WO2010016090A1

WO2010016090A1 - Thawing device

Info

Publication number: WO2010016090A1
Application number: PCT/JP2008/002097
Authority: WO
Inventors: 藤崎幸博; 庄司晃
Original assignee: 株式会社菱豊フリーズシステムズ
Priority date: 2008-08-04
Filing date: 2008-08-04
Publication date: 2010-02-11
Also published as: CN102112012A

Abstract

A thawing device exhibiting excellent thermal efficiency equivalent to or better than that of a conventional thawing device in which relative humidity in the thawing chamber can be maintained at about 100% during operation of the thawing device. The thawing device is provided with a controller for controlling a cooling mechanism and a vapor supply mechanism, in the thawing chamber, to satisfy a formula (1); ΔQc≒ΔQv (in the formula, ΔQc is sensible heat to be robbed through cooling by coolant, ΔQv is latent heat and sensible heat applied by vapor from a vapor release body) and a formula (2); Hin>Hout (in the formula, Hin is the quantity of humidification by vapor from the vapor release body, Hout is the quantity of dehumidification by the coolant).

Description

Defroster

The present invention relates to a thawing apparatus that performs thawing using latent heat of steam.

As a conventional thawing device, for example, a steam generator and a cooler are arranged outside a thawing cabinet that is a building, and the thawing chamber formed inside the thawing cabinet and the steam generator and the cooler are connected to each other. By connecting with a pipe and cooling the steam generated by the steam generator with a cooler, the temperature and humidity of the steam can be adjusted, and the material to be thawed placed inside the thawing chamber is defrosted by the latent heat of the steam. A configuration is known.

However, in the conventional thawing apparatus as described above, since the thawing chamber forming the thawing chamber is a building, the entire apparatus becomes large, and it is naturally impossible to carry the apparatus and it is expensive. Met. In addition, a steam generator and a cooler are arranged outside the thawing cabinet, and the thawing chamber formed inside the thawing cabinet and the steam generator and the cooler are connected outside the thawing cabinet, so heat loss Was large and uneconomical.

On the other hand, in Patent Document 1, for example, a steam supply mechanism, a cooling mechanism, and a thawing chamber are provided in the main body cabinet for the purpose of providing a thawing device with improved thermal efficiency. In addition to forming an inlet and a thawing steam outlet, the thawing steam outlet and the thawing steam inlet are connected to each other via a steam circulation channel, and a steam discharger of the steam supply mechanism is provided in the middle of the steam circulation channel. And a cooling body of a cooling mechanism have been proposed.

Further, as a more preferable aspect, the steam supply mechanism is configured by connecting a steam discharge body to the steam generator, and the cooling mechanism is configured by connecting the cooling body to the cooler, and the steam supply mechanism is located below the thawing chamber. It has been proposed to arrange a steam generator of the cooling mechanism and a cooler of a cooling mechanism above the thawing chamber.

Here, when thawing an object to be thawed, it is preferable to perform thawing in a low temperature and high humidity atmosphere. If the temperature is low, it is possible to suppress the growth of bacteria on the material to be thawed and the quality of the surface of the material to be thawed, and if the humidity is high, the material to be thawed is dried and the surface is damaged. This is because the amount of moisture condensed on the surface of the material to be thawed and the amount of heat imparted thereby can be increased.
JP-A-11-290046

However, in the thawing device described in Patent Document 1, the material to be thawed cannot always be thawed continuously at low temperature and high humidity. For example, it is described that the internal temperature of the thawing chamber is 3 ° C. to 5 ° C., and the humidity of the circulating steam is about 100%. However, when humidifying at a low temperature, the steam is likely to condense. The relative humidity in the thawing chamber becomes unstable and it is difficult to keep it at around 100%. That is, in the prior art, a specific method for constantly maintaining the relative humidity in the thawing chamber near 100% has not been clarified.

Accordingly, an object of the present invention is to provide a thawing device that has a thermal efficiency equivalent to or higher than that of a conventional thawing device and can maintain the relative humidity in the thawing chamber at about 100% during operation of the thawing device. It is in.

In order to achieve the above object, the decompression device according to the present invention is:
A main body cabinet; a thawing chamber formed inside the main body cabinet and having a thawing steam inlet and a thawing steam outlet; and the thawing steam outlet and the thawing steam inlet communicate with each other outside the thawing chamber. A steam circulation path formed by: a steam supply mechanism including a steam discharge body provided in the steam circulation path; a cooling mechanism including a cooler and a cooling body provided in the steam circulation path; A steam circulation fan including a motor for supplying air to circulate the steam cooled by the cooling body to the steam circulation channel and the thawing chamber;
In the thawing chamber,
Relational expression (1): ΔQc≈ΔQv
(In the relational expression (1), ΔQc is the sensible heat lost by the cooling by the cooling body, and ΔQv is the latent heat and sensible heat applied by the steam from the steam emitting body) and the relational expression (2): Hin> Hout
(In relational expression (2), Hin is the amount of humidification by the steam from the vapor emitter, and Hout is the dehumidification amount by the cooling body.)
And a control device that controls the cooling mechanism and the steam supply mechanism.

According to such a configuration, by satisfying the relational expression (1), the thawing temperature (SP value) in the thawing chamber can be stably maintained substantially constant, and the relational expression (2) is satisfied. Thus, the atmosphere in the thawing chamber can be maintained at high humidity. That is, by operating the cooling mechanism and the steam supply mechanism in a well-balanced manner, it is possible to perform thawing while maintaining the thawing chamber in a high humidity atmosphere.

Here, the sensible heat ΔQc taken away by the cooling by the cooling body is obtained by measuring the temperature difference and the air volume in the front and rear portions of the cooling body using, for example, a thermometer and an anemometer, and the unit is kcal / h. Further, the sensible heat of the latent heat and sensible heat ΔQv applied by the steam from the vapor emitter is measured, for example, by using a thermometer and an anemometer to measure the temperature difference and the air volume at the front and rear portions of the vapor emitter. The unit is kcal / h. The latent heat in ΔQv can be determined by using the specific enthalpy in the temperature-based water saturation table since the temperature of the vapor released under atmospheric pressure is 100 ° C.

Further, the humidification amount Hin by the steam from the steam emitter is obtained by measuring the amount of steam passing through the pipe connected to the thawing chamber using, for example, a steam flow meter, and the unit is kg / h. . The dehumidification amount Hout by the cooling body is obtained by measuring the drain amount from the cooling body using, for example, a scale, and the unit is kg / h.

In the thawing device, the vapor emitter has an inner pipe to which the vapor is supplied, and an opening that covers one end of the inner pipe so as to be closed and supplies the vapor into the vapor circulation channel. And an outer tube. In particular, a compact outer shape is preferable as long as it does not affect the amount of steam.

According to such a configuration, the surface area of the vapor emitter can be reduced with respect to the humidification amount, dry steam can be supplied in an overheated state, and the generation of sensible heat during the humidification operation is appropriately controlled. can do.

The steam circulation flow path includes a substantially horizontal portion including a recess in which the steam emitter is installed, a substantially vertical portion having one end connected to the substantially horizontal portion and the other end connected to the thawing steam inlet, It is preferable that it is comprised.

According to such a configuration, since the wind from the fan for steam circulation does not directly hit the steam emitter, the release of sensible heat accompanying the release of steam from the steam emitter is minimized. The ratio of humidification (latent heat) can be increased.

In the steam circulation channel, it is preferable that at least a part of the connection portion of the substantially horizontal portion and the substantially vertical portion is formed in a curved shape.

According to such a configuration, in particular, when the humidified wind (steam) has a right-angle portion in a portion where the substantially horizontal portion and the substantially vertical portion are connected, moisture tends to condense in the right-angle portion. If there are few or no such right-angled parts, moisture condensation can be suppressed.

Moreover, it is preferable that the motor is installed outside the main body cabinet.

According to such a configuration, it is possible to suppress heat generation (sensible heat) of the motor from reaching the freezer compartment, and it is easy to maintain a high humidity atmosphere in the freezer compartment as described above. Further, since the motor does not have to be exposed to a high humidity atmosphere, it is advantageous for the durability of the motor.

It is preferable that the steam supply mechanism includes a steam feeder that is connected to the steam emitter through a steam supply pipe.

According to such a configuration, it is possible to more reliably supply steam to the steam circulation channel and the freezer compartment. In addition, the said steam supply machine does not need to be incorporated in the freezing apparatus of this invention. When the steam supply machine is not built in the thawing apparatus of the present invention, the steam supply pipe may be connected to an external steam supply machine such as a boiler at a place where the thawing apparatus is installed.

In addition, the thawing vapor inlet includes a plurality of inflow openings, and the opening area of the inflow opening is formed so as to decrease in order from the upper part to the lower part of the thawing chamber,
It is preferable that the thawing steam outlet includes a plurality of outflow openings and an opening area of the outflow opening is formed so as to decrease in order from the upper part to the lower part of the thawing chamber.

According to such a configuration, a substantially uniform steam flow can be formed substantially horizontally in the thawing chamber, the steam can be evenly contacted with all the objects to be thawed, and the thawing efficiency can be improved. .

The present invention also relates to a method for operating the thawing device of the present invention.
That is, the operation method of the thawing device according to the present invention is:
A main body cabinet; a thawing chamber formed inside the main body cabinet and having a thawing steam inlet and a thawing steam outlet; and the thawing steam outlet and the thawing steam inlet communicate with each other outside the thawing chamber. A steam circulation path formed by: a steam supply mechanism including a steam discharge body provided in the steam circulation path; a cooling mechanism including a cooler and a cooling body provided in the steam circulation path; A steam circulation fan including a motor for supplying air to circulate the steam cooled by the cooling body to the steam circulation channel and the thawing chamber,
In the thawing chamber,
Relational expression (1): ΔQc≈ΔQv
(In formula (1), ΔQc is sensible heat taken away by cooling by the cooling body, and ΔQv is latent heat and sensible heat applied by steam from the steam emitter) and relational expression (2): Hin> Hout
(In Formula (2), Hin is the humidification amount by the vapor | steam from the said vapor | steam discharge body, and Hout is the dehumidification amount by the said cooling body.)
The cooling mechanism and the steam supply mechanism are controlled to satisfy the above condition.

According to the thawing device of the present invention as described above, the thermal efficiency and the thawing efficiency are exhibited as much as or more than the conventional thawing device, and the relative humidity in the thawing chamber is approximately 100% (for example, 95%) when the thawing device is operated. It is possible to thaw the material to be thawed in a more fresh state.

It is the front view which made the cross section the part which shows the structure of suitable one Embodiment of the decompression | decompression apparatus of this invention. FIG. 2 is a view of the decompression device 1 in FIG. FIG. 2 is a view of the decompression device 1 in FIG. 1 as viewed from the direction of an arrow Y. 3 is a configuration diagram for explaining a configuration of an embodiment of a steam supply mechanism 3. FIG. 3 is a schematic cross-sectional view for explaining the structure of the vapor emitter 9. FIG. FIG. 6 is a schematic cross-sectional view taken along line AA in FIG. 5 (that is, a schematic vertical cross-sectional view of the vapor emitter 9). It is the schematic which expanded the vapor emitting body 9 vicinity in FIG. FIG. 2 is a configuration diagram for illustrating a configuration of an embodiment of a cooling mechanism 4.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same or an equivalent part, and the overlapping description may be abbreviate | omitted.

FIG. 1 is a front view, partly in section, showing the configuration of a preferred embodiment of the thawing device of the present invention. As shown in FIG. 1, the thawing device 1 of the present embodiment includes a main body cabinet 2; a thawing chamber 5 formed inside the main body cabinet 2 and having a thawing steam inlet 31 and a thawing steam outlet 33; A steam circulation passage 34 formed by communicating the thawing steam outlet 33 and the thawing steam inlet 31 outside the thawing chamber 5; a steam supply including a steam discharger 9 provided in the steam circulation passage 34 A mechanism 3; a cooling mechanism 4 including a cooler 19 and a cooling body 20 provided in the steam circulation passage 34; and for circulating the steam cooled by the cooling body 20 to the steam circulation passage 34 and the thawing chamber 4. And a steam circulation fan 39 including a motor for supplying air to the fan.

The thawing device 1 is integrally formed by providing a steam supply mechanism 3, a cooling mechanism 4, and a thawing chamber 5 in a substantially rectangular box-shaped main body cabinet 2, respectively. As shown in FIG. 1, an operation panel including a control device 42 is provided, and the thawing device 1 can be easily moved by a rolling wheel 43 attached to the lower portion of the main body cabinet 2. Of course, the roller 43 is not provided in the case of a large size. Then, the steam generated by the steam supply mechanism 3 is cooled by the cooling mechanism 4 to be steam having an appropriate temperature and humidity, and the material to be thawed placed in the thawing chamber 5 is defrosted by the latent heat of the steam. It is.

The steam supply mechanism 3 only needs to include at least the steam discharge body 9 provided in the steam circulation flow path 34, and a boiler or the like that is a steam generator may be provided in the thawing device 1 itself. You may use what was provided outside.

When supplying steam from the steam generator provided outside the thawing apparatus 1 to the thawing measure 1, for example, the configuration shown in FIG. 4 is adopted. FIG. 4 is a configuration diagram showing an embodiment of the steam supply mechanism. As shown in FIG. 4, a drain separator 7 is connected in communication with a steam generator 6 such as a boiler through a communication pipe 8, and a steam discharger 9 is connected in communication with the drain separator 7 through a steam supply pipe 10. The communication pipe 8 branches in the middle, and is connected in communication with a middle portion of the drain pipe 11 connected to the drain separator 7 via a steam trap 12. Further, a strainer 13, a pressure reducing valve 14, a pressure gauge 15, a solenoid valve 16, a two-way valve 17 and a check valve 18 are provided.

Here, a nozzle having a double pipe grid structure, which is a preferred embodiment of the vapor emitter 9, will be described with reference to FIGS. FIG. 5 is a schematic cross-sectional view for explaining the structure of the vapor emitter 9, and FIG. 6 is a schematic cross-sectional view taken along the line AA in FIG. is there.

As shown in FIGS. 5 and 6, the vapor emitter 9 covers the inner tube 9 a to which the vapor is supplied from the direction of the arrow shown in FIG. 5 and closes one end of the inner tube 9 a and defrosts the vapor. And an outer tube 9b supplied into the steam circulation channel 34 of the apparatus 1. The inner pipe 9a is provided with a plurality of openings 9a1 for sending steam to the outer pipe 9b on the lower side in the substantially vertical direction, and the outer pipe 9b has a plurality of openings for sending steam to the steam circulation passage 34. The opening 9b1 is provided on the lower side in the substantially vertical direction.

According to such a configuration, the inner tube 9a is heated by the sensible heat of the steam supplied from the direction of the arrow, and the steam is heated by the heated inner tube 9a in the outer tube 9b. Then, dry steam is supplied from the outer tube 9b to the thawing device 1 in an overheated state.

Also, by creating a compact outer shape that does not affect the amount of steam, the generation of sensible heat during the humidification operation can be appropriately controlled. Although not shown, for example, if an opening is provided on the lower side of the outer tube 9b in the substantially vertical direction, it is possible to more reliably discharge moisture mixed in the steam out of the system.

Next, FIG. 7 is an enlarged schematic view of the vicinity of the vapor emitter 9 in FIG. As shown in FIG. 7, the steam circulation flow path 34 includes a substantially horizontal portion 34a including a recess 34c in which the steam emitter 9 is installed, a first end connected to the substantially horizontal portion 34a, and the other end a defrosting steam inlet (not shown). And a substantially vertical portion 34b connected to the other. The concave portion 34c is a step portion that is lowered by one step in the substantially horizontal portion 34a, and its height H and width L can be appropriately selected within a range in which the effects of the present invention can be obtained.

According to such a configuration, the wind from the steam circulation fan 39 (arrow Z in FIG. 7) does not directly hit the vapor emitter 9, and therefore is released from the vapor emitter 9 as the steam is released. Sensible heat, that is, sensible heat reaching the thawing chamber 5 from the vapor emitter 9 can be suppressed to a minimum, and the ratio of humidification (latent heat) can be increased.

Further, in the steam circulation flow path 34, as shown in FIG. 7, at least a part of the connection portion of the substantially horizontal portion 34a and the substantially vertical portion 34b is formed in a curved surface shape to form a curved surface portion 34d. ing. Since the connection portion (particularly the corner portion) of the substantially horizontal portion 34a and the substantially vertical portion 34b usually includes a right-angle portion, moisture tends to condense, but according to the configuration shown in FIG. 7, humidified wind (steam) In the direction indicated by the arrow Z, the steam is smoothly circulated in the corners, so that condensation of moisture can be suppressed.

As shown in FIG. 8, the cooling mechanism 4 is configured by connecting and connecting a unit cooler as a cooling body 20 to a cooler 19 via a cooling gas circulation pipe 21. In addition, an electromagnetic valve 22, an expansion valve 23, an accumulator 24, and a suction pressure adjustment valve 24 'are provided. Such a cooling mechanism 4 has a configuration in which the refrigerant cooled by the cooler 19 is supplied to the cooling body 20 and the ambient temperature of the cooling body 20 is lowered.

As shown in FIG. 1, the thawing chamber 5 includes a substantially rectangular box-shaped thawing chamber body 25 having an opening at the front, and a lid body 26 covering the opening so as to be openable and closable. Placed in position. Moreover, the handle 27, the hinge 28, and the tray receiver 29 are included, the tray is supported by a pair of left and right tray receivers 29 so that the tray can be pulled out, and an object to be thawed can be placed on the top of the tray.

Further, in the thawing chamber 5, as shown in FIG. 2, a thawing steam inlet 31 is formed in the left side wall 30, and as shown in FIG. 3, a thawing steam outlet 33 is formed in the right side wall 32. Yes. The thawing steam outlet 33 and the thawing steam inlet 21 are connected to each other through the steam circulation channel 34 at the outer peripheral portion of the thawing chamber 5.

As shown in FIG. 2, the thawing steam inlet 31 has an opening per unit area of the left side wall 30, with the interval between adjacent thawing steam inlets 31 becoming narrower from the upper side to the lower side of the left side wall 30 of the thawing chamber 5. The area is formed so as to increase in order. On the other hand, as shown in FIG. 3, the thawing steam outlet 33 has a larger interval between the adjacent thawing steam outlets 33 from the upper part to the lower part of the right side wall 32 of the thawing chamber 5. It is formed so that the opening area becomes smaller in order.

According to such a configuration, the steam flow flowing in from the upper and lower portions of the left side wall 30 and flowing out from the upper and lower portions of the right side wall 32 can be made substantially horizontal and substantially uniform in the thawing chamber 5. It is possible to evenly bring the steam into contact with the material to be thawed and improve the thawing efficiency.

The steam circulation channel 34 includes a substantially horizontal portion 34a and a substantially vertical portion 34b as described in FIG. More specifically, as shown in FIG. 1, a substantially horizontal portion 34a (not shown) located between the ceiling wall 35 of the thawing chamber body 25 and the ceiling wall 36 of the body cabinet 2, and the thawing chamber body. And a steam inflow side circulation flow path 34e (substantially vertical portion) and a steam outflow side circulation flow path 34f (substantially vertical portion) located on the side of 25.

The steam inflow side circulation flow path 34e (substantially vertical portion) extends from between the ceiling wall 35 of the thawing chamber body 25 and the ceiling wall 36 of the body cabinet 2 to the left side wall 30 of the thawing chamber body 25 and the left side wall of the body cabinet 2. 37, the steam outflow side circulation flow path 34 f (substantially vertical portion) extends from between the right side wall 32 of the thawing chamber body 25 and the right side wall 38 of the body cabinet 2 to the ceiling wall of the thawing chamber body 25. 35 communicates with the ceiling wall 36 of the main body cabinet 2.

As shown in FIG. 1, the steam circulation passage 34 is provided with a steam discharge body 9 of the steam supply mechanism 3 and a cooling body 20 of the cooling mechanism 4 in the middle. A steam generator 6 is provided on the lower side in the vertical direction of the thawing chamber 5, and a steam emitter 9 is provided on the upper left side of the ceiling wall 35 of the thawing chamber 5, so that the steam emitter 9 and the steam generator 6 communicate with each other. The steam supply pipe 10 to be connected passes through the outside of the steam inflow side circulation channel 34e. With such a configuration, it is possible to prevent sensible heat generated from the steam supply pipe 10 from reaching the thawing chamber 5.

On the other hand, as shown in FIGS. 2 and 3, the cooler 19 is provided on the back side of the thawing device 1, and the cooling body 20 is provided on the upper right side of the ceiling wall 35 of the thawing chamber 5. Between the steam discharger 9 and the steam discharger 9, a steam circulation fan 39 is provided. Although the steam is released in the vicinity of the steam circulation fan 39, since the wind does not directly hit the steam discharger 9, the generation of sensible heat can be minimized, and substantially the same as the substantially horizontal portion 34a through which the steam flows. By securing the total distance from the vertical portion 34b, high humidity can be maintained in a low temperature zone.

Although not shown, a motor for driving the steam circulation fan 39 is provided outside the main body cabinet 2. Thereby, it can suppress that the heat_generation | fever (sensible heat) of a motor arrives in the freezer compartment 5, and it is easy to maintain a high-humidity atmosphere in the freezer compartment 5. Since the motor does not have to be exposed to a high humidity atmosphere, it is advantageous for the durability of the motor.

By forcibly circulating the steam released from the steam discharger 9 by the steam circulation fan 39, the steam flows into the inside of the thawing chamber 5 from the thawing steam inlet 31 through the steam inlet side circulation passage 34e. Then, the object to be thawed placed inside the thawing chamber 5 is contacted, and the material to be thawed is defrosted by the latent heat of the steam, and then flows out from the thawing steam outlet 33 to the outside of the thawing chamber 5, Through the circulation flow path 34b, the steam circulation fan 39 again forcibly circulates.

Here, as the steam circulation fan 39, a conventionally known fan having various air blowing capabilities can be used. For example, one or a plurality of fans are used, and for example, 1. It is preferable that a wind of 0 to 1.5 m / s can be sent. If it is possible to blow such an air volume, steam can be forcedly circulated more reliably. For example, two fans with an air volume of 1000 CMH may be used.

At that time, by adjusting the humidity and temperature of the steam with the steam discharger 9 and the cooling body 20, during the operation of the thawing device 1, the internal temperature of the thawing chamber 5 is, for example, room temperature (for example, 24 ° C. to 25 ° C.). The relative humidity in the thawing chamber 5 is controlled so as to be approximately 100% at all times. More specifically, in the thawing chamber 5, the cooling mechanism 4 and the steam supply mechanism 3 are controlled by the control device 42 so as to satisfy the relational expression (1): ΔQc≈ΔQv and the relational expression (2): Hin> Hout. Control.

The sensible heat ΔQc taken away by the cooling by the cooling body 20 is obtained by measuring the temperature difference and the air volume at the front and rear portions of the cooling body 20 using a thermometer and an anemometer (not shown), and its unit Is kcal / h. Further, the sensible heat of the latent heat and the sensible heat ΔQv applied by the steam from the steam emitter 9 is obtained by using a thermometer and an anemometer (not shown) and a temperature difference between the front and rear portions of the steam emitter 9 and It is obtained by measuring the air volume, and its unit is kcal / h. The latent heat in ΔQv can be estimated on the assumption that 100 ° C. steam is released into the atmosphere.

Further, the humidification amount Hin by the steam from the steam emitter 9 is obtained by measuring the steam passage amount in the pipe connected to the thawing chamber 5 using a steam flow meter (not shown), and the unit is kg / h. The dehumidification amount Hout by the cooling body 20 is obtained by measuring the drain amount from the cooling body 20 using a scale, and the unit is kg / h.

According to the thawing device 1 of the present embodiment as described above, the thawing temperature (SP value) in the thawing chamber 5 can be stably maintained substantially constant by satisfying the relational expression (1). By satisfying the relational expression (2), the atmosphere in the thawing chamber 5 can be maintained at high humidity (relative humidity of 95% or more). In other words, by operating the cooling mechanism 4 and the steam supply mechanism 3 in a well-balanced manner, the thawing chamber 5 can be defrosted while maintaining a high humidity atmosphere.

Further, since the thawing chamber 5 is interposed between the steam generator 6 of the steam supply mechanism 3 and the cooler 19 of the cooling mechanism 4, and the motor of the steam circulation fan 39 is installed outside the main body cabinet 2, Interference between the steam generator 6 at a high temperature and the cooler 19 at a low temperature can be prevented as much as possible, and heat loss can be reduced.

In addition, the thawing device 1 can be integrally formed, the thawing device 1 can be made compact, and the thawing device 1 can be easily transported and moved. And installation location can be changed easily.

As mentioned above, although one exemplary embodiment of the present invention has been described with reference to the drawings, the present invention is not limited to these. For example, it is also possible to employ techniques known in the field including the above-mentioned Patent Document 1.

According to the thawing device of the present invention, the thermal efficiency is as good as or better than that of the conventional thawing device, and the relative humidity in the thawing chamber can be maintained at about 100% during operation. In addition, since the thawing device of the present invention can be made compact, it can be easily transported and moved, and can be installed in various places and used for thawing various objects to be thawed.

Claims

With the main cabinet;
A thawing chamber formed inside the body cabinet and having a thawing steam inlet and a thawing steam outlet;
A steam circulation channel formed by communicating the thawing steam outlet and the thawing steam inlet outside the thawing chamber;
A steam supply mechanism including a steam discharge body provided in the steam circulation channel;
A cooling mechanism including a cooler and a cooling body provided in the steam circulation channel;
A steam circulation fan including a motor for supplying air to circulate the steam cooled by the cooling body to the steam circulation channel and the thawing chamber;
In the thawing chamber,
Relational expression (1): ΔQc≈ΔQv
(In formula (1), ΔQc is sensible heat taken away by cooling by the cooling body, and ΔQv is latent heat and sensible heat applied by steam from the steam emitter) and relational expression (2): Hin> Hout
(In Formula (2), Hin is the humidification amount by the vapor | steam from the said vapor | steam discharge body, and Hout is the dehumidification amount by the said cooling body.)
A control device for controlling the cooling mechanism and the steam supply mechanism so as to satisfy
A thawing device.
The steam discharger includes an inner pipe to which the steam is supplied, and an outer pipe having an opening that covers one end of the inner pipe and closes one end of the inner pipe and supplies the steam into the steam circulation channel. is being done,
The thawing device according to claim 1.
The steam circulation flow path includes a substantially horizontal portion including a recess in which the steam emitter is installed, and a substantially vertical portion having one end connected to the substantially horizontal portion and the other end connected to the thawing steam inlet. is being done,
The thawing device according to claim 1.
At least a part of the connection portion of the substantially horizontal portion and the substantially vertical portion is formed in a curved surface;
The thawing device according to claim 3.
The motor is installed outside the body cabinet;
The thawing device according to claim 1.
The steam supply mechanism includes a steam feeder connected to the steam emitter through a steam supply pipe;
The thawing device according to claim 1.
The thawing vapor inlet includes a plurality of inflow openings, and the opening area of the inflow opening is formed so as to decrease in order from the upper part to the lower part of the thawing chamber,
The thawing vapor outlet includes a plurality of outflow openings, and the opening area of the outflow openings is formed so as to decrease in order from the upper part to the lower part of the thawing chamber,
The thawing device according to claim 1.
A main body cabinet; a thawing chamber formed inside the main body cabinet and having a thawing steam inlet and a thawing steam outlet; and the thawing steam outlet and the thawing steam inlet communicate with each other outside the thawing chamber. A steam circulation path formed by: a steam supply mechanism including a steam discharge body provided in the steam circulation path; a cooling mechanism including a cooler and a cooling body provided in the steam circulation path; A steam circulation fan including a motor for supplying air to circulate the steam cooled by the cooling body to the steam circulation channel and the thawing chamber,
In the thawing chamber,
Relational expression (1): ΔQc≈ΔQv
(In formula (1), ΔQc is sensible heat taken away by cooling by the cooling body, and ΔQv is latent heat and sensible heat applied by steam from the steam emitter) and relational expression (2): Hin> Hout
(In Formula (2), Hin is the humidification amount by the vapor | steam from the said vapor | steam discharge body, and Hout is the dehumidification amount by the said cooling body.)
Controlling the cooling mechanism and the steam supply mechanism to satisfy
A method of operating a thawing device.
Heating the steam with sensible heat of the steam to provide a superheated state and supplying the steam into the steam circulation channel;
The operation method of the thawing apparatus according to claim 8.
Circulating the steam in the steam circulation channel without directly applying the wind from the steam circulation fan to the steam emitter;
The operation method of the thawing apparatus according to claim 8.
Circulating the steam without stagnation in a part of the steam circulation flow path;
The operation method of the thawing device according to claim 8.