JP2005218415A - Thawing chamber - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thawing chamber efficiently thawing frozen products in a thawing room through reasonably arranging a radial fun to circulate thawing chamber air and a warming unit to warm thawing chamber air. <P>SOLUTION: This thawing chamber is such that a first duct 11 and a second duct 12 are each set on the right and left of the thawing room 2 in a thawing chamber main body 1, and a ceiling duct 13 connecting the first and second ducts 11 and 12 is set. The first duct 11 is divided into first and second air intake passages 18 and 19 with a partition 17. The radial fun 5 is arranged in the second air intake passage 19, and air in the thawing room 2 is absorbed with the fun through the air intake hole 14 of a first inner wall 15, the first air intake passage 18 and the central opening 16 of the partition 17 into the second air intake passage 19, and then sent to the ceiling duct 13. The second duct 12 is divided into first and second air sending passages 25 and 26 with a partition 24. The thawing room air is sent through the ceiling duct 13, the first air sending passage 25 and the ventilating hole 23 of the partition 24 to the second air sending passage 26. The thawing room air is warmed with the warming unit 6 and sent from the air sending hole 21 of a second inner wall 22 into the thawing room 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a defroster for thawing frozen products such as frozen foods.

  In Patent Documents 1 and 2, the air in the thawing chamber inside the thawing chamber is sucked into the duct by an axial fan, the air in the thawing chamber is warmed by the heating unit, and then the warm air is blown out to the thawing chamber. Thawing frozen products in the thawing chamber.

Japanese Laid-Open Patent Publication No. 1-124371 (Specification, page 3, lower left column, FIG. 1) JP-A-5-332665 (paragraph number 0014-0015, FIGS. 1 and 3)

  In this type of thawing cabinet, it is required to thaw all the frozen products in the thawing chamber at a uniform rate from the viewpoint of HACCP (hazard analysis important control point method) and quality deterioration prevention. In this regard, Patent Document 2 attempts to circulate and supply warm air to the thawing chamber in a uniform state in the vertical direction.

  In patent document 2, it arrange | positions in the ceiling duct in the state which made the axial flow fan and the heating unit approach. In this case, the vertical width of the ceiling duct is increased by the height of the heating unit, so that the thawing cabinet becomes high, and handling at the time of transportation and installation of the thawing cabinet is not easy. Since the axial fan blows air on the upper side of the thawing chamber, the air blowing to the thawing chamber is not uniform in the vertical direction, and thawing unevenness is likely to occur.

  Since the axial fan and the heating unit are close to each other, the space existing between the two is small, and the air pressure in the space between the two tends to be low due to suction by the axial fan. Accordingly, a part of the air on the downstream side of the axial fan is easily returned to the heating unit side, and the blowing efficiency is lowered.

  Accordingly, an object of the present invention is to provide a thawing box that can efficiently thaw a frozen product in a thawing chamber.

  As shown in FIG. 1 and FIG. 2, the present invention has a first duct 11 over the entire surface of the first and second side walls 7 and 8 on the left and right sides of the thawing chamber body 1 on the left and right sides of the thawing chamber 2 in the thawing chamber body 1. And a second duct 12 are respectively provided, and a ceiling duct 13 that connects the upper ends of the first and second ducts 11 and 12 is provided on the ceiling side of the thawing chamber 2.

  The first duct 11 is formed between one first side wall 7 of the thawing body 1 and a first inner wall 15 that has a large number of intake holes 14 and faces the thawing chamber 2. The inside of the first duct 11 is partitioned into an inner first intake passage 18 and an outer second intake passage 19 communicating with the ceiling duct 13 by a partition 17 having an opening 16 in the center. In the second intake passage 19, the air in the thawing chamber 2 is sucked into the second intake passage 19 through the intake hole 14 of the first inner wall 15, the first intake passage 18 and then the central opening 16 of the partition 17, A radial fan 5 to be sent to the ceiling duct 13 is arranged facing the central opening 16.

  The second duct 12 is formed between the other second side wall 8 of the thawing chamber body 1 and a second inner side wall 22 that has a large number of air supply holes 21 and faces the thawing chamber 2, The inside of the second duct 12 is partitioned into an outer first air supply path 25 and an inner second air supply path 26 that communicate with the ceiling duct 13 by a partition plate 24 having a large number of ventilation holes 23 on the entire surface. ing. The second air supply path 26 is provided with a heating unit 6 that warms the thawing chamber air that is sent through the ceiling duct 13, the first air supply path 25, and then the vent hole 23 of the partition plate 24. Thus, the warm air heated by the heating unit 6 is blown out from the entire surface of the second inner side wall 22 to the thawing chamber 2 through the air supply holes 21 in a substantially uniform state.

  It is desirable that the heating unit 6 has a planar spread so as to cover almost the entire surface of the second duct 12.

  By the radial fan 5, the air in the thawing chamber 2 is sucked into the second intake passage 19 through the intake hole 14 of the first inner wall 15 of the first duct 11, the first intake passage 18, and then the central opening 16 of the partition 17. After that, it is sent to the ceiling duct 13. Next, the thawing chamber air was sent from the ceiling duct 13 to the heating unit 6 through the first air supply path 25 of the second duct 12 and then through the vent hole 23 of the partition plate 24, and was heated by the heating unit 6. Thereafter, this warm air is supplied to the thawing chamber 2 from the air supply hole 21 of the second inner wall 22. The frozen product on the shelf 3 is thawed by this warm air.

  According to the present invention, the radial fan 5 is disposed in the first duct 11 on the left and right, and the heating unit 6 is disposed on the second duct 12 on the left and right. This makes it easy to transport and set up the thawing cabinet.

  Since the radial fan 5 having a large air volume is used, the air in the thawing chamber 2 can be circulated efficiently.

  When the heating unit 6 has a planar spread so as to cover almost the entire surface of the second duct 12, warm air can be reliably and uniformly supplied to the entire thawing chamber 2.

  As shown in FIG. 1 and FIG. 2, the defroster targeted by the present invention includes a defrosting chamber 2 that is disposed in the main body 1 and has an open front surface, and a number of shelves 3 that are arranged in multiple stages in the defrosting chamber 2. And a duct 4 that circulates and supplies air to the thawing chamber 2, and a radial fan 5 and a heating unit 6 disposed in the duct 4. In each shelf 3 on which the frozen product is placed, a large number of air holes are formed in a dispersed manner. The opening front of the thawing chamber 2 can be opened and closed with a door 9.

  The duct 4 includes a first duct 11 provided over almost the entire right side first side wall 7 of the thawing chamber body 1 on the right side of the thawing chamber 2 and a left side wall of the thawing chamber body 1 on the left side of the thawing chamber 2. 8 includes a second duct 12 provided over substantially the entire surface, and a ceiling duct 13 that is disposed on the ceiling side of the thawing chamber 2 and connects the upper ends of the first and second ducts 11 and 12 to each other. The lower end surfaces of the first and second ducts 11 and 12 are respectively closed.

  The first duct 11 is formed between the first side wall 7 of the thawing body 1 and the first inner wall 15 facing the thawing chamber 2. The first inner wall 15 is provided with a large number of horizontally elongated intake holes 14 (see FIG. 3). The inside of the first duct 11 is formed between an inner first intake passage 18 formed between the inner wall 15 and the first side wall 7 by a partition 17 having a large opening 16 in the center. And is partitioned off from the outer second intake passage 19 that leads to the ceiling duct 13. The first inner wall 15 and the partition 17 have a gap of 30 mm.

  In the second air intake passage 19 of the first duct 11, the radial fan 5 is disposed on the first side wall 7 in a state where the rotation center thereof faces the central opening 16 of the partition 17. The radial fan 5 sucks the air in the thawing chamber 2 into the second intake passage 19 through the intake hole 14 of the first inner wall 15 of the first duct 11, the first intake passage 18, and then the central opening 16 of the partition 17. To the ceiling duct 13.

  As shown in FIG. 3, in the first inner wall 15, the intake holes 14 are sparsely arranged in the region facing the central opening 16 of the partition 17, and the intake holes 14 are densely arranged in the outer peripheral region, The air in the thawing chamber 2 is sucked from the entire surface of the first inner wall 15 in a substantially uniform state.

  As shown in FIG. 1, the second duct 12 is formed between the second side wall 8 of the thawing body 1 and the second inner wall 22 facing the thawing chamber 2. The second inner wall 22 has a large number of air supply holes 21 (see FIG. 4). The inside of the second duct 12 is formed between the second inner side wall 22 and the first outer air supply path 25 formed between the second side wall 8 and the outer side of the second duct 12 by the partition plate 24 and leading to the ceiling duct 13. It is partitioned by a second air supply path 26 on the inner side. The partition plate 24 is also provided with a large number of ventilation holes 23 shown in FIG.

  The heating unit 6 is disposed in the second air supply path 26 of the second duct 12. The heating unit 6 has a planar spread so as to cover almost the entire surface of the second duct 12, that is, the partition plate 24, and includes a heat exchanger and a heater. The heater is provided on almost the entire surface of the heating unit 6.

  The heat exchanger is connected to a refrigeration apparatus disposed outside the upper surface of the thawing body 1, and the refrigeration apparatus includes a compressor, a condenser, and the like. The heating unit 6 warms the thawing chamber air that is sent through the ceiling duct 13, the first air supply path 25, and then the vent hole 23 of the partition plate 24. The heating unit 6 also has a function of cooling the thawing chamber air in order to keep the frozen product before thawing and the food after thawing. While the heater warms the thawing chamber air, it is also used to defrost the heat exchanger. For this purpose, a drain pan 27 is arranged below the heating unit 6.

  As shown in FIG. 5, the vent holes 23 in the lower region of the partition plate 24 are arranged more sparsely than the vent holes 23 in the upper region of the partition plate 24. Further, in the lower half of the partition plate 24, the upper side vent holes 23 are arranged more sparsely than the lower end side vent holes 23.

  Since the air flowing from the ceiling duct 13 into the first air supply path 25 tends to flow downward as it is, it tries to pass through the vent hole 23 on the lower side of the partition plate 24. However, since the vent hole 23 on the lower side of the partition plate 24 is sparse, the static pressure on the upper side of the partition plate 24 rises and the vent hole 23 on the upper side is dense. As a result, the amount of air sent from the first air supply path 25 to the heating unit 6 through the vent hole 23 of the partition plate 24 is made substantially uniform over the upper and lower sides of the partition plate 24. When the thawing chamber air is warmed by the heating unit 6, the warm air blows out from the entire surface of the second inner wall 22 to the thawing chamber 2 through the air supply holes 21 in a substantially uniform state.

  Incidentally, the partition plate 24 and the second inner wall 22 have a gap of 20 mm, and the second side wall 8 and the partition plate 24 of the thawing body 1 have a gap of 40 mm. The total opening area of the air supply holes 21 in the second inner wall 22 is smaller than the total opening area of the vent holes 23 in the partition plate 24.

  As shown in FIG. 1, rectifying plates 28 and 28 are respectively arranged at the left and right corners of the ceiling duct 13 of the duct 4, and the decompression chamber air is passed from the first duct 11 to the ceiling by the right and left rectifying plates 24 and 24. It flows smoothly to the duct 13 and from the ceiling duct 13 to the second duct 12.

Longitudinal front view of the decompression cabinet according to the present invention Front view with thawing door open AA line sectional view of FIG. BB sectional view of FIG. CC sectional view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Thaw | decompression storage body 2 Thaw | decompression room 5 Radial fan 6 Heating unit 7 1st side wall 8 2nd side wall 11 1st duct 12 2nd duct 13 Ceiling duct 14 Intake hole 15 1st inner wall 16 Central opening 17 Middle partition 18 1st Air intake path 19 Second air intake path 21 Air supply hole 22 Second inner wall 23 Vent hole 24 Partition plate 25 First air supply path 26 Second air supply path

Claims (2)

A first duct 11 and a second duct 12 are provided on the left and right sides of the thawing chamber 2 in the thawing chamber body 1 over almost the entire left and right first and second side walls 7 and 8 of the thawing chamber body 1, respectively.
A ceiling duct 13 is provided on the ceiling side of the thawing chamber 2 to connect the upper ends of the first and second ducts 11 and 12 to each other.
The first duct 11 is formed between one first side wall 7 of the thawing body 1 and a first inner wall 15 that has a large number of intake holes 14 and faces the thawing chamber 2.
The inside of the first duct 11 is divided into an inner first intake passage 18 and an outer second intake passage 19 leading to the ceiling duct 13 by a partition 17 having an opening 16 in the center,
In the second air intake passage 19, the air in the thawing chamber 2 is sucked into the second air intake passage 19 through the air intake hole 14 of the first inner wall 15, the first air intake passage 18, and then the central opening 16 of the partition 17, and then the ceiling. The radial fan 5 to be sent to the duct 13 is arranged in a state facing the central opening 16,
The second duct 12 is formed between the other second side wall 8 of the thawing chamber body 1 and a second inner side wall 22 that has a large number of air supply holes 21 and faces the thawing chamber 2,
The interior of the second duct 12 is partitioned into an outer first air supply path 25 and an inner second air supply path 26 that communicate with the ceiling duct 13 by a partition plate 24 having a large number of ventilation holes 23 on the entire surface. And
The second air supply path 26 is provided with a heating unit 6 that warms the thawing chamber air sent through the ceiling duct 13, the first air supply path 25, and then the vent hole 23 of the partition plate 24,
A thawing cabinet in which the warm air heated by the heating unit 6 is blown out from the entire surface of the second inner wall 22 to the thawing chamber 2 through the air supply hole 21 in a substantially uniform state.   The thawing cabinet according to claim 1, wherein the heating unit 6 has a planar spread so as to cover substantially the entire surface of the second duct 12.

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