lower hollow receiving frames (3) and (4) almost reaches the thickness of the object (D), the lower surface of the base (5a) of the upper radiating plate (5) is attached to the object (D). And the object to be thawed (D) is held in a state of being pressed between the upper and lower heat radiating plates (5) and (6) by the weight of the upper heat radiating plate (5). At this time, even if the thickness of the material to be thawed (D) varies, the finned radiating plates (5) and (6) are accommodated in the hollow receiving frames (3) and (4) in a state of being divided into a plurality. As a result, only the radiator plate in contact with the thick part is lifted upward, so that the other radiator plates are prevented from rising, and the entire radiator plate is securely and uniformly pressed against the object to be thawed (D). , Uniform thawing is performed. For this reason, it is possible to perform uniform thawing even on an object to be thawed having a varied thickness.

The thawing units (A) and (A) in which the object to be thawed (D) is held between the upper and lower heat radiating plates (5) and (6) of the respective thawing devices (2) as shown in FIG. Are arranged in series with the fan unit (B) in the blowing direction.

Next, the fan (30) in the fan unit (B) is operated to forcibly blow air toward the thawing units (A) and (A), and the radiating plates with fins (5) and (6) allow the cooling operation. To promote thawing. At this time, since the baffle plate (31) is provided at the position of the fan unit (B) corresponding to the object to be defrosted, air is blown away from the baffle plate (31), and the object to be defrosted (D) is blown. The direct contact of the blast air with the air is prevented, and the flavor of the defrosted product is prevented from lowering.

When the thawing is completed, the fan (30) is stopped, the upper hollow receiving frame (3) is raised by the operation of the elevating handle (20), and then the thawing material is taken out. Thereafter, the same operation is repeated.

In the illustrated embodiment, the upper hollow receiving frame (3) is moved up and down collectively. However, the lower hollow receiving frame (4) may be moved up and down collectively.

The structure using a chain (24), gears (23) (26), cams (27) and the like has been shown as the elevating device (C) for elevating and lowering the hollow receiving frame. For example, the right and left U-shaped connecting portions (28) are connected by a high-strength crossing plate, and a hydraulic lifting lifter is provided at the lower center of the crossing plate, and the slide bar is moved up and down by the lifter. It is good also as a structure to make it. Alternatively, a configuration may be adopted in which a eccentric cam is provided on the shaft of the lifting handle, the cam is directly rotated using the lifting handle as a lever bar, and the slide bar is raised and lowered according to the cam diameter.

[0029]

According to the present invention, as described above, thawing is performed by holding the object to be defrosted between the upper and lower finned heat radiating plates in a contact state, and the thawing can be accelerated by the cooling effect of the heat radiating plate. Thawing can be performed more efficiently in a shorter time than in natural thawing.

In addition, a plurality of decompressors accommodating heat sinks are provided in the upper and lower hollow receiving frames, and one hollow receiving frame of each decompressor is collectively separated or approached to the other hollow receiving frame by the lifting device. Therefore, in addition to being able to set and take out the object to be thawed extremely easily by operating the lifting device, in addition to promoting thawing by the action of the heat radiating plate and not using electric heat or water, etc. Since there is no decompression device, the decompression device can be made extremely simple and inexpensive in terms of structure, and can be made into a decompression device with high practical value which is advantageous in use and production.

The finned radiator plate is housed in the hollow receiving frame, and furthermore, is housed in the hollow receiving frame in a state of being divided into a plurality of parts. Work and handling can be facilitated, and the hollow receiving frame also functions as a protection member for the radiator plate against external force from the side, so that the durability of the radiator plate can be improved. In addition, the fact that the heat sink is divided into a plurality of parts means that even if there is a local variation in the thickness of the material to be thawed, only the heat sink in the thick part protrudes upward and other heat sinks This also has the effect of preventing the floating of the surface. Therefore, 1
Prevents rattling and lifting of the entire body as when using a single heat sink, so the contact area of the heat sink to the surface of the object to be thawed can be maximized, and uniform and quick thawing without uneven thawing Becomes possible.

[Brief description of the drawings]

FIG. 1 is a front view of a thawing unit.

FIG. 2 is a side view of the thawing unit with a part of a side plate cut away.

FIG. 3 is a bottom view of the thawing unit.

FIG. 4 is a perspective view showing a state before connection between the thawing unit and the fan unit.

FIG. 5 is an exploded perspective view showing the upper and lower hollow receiving frames.

FIG. 6 is a perspective view showing the mounting structure of the upper and lower hollow receiving frames.

FIG. 7 is a front view showing the mounting structure of the upper and lower hollow receiving frames.

FIG. 8 is a partial front cross-sectional view showing a state in which an object to be thawed is held between upper and lower finned heat sinks.

FIG. 9 is a front view of a finned heat sink.

FIG. 10 is a view showing a relationship between a cam and a slide bar, and is a front view when the slide bar is at a maximum lowered position.

FIG. 11 is a front view when the slide bar is at the maximum raised position.

FIG. 12 is a front view of the fan unit.

FIG. 13 is a side view of the fan unit with a part of the side plate cut away.

[Explanation of symbols]

 A: Thawing unit C: Lifting device 2: Thawing unit 3: Upper hollow receiving frame 4: Lower hollow receiving frame 5: Heat sink with upper fins 6: Heat sink with lower fins 5b, 6b: Fin unit

Claims (1)

(57) [Claims] An upper and lower finned heat radiating plate (5) for performing thawing by holding an object (D) in contact with a pair of upper and lower hollow receiving frames (3) (4) arranged in a horizontal state. (6) is divided into a plurality of pieces and the fins (5b) (6
Thawer (2) housed horizontally with b) facing out
And a plurality of the thawing devices (2) are vertically arranged in parallel at a distance from each other, and one hollow receiving frame (3) of each thawing device (2) is connected to the other hollow receiving frame (4). A decompression device characterized by being provided with an elevating device (C) for approaching or separating from the device at a time.