WO2020014801A1

WO2020014801A1 - Integrated freezing and thawing cabinet, and method for using integrated cabinet to freeze and thaw meat

Info

Publication number: WO2020014801A1
Application number: PCT/CN2018/000337
Authority: WO
Inventors: 邱郁彬; 赵瑞杰; 陈洁辉
Original assignee: 邱郁彬; 赵瑞杰; 陈洁辉
Priority date: 2018-07-20
Filing date: 2018-09-21
Publication date: 2020-01-23
Also published as: CN108826787B; CN108826787A

Abstract

Disclosed is an integrated freezing and thawing cabinet, comprising a heat preservation box and sealed containers (3). The heat preservation box comprises a freezing compartment (1) and a thawing compartment (2), wherein box-type frames are respectively fixed inside the freezing compartment (1) and the thawing compartment (2); sealing plates (13, 14, 15, 16 and 23, 24, 25, 26) are fixed on the top, the bottom, the front and the back of the frames; an air outlet duct board (11) and an air returning duct board (12) are respectively fixed on the left side and the right side of each frame; the sealed containers (3) are in a flat shape and can be placed in the frames of the freezing compartment (1) and the thawing compartment (2) in a layered manner; rows of heat conducting fins (31) are welded or riveted to an upper surface and a lower surface of each sealed container (3); a channel (33) is formed by means of a gap between two adjacent rows of heat conducting fins (31), one end of the channel is aimed at air outlet holes (111, 211) of the air outlet duct board (11) and the other end is aimed at air returning holes of the air returning duct board (12). The bottom of the frame in the freezing compartment (1) is provided with a cold air generating apparatus; and the bottom of the frame in the thawing compartment (2) is provided with a cold and hot air flow generating apparatus. The freezing speed and the thawing speed of the integrated cabinet are fast, which not only can effectively suppress the propagation of microbes, better protecting the quality of food materials, but also can save on energy greatly. Further disclosed is a method for using the integrated cabinet to freeze and thaw meat.

Description

Freezing and thawing integrated cabinet and method for freezing and thawing meat by using the integrated cabinet

Technical field

The present invention relates to the technical field of freezing and thawing foods, in particular to a freezing and thawing device for food materials, and more particularly to a freezing and thawing integrated cabinet for fast freezing and rapid thawing of food materials using cold and heat exchange. The invention also relates to a method for freezing and thawing meat by using the integrated cabinet.

Background technique

Freezing refers to the process of freezing liquid water in food such as fish and meat into a solid state by a low temperature method. This is a safe and healthy storage method that can effectively inhibit the growth and reproduction of microorganisms in food and prevent food from spoiling. At the same time, it is easy to return to its original state. Thawing is the reverse process of freezing, which is to melt the ice crystals formed during the freezing process into water. In daily life, in order to extend the storage time of meat products, freshly purchased meat is generally stored in a freezer or a freezer of a domestic refrigerator. The freezing temperature of an existing freezer or a domestic refrigerator is generally set to below zero. 16 ℃, this is set in consideration that the ingredients can be stored for more than 3 months. For the catering industry or households, the storage time of ingredients is generally several days to ten days. This setting not only wastes energy, but also requires cooking. It takes a long time to defrost; in addition, the existing freezing device (especially a cold store) and the defrost device (usually located in the kitchen) are generally not located in the same place, and the distance is relatively long, resulting in a longer time to transfer ingredients in the middle, increasing In addition, the existing freezing and defrosting devices, in the process of freezing and defrosting the food, only cool or heat the entire space where the food is located, without directly cooling the food. The application of energy exchange in a localized area results in poor freezing and thawing.

Summary of the invention

In order to overcome the above problems, an object of the present invention is to provide an integrated cabinet for freezing and thawing. The integrated cabinet not only has a high speed of freezing and thawing, but also the ingredients frozen and thawed by the integrated cabinet are easy to access and can avoid loss of nutrients. And air pollution to better ensure the quality of ingredients.

Another object of the present invention is to provide a method for freezing and thawing meat using the above-mentioned integrated cabinet.

In order to achieve the above object, the integrated refrigerating and thawing cabinet of the present invention includes a thermal insulation box, which is divided into two independent spaces, one of which is a freezing chamber, and the other independent space is a thawing chamber, a freezing chamber and The thawing room is closed with insulation doors; the freezer and thawing rooms are fixed with box-shaped frames, and the upper and lower sides of the frame are fixed with sealing plates. The left and right sides of the frame are fixed with air outlet plates and return air plates. The duct board is provided with air outlet holes, the return air duct board is provided with air return holes, a cold air generating device is provided at the bottom of the frame in the freezing chamber, and a cold and hot air generating device is provided at the bottom of the frame in the thawing chamber; the integrated cabinet further includes a plurality of closed Containers, sealed containers are flat and can be layered in the frame of the freezer or thawing chamber. The upper and lower surfaces of the sealed container are welded or riveted with rows of thermally conductive rockers. The gap between two adjacent rows of thermally conductive rockers is formed. One end of the channel is aligned with the air outlet hole of the corresponding air duct plate, and the other end is aligned with the air return hole of the corresponding air duct plate. The front seal plates of the freezer and thawing rooms are provided with closed containers. The outlet; the cold air generating device includes a first evaporator and a first forced convection fan, the first evaporator is electrically connected to a first refrigeration unit located below the freezer compartment and located outside the freezer; the hot and cold air current generator includes a second evaporator, An electric heater and a second forced convection fan. The second evaporator is electrically connected to a second refrigeration unit located below the defrosting chamber and located outside the defrosting chamber. The left and right sides of the upper cover plate of the freezing chamber extend to the left and right of the freezing chamber. Side wall connection, the front and back sides of the lower sealing plate extend to the front and rear side walls of the freezer compartment, so that the area where the air-conditioning device is located, the air outlet of the air duct plate, the area where the closed container is located, and the air return plate The air outlets of the channels constitute independent cooling air circulation channels in the freezing chamber; the left and right sides of the upper sealing plate of the defrosting chamber extend to connect with the left and right side walls of the thawing chamber, and the front and back sides of the lower sealing plate extend to the front and back sides of the thawing chamber. The wall is connected, so that the area where the hot and cold air current generating device is located, the air outlet of the air outlet duct, the area where the closed container is located, and the air outlet of the return air duct constitute a thawing chamber. Separate hot and cold air circulation path.

The closed container is composed of two half shells with symmetrical upper and lower structures. The half shell is made of food-grade stainless steel. The upper and lower shells are hinged on one side to form a flip cover structure. The height of the closed container is preferably 30mm- 100mm.

In order to further improve the heat conduction effect of the hermetic container, the above-mentioned hermetically sealed upper and lower surfaces of the hermetically welded or riveted heat-conducting fins are S-shaped along the length direction or through-holes are formed on the side surfaces of the fins.

In order to increase the heat transfer area between the side wall of the closed container and the ingredients, the upper and lower side walls of the closed container are provided with a row of grooves, the grooves and the heat conducting rocker are arranged in a row, and the cross section of the groove is V-shaped.

The freezing chamber further includes a first temperature controller with a microcomputer processing function. The first temperature controller is located in the first control chamber below the freezing chamber and is electrically connected to the first forced convection fan and the first refrigeration unit. The thawing chamber further includes A second temperature controller with a microcomputer processing function, the second temperature controller is located in a second control room below the thawing chamber and is electrically connected to a second forced convection fan, an electric heater, and a second refrigeration unit; the first and second The control room has a control panel and a temperature display window on the front side.

In order to timely monitor the temperature of the air flow passing through the surface of the closed container in the freezing or thawing chamber, the air outlet of the air duct plate of the freezing or thawing chamber is provided with a temperature sensor, which is connected to the corresponding temperature controller of the freezing or thawing chamber. .

In order to make it easier for the sealed container to enter and exit the freezing or thawing chamber, the sealed container is mounted on the inner side walls of the air duct plate and the return air duct plate of the freezing chamber or thawing chamber through a guide rail assembly. The outer side wall of the return air duct plate is provided with a fixing block, and the fixing block is fixed on the left and right side walls of the freezing chamber or the thawing chamber by screws.

The above-mentioned guide rail assembly is composed of a fixed guide rail, a moving guide rail, and a guide rail hanging plate. The fixed guide rail is arranged on the inner side wall of the air outlet plate and the return air passage plate. The guide rail hanging plate is fixed on the side wall of the closed container. The guide rail realizes sliding on the fixed guide rail.

In order to facilitate the movement of the integrated cabinet, support feet are provided at the bottom of the first control room and the second control room.

The present invention also provides a method for freezing and thawing meat by using the above-mentioned freezing and thawing integrated cabinet. The method includes the following steps in order:

(1) Use fresh tools to squeeze the fresh meat to the same thickness as the sealed container, place it flat in the sealed container, close the lid of the sealed container, and push the sealed container into the freezer of the integrated cabinet. , Close the insulation door of the freezer;

(2) Turn on the power of the freezer of the integrated cabinet, and the cold air generating device located at the lower part of the freezer starts to work. The cold air generated by the first refrigeration unit and the first evaporator is circulated in the independent cold air circulation path of the freezer through the first forced convection fan. , Control the temperature of the cold air passing through the surface of the closed container and the thermally conductive rocker to be kept at -8 ° C to -6 ° C, so that the meat is frozen;

(3) Turn on the power of the defrosting chamber of the integrated cabinet, and the hot and cold air current generating device located at the lower part of the defrosting chamber starts to work. The cold air generated by the second refrigeration unit and the second evaporator or the hot air generated by the electric heater is passed through the second forced convection fan. Circulate in the independent hot and cold air circulation loop of the defrosting chamber. When the temperature displayed on the control panel of the defrosting chamber is below 6 ° C and above 1 ° C, open the insulation doors of the freezing and thawing chambers. The meat will be filled and frozen. Take out the closed container, quickly push it into the insulation room, and close the insulation doors of the freezing room and the insulation room;

(4) The hot and cold air flow in a certain temperature range passes through the air outlet holes of the air outlet plate of the thawing chamber, and performs heat exchange with the surface of the closed container and the heat conductive rocker, and then returns to the hot and cold air flow through the air return holes of the air return plate. The device performs heating or cooling. When the temperature displayed on the control panel of the defrosting chamber is maintained at a constant interval of 1-6 ° C for 20-30 minutes, the defrosting process is ended and the meat is removed.

The temperature control of the cold air temperature in the freezing room and the hot and cold air flow in the thawing room is performed by the corresponding temperature controller according to the temperature of the air outlet of the corresponding air duct plate. To adjust.

Compared with the prior art, the integrated freezing and thawing cabinet of the present invention and the method for freezing and thawing meat using the integrated cabinet have the following advantages:

(1) A freezer and defrosting chamber is provided with a frame capable of erecting a closed container of the same structure. The closed container is flat, and its outer shell is made of food-grade stainless steel. The upper and lower surfaces are welded or riveted with thermally conductive fins to conduct heat. The plane where the fins are located is perpendicular to the plane where the vents are located and is consistent with the direction of the airflow in and out of the vents. The food is placed in the closed container and closely fits the inner side wall of the container. The closed or closed container is cooled or heated. The heat exchange between the upper and lower surfaces and the thermally conductive rocker can greatly increase the heat exchange area between cold air or hot air and the container shell, and better improve the efficiency and speed of freezing or thawing food ingredients.

(2) During the process of transferring ingredients from the freezer to the defrosting chamber, there is no need to open the closed container to take out the meat. Only the sealed container containing the ingredients needs to be transferred together, which not only maintains the original state of the ingredients, but also reduces The time it takes for the frozen ingredients to be transferred to the thawing chamber avoids the chance of the ingredients being contaminated.

(3) The whole process of the ingredients from freezing to thawing is stored in a closed container, and the ingredients are closely attached to the inner wall of the sealed container to ensure that the nutrients of the ingredients are not lost.

(4) Due to the forced air flow heat exchange, the freezing and thawing of the meat food is more uniform, which further guarantees the quality of the meat food.

(5) Since the container shell and the heat transfer of the meat food are used for thawing, the huge energy that causes the molecular mutation of the meat food like the microwave thawing method is avoided, and no harmful substances are generated.

(6) The freezing and thawing method of the present invention cuts the meat to a thickness equal to the height of the closed container, so that the periphery of the meat is in close contact with the inner wall of the closed container, and the freezing temperature is set at -8 ° C to -6 ° C Controlling the defrosting temperature in the range of 1-6 ° C can effectively inhibit the reproduction of microorganisms, better ensure the quality of meat, and can greatly save energy.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a meat freezing and thawing integrated cabinet according to the present invention.

FIG. 2 is a right side view of the integrated cabinet of FIG. 1. FIG.

FIG. 3 is a left side view of the integrated cabinet of FIG. 1.

FIG. 4 is a schematic structural diagram when the insulation door of the thawing chamber is opened and the closed container is slid out from the guide rail and the cover is lifted.

Fig. 5 is a sectional view taken along the direction A-A of Fig. 1.

Fig. 6 is a sectional view taken along the direction B-B in Fig. 1.

Fig. 7 is a sectional view taken along the direction C-C of Fig. 1.

FIG. 8 is a schematic structural diagram of a track assembly.

FIG. 9 is an enlarged view of an L area in FIG. 1.

FIG. 10 is an enlarged view of a region M in FIG. 2.

FIG. 11 is an enlarged view of an N region in FIG. 3.

FIG. 12 is an enlarged view of an O region of FIG. 5.

detailed description

As shown in Figures 1, 2, 3, and 4, the integrated freezing and thawing cabinet of the present invention includes a thermal insulation box. The thermal insulation box is divided into two left and right independent spaces, one of which is the freezer compartment 1, and the other is independent. The space is the thawing chamber 2. The freezing chamber and the thawing chamber are each closed by

insulation doors

10 and 20, and the freezing and thawing chambers are fixed with a box frame;

The left and right sides of the freezer frame are fixed with the air outlet plate 11 and the return air plate 12, and the upper and lower sides and the front and rear sides are fixed with the sealing

plates

13, 14, 15, and 16. The air outlet plate is provided with air outlet holes 111. The air duct plate is provided with return air holes (not shown in the figure) corresponding to the positions of the air outlet holes. The left and right sides of the upper sealing plate are extended and fixed to the left and right side walls of the freezing chamber, and the front and back sides of the lower sealing plate are extended and fixed to the freezing.

Vertical sealing plates

141 and 142 connected to the left and right side walls of the freezing chamber are provided between the front and rear side walls of the chamber, the lower sealing plate and the bottom wall of the freezing chamber. The lower sealing plate, the bottom wall of the freezing chamber and the vertical sealing plate are enclosed by Separate space 17 where the air-conditioning generator is placed; the left and right sides of the defrosting chamber frame are fixed with the air outlet plate 21 and the return air plate 22, and the upper and lower sides and the front and rear sides are fixed with the sealing

plates

23, 24, 25, 26, and the air outlet The plate is provided with air outlet holes 211, and the return air duct plate is provided with return air holes (not shown in the figure) corresponding to the positions of the air outlets. The left and right sides of the upper sealing plate are extended and fixed to the left and right side walls of the thawing chamber, and the lower seal The front and back sides of the plate are extended and fixed to the front and back side walls of the thawing chamber, and a thawing is provided between the lower sealing plate and the bottom wall of the thawing chamber. Left and right vertical side walls connected to the sealing plate 241, the lower seal plate, a bottom wall and a vertical thawing chamber surrounded sealing plate 27 may be placed separate air hot and cold air generation device, shown in Figure 5,6;

As shown in FIG. 7, the closed container 3 that can be erected in the frame of the freezing and thawing chamber is a flat box with a thickness of 30-100 mm. The box is composed of two half shells with symmetrical upper and lower structures. The body is made of food-grade stainless steel. The upper and lower shells are hinged on one side to form a flip cover structure. The upper and lower surfaces of the sealed container are welded or riveted in rows along the row of thermally conductive rockers 31 (the material of the fins is The thermal conductivity is made of copper and aluminum. The fins in the drawings of this embodiment are in the shape of straight pieces. If the thermal conductivity can be further improved, the fins can also be made into an S-shape or have through holes in the fins), The upper and lower surfaces of the closed container are provided with rows of bar-shaped grooves 32. These bar-shaped grooves are arranged alternately with the heat conductive rocker. The cross section of the groove is V-shaped to form barbs to increase the heat conduction area between the closed container and food; The front cover of the frame and the defrosting chamber are provided with inlets and outlets of a closed container. The closed container is erected on the inner wall of the air outlet plate and the return air plate through the guide rail assembly 4. The guide rail assembly is composed of a fixed guide rail 41 and a movable guide rail 42. , Rail hanging plate 43 The left and right ends of the closed container are welded to the left and right guide rail hanging plates respectively. The guide rail hanging plates are supported by the front lower wheel 421 and the middle lower wheel 422 and the rear lower wheel 423 on the moving guide rail and are supported by the rear upper wheel 426 and the middle upper wheel. 425. The front upper wheel 424 is limited and can slide on the mobile guide rail. The mobile guide rail can slide on the fixed guide rail using its rear upper wheel, middle lower wheel and front lower wheel. The front limit block 411 and the rear limit block 412 Limit the moving distance of the moving guide rail on the fixed guide rail. The fixed guide rail is fixed on the fixed block 5 through the air duct plate and the return air duct plate with screws 44. The fixed block is fixed on the left and right side walls of the freezing room or thawing room with screws. In this way, the closed container can be easily slid in and out of the freezer or thawing frame, as shown in Figures 8 and 9; the channel formed by the gap between the adjacent two rows of thermally conductive rockers on the upper and lower surfaces of the closed container 33 One end is aligned with the

air outlet hole

111 or 211 of the air duct plate, and the other end is aligned with the air return hole of the air duct plate, as shown in Figures 10, 11, and 12;

As shown in FIG. 6, the cold air generating device includes a first evaporator 61 and a first forced convection fan 71. The first evaporator is electrically connected to a first refrigeration unit 81 provided in a lower part of the freezing chamber and located outside the freezing chamber. The device is fixed on the

vertical sealing plates

141 and 142. After the first evaporator in the independent space cools the air, it is blown to the air outlet of the air outlet plate by the forced convection fan. The cold air passes through the air outlet and the surface of the closed container and After heat exchange, the heat conduction plate passes through the air return hole of the air return plate and returns to the chamber where the cold air generating device is located to form a cycle. The freezer is also provided with a temperature controller 91 with a microcomputer processing function. The temperature controller is located at The control room in the lower part of the freezing chamber is electrically connected to the first forced convection fan and the first refrigeration unit, and is also electrically connected to a temperature sensor provided at the air outlet of the air duct plate; the hot and cold air current generating device includes a second evaporator 62, The electric heater 90 and the second forced convection fan 72, the second evaporator is electrically connected to the refrigeration unit 82 provided in the lower part of the thawing chamber and located outside the thawing chamber. On the

vertical sealing plates

241 and 242, the electric heating tubes and the second evaporator in the independent space heat or cool the air and are forced to the air outlet holes of the air outlet plate by the forced convection fan. The hot and cold air flows through the air outlet holes. After exchanging heat with the surface of the closed container and its thermally conductive rocker, it returns to the chamber where the hot and cold airflow generating device passes through the air return hole of the air return duct plate to form a cycle; the thawing chamber is also provided with a second computer with microcomputer processing function. Temperature controller 92, which is located in the control room below the defrosting chamber and is electrically connected to the second forced convection fan, electric heating tube, and second refrigeration unit, and is also electrically connected to a temperature sensor provided at the air outlet of the air duct plate ; The front side of the integrated cabinet located at the lower part of the thermal insulation box is provided with a control panel 18 and a temperature display window 19 for the air outlet plate of the freezing chamber air outlet plate and a temperature display window 29 for the air outlet of the thawing room air outlet plate.

Note: The evaporator 7 is a refrigeration component of a refrigeration system. Its refrigeration principle is that the refrigerant evaporates and absorbs heat while taking away the thermal energy of the surrounding air to cool the surrounding air.

The integrated cabinet for freezing and thawing of the present invention senses the temperature of the air outlet of the air duct board by the temperature sensor and transmits it to the microcomputer of the temperature controller for processing. The temperature controller controls the refrigeration unit, the evaporator, and the electric heating tube. And the forced convection fan is turned on and off to ensure that the temperature of the surface of the sealed container passing through the freezer is -8 ° C to -6 ° C, to achieve the freezing of fresh meat, and to ensure that the temperature of the surface of the sealed container after thawing is below 6 ° C and 1 ° C. In the above, thawing of frozen meat is achieved.

When the fresh meat is frozen by using the freezer of the integrated cabinet of the present invention, the fresh meat 50 is extruded with tools or naturally to the same thickness as the height of the closed container, and placed flat in the closed container, and the closed container is closed. Close the cover, then push the closed container into the freezer compartment of the integrated cabinet, close the insulation door of the freezer compartment, and turn on the power of the freezer compartment. The cold air generating device located at the lower part of the freezer compartment starts to work. The first refrigeration unit and the first evaporator produce The cold air is circulated through the first forced convection fan in an independent cold air circulation path in the freezer. The first temperature controller adjusts the cooling capacity of the first refrigeration unit and the first forced convection fan in time according to the temperature detected by the air duct plate temperature sensor. Speed, so that the temperature of the cold air passing through the surface of the closed container and the thermally conductive rocker is -8 ° C to -6 ° C, so that the meat can be frozen; when the thawing chamber is used for thawing, the cold and hot air current generating device located at the lower part of the thawing chamber starts to work , The cold air generated by the second refrigeration unit and the second evaporator or the hot air generated by the electric heater are independent in the thawing room by the second forced convection fan The hot and cold air circulates in the circulation loop. When the temperature displayed on the control panel of the defrosting chamber is below 6 ° C and above 1 ° C, the insulation doors of the freezing and thawing chambers are opened at the same time, and the airtight containers filled with meat and frozen are frozen. Take it out, quickly push it into the insulation room, and close the insulation doors of the freezing and thawing rooms. At this time, the air in a certain temperature range (1 ° C to 6 ° C) is sent to the air outlet of the air duct plate by the second forced convection fan and blows. Heat exchange is performed to the fins on the closed container and the upper and lower surfaces of the closed container. Since the upper and lower surfaces of the closed container are closely attached to the meat, the frozen meat in the closed container is thawed. At this time, the heat-exchanged air becomes defrosted. The lower-temperature air is sucked in by the convection fan through the return air outlet on the return air duct plate (if the air temperature near the air outlet is lower than 1 ℃ at this time, the electric heating tube will enter the working state. The air near the air outlet is higher than 6 ° C, and the refrigeration unit and the evaporator enter the working state) and are sent to the air outlet on the air outlet panel again, thus forming a cycle of heat exchange. After a certain time interval, the defrosting process is complete and the meat can be taken out for use.

The freezer and thawing room of the integrated cabinet of the present invention are relatively independent, and can be frozen and thawed separately. The meat to be thawed may be meat frozen in the freezer of the present invention, or it may be frozen in other household freezers or freezers. Meat that has been frozen in other household freezers or freezers must be cut to the same thickness as the closed container, placed flat in the closed container, and then thawed in the thawing chamber.

Claims

An integrated cabinet for freezing and thawing is characterized in that: the integrated cabinet includes a thermal insulation box, which is divided into two independent spaces, one of which is a freezing chamber and the other is a thawing chamber. The compartment and the defrosting chamber are each closed by insulated doors; the freezer and thawing chambers are fixed with box-shaped frames, the upper and lower sides of the frame are fixed with sealing plates, and the left and right sides of the frame are fixed with air outlet plates and return air plates. The air outlet plate is provided with air outlet holes, the air return plate is provided with air return holes, a cold air generating device is provided at the bottom of the frame in the freezing room, and a cold and hot air flow generating device is provided at the lower portion of the frame in the thawing room; the integrated cabinet further includes: Several closed containers, which are flat and can be layered in the frame of the freezer or thawing chamber. The upper and lower surfaces of the closed container are welded or riveted with rows of thermally conductive rockers. One end of the channel formed by the gap is aligned with the air outlet hole of the corresponding air duct plate, and the other end is aligned with the air return hole of the corresponding air duct plate. The front seal plates of the freezing and thawing chambers are provided with closed containers. The inlet and outlet; the cold air generating device includes a first evaporator and a first forced convection fan, the first evaporator is electrically connected to a first refrigeration unit located at the lower part of the freezer compartment and located outside the freezer; the hot and cold air current generating device includes a second evaporator , An electric heater and a second forced convection fan, the second evaporator is electrically connected to a second refrigeration unit located at the lower part of the thawing chamber and located outside the thawing chamber; The left and right side walls are connected, and the front and back sides of the lower sealing plate are extended to connect with the front and back side walls of the freezer compartment, so that the area where the air-conditioning device is located, the air outlet of the air duct plate, the area where the closed container is located, and the return air The air outlet of the plate tunnel constitutes an independent air-conditioning circulation channel in the freezing chamber; the left and right sides of the upper sealing plate of the frame in the thawing chamber extend to connect with the left and right side walls of the thawing chamber, and the front and back sides of the lower sealing plate extend to the front and back of the thawing chamber. The side walls are connected, so that the area where the hot and cold air current generating device is located, the air outlet of the air outlet duct board, the area where the closed container is located, and the air outlet of the return air duct board are thawed. Separate hot and cold air within the circulation path.
The integrated freezing and thawing cabinet according to claim 1, wherein the closed container is composed of two half shells with symmetrical upper and lower structures, the half shell is made of food-grade stainless steel, and the upper shell and the lower shell One side of the body is hinged to form a flip cover structure. The height of the closed container is preferably 30mm-100mm.
The integrated refrigerating and defrosting cabinet according to claim 1 or 2, characterized in that the heat-conducting fins welded or riveted on the upper and lower surfaces of the closed container are S-shaped along the length direction or through holes are formed on the side surfaces of the heat-conducting fins.
The integrated freezing and thawing cabinet according to claim 3, wherein the sealed container is provided with a row of strip grooves on the upper and lower surfaces thereof, the strip grooves and the heat conducting rocker are arranged alternately, and the cross section of the groove is V The font forms a barb.
The integrated freezing and thawing cabinet according to claim 4, wherein the freezing chamber further comprises a first temperature controller with a microcomputer processing function, and the first temperature controller is located in the first control room at the lower part of the freezing chamber and It is electrically connected to the first forced convection fan and the first refrigeration unit; the thawing chamber further includes a second temperature controller with a microcomputer processing function, and the second temperature controller is located in the second control room below the thawing chamber and is in convection with the second forced convection. The fan, the electric heater and the second refrigeration unit are electrically connected; the front side of the first and second control rooms are provided with a control panel and a temperature display window.
The integrated freezing and thawing cabinet according to claim 5, wherein a temperature sensor is provided at the air outlet of the air duct plate of the freezing chamber or thawing chamber, and the temperature sensor is corresponding to a temperature controller of the freezing chamber or thawing chamber. connection.
The integrated refrigerating and thawing cabinet according to claim 6, wherein the closed container is mounted on the inner wall of the air outlet plate and the return air plate of the freezing room or thawing room through the guide rail assembly, and is positioned with the guide rail assembly. Fixing blocks are arranged on the outer side walls of the corresponding air outlet duct plate and return air duct plate, and the fixing blocks are fixed to the left and right side walls of the freezing chamber or thawing chamber by screws.
The integrated freezing and thawing cabinet according to claim 7, wherein the guide rail assembly is composed of a fixed guide rail, a moving guide rail, and a guide rail hanging plate, and the fixed guide rail is disposed on the inner side wall of the air outlet plate and the return air plate. The guide rail hanging plate is fixed on the side wall of the closed container, and the guide rail hanging plate realizes sliding on the fixed guide rail by moving the guide rail.
A method for freezing and thawing meat by using the freezing and thawing integrated cabinet according to any one of claims 1 to 8, the method comprising the following steps in order:

(1) Use fresh tools to squeeze the fresh meat to the same thickness as the sealed container, place it flat in the sealed container, close the lid of the sealed container, and push the sealed container into the freezer of the integrated cabinet. , Close the insulation door of the freezer;

(2) Turn on the power of the freezer of the integrated cabinet, and the cold air generating device located at the lower part of the freezer starts to work. The cold air generated by the first refrigeration unit and the first evaporator is circulated in the independent cold air circulation path of the freezer through the first forced convection fan. , Control the temperature of the cold air passing through the surface of the closed container and the thermally conductive rocker to be kept at -8 ° C to -6 ° C, so that the meat is frozen;

(3) Turn on the power of the defrosting chamber of the integrated cabinet, and the hot and cold air current generating device located at the lower part of the defrosting chamber starts to work. The cold air generated by the second refrigeration unit and the second evaporator or the hot air generated by the electric heater is passed through the second forced convection fan. Circulate in the independent hot and cold air circulation loop of the defrosting chamber. When the temperature displayed on the control panel of the defrosting chamber is below 6 ° C and above 1 ° C, open the insulation doors of the freezing and thawing chambers. The meat will be filled and frozen. Take out the closed container, quickly push it into the insulation room, and close the insulation doors of the freezing room and the insulation room;

(4) The hot and cold air flow in a certain temperature range passes through the air outlet holes of the air outlet plate of the thawing chamber, and performs heat exchange with the surface of the closed container and the thermal conductive rocker, and then returns to the hot air flow through the air return holes of the air return plate The device performs heating or cooling. When the temperature displayed on the control panel of the defrosting chamber is maintained at a constant interval of 1-6 ° C for 20-30 minutes, the defrosting process is ended and the meat is removed.
The method for freezing and thawing meat according to claim 9, characterized in that the temperature of the cold air in the freezing chamber and the temperature of the hot and cold air in the thawing chamber are controlled by a corresponding temperature controller according to the corresponding air duct plate The temperature of the air outlet adjusts the air supply amount and air supply speed of the cold air generating device or the hot and cold air current generating device.