CN116210838A

CN116210838A - Thawing apparatus, thawing method, thawing apparatus, and storage medium

Info

Publication number: CN116210838A
Application number: CN202111466306.2A
Authority: CN
Inventors: 张龙; 李晶; 刘婧怡; 张川
Original assignee: Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
Current assignee: Foshan Shunde Midea Electrical Heating Appliances Manufacturing Co Ltd
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2023-06-06

Abstract

The application discloses thawing equipment, thawing method, device, storage medium, equipment includes: the heating assembly is used for heating food to be thawed in the thawing cavity of the thawing equipment; the air extraction assembly is used for extracting air in the thawing cavity, so that water vapor is formed in the thawing cavity in a negative pressure state after the ice on the surface of the food to be thawed is thawed, and the water vapor releases heat when the surface of the food to be thawed is condensed, so that the food to be thawed is heated and warmed; the control assembly is used for pumping out the air in the thawing cavity by utilizing the pumping assembly in the first stage so as to heat the food material to be thawed; and in a second stage after the first stage, heating the food material to be thawed by utilizing the heating assembly.

Description

Thawing apparatus, thawing method, thawing apparatus, and storage medium

Technical Field

The embodiment of the application relates to the technical field of household appliances, and relates to a thawing device, a thawing method, a thawing device and a storage medium.

Background

In the related art, a user often stores some foods in a refrigerator to ensure the shelf life of the foods and reduce the purchase times, and the foods are often required to be taken out in the air or thawed in water in advance before eating.

The thawing mode is characterized in that air or water is exchanged with food material at a low thawing speed, so that a series of quality losses are often caused, for example, the defects of microorganism propagation, air drying, oxidation, juice loss and the like occur on the surface of meat, and quick thawing is difficult to realize for frozen products with large volume or large quantity.

Disclosure of Invention

In view of this, the embodiments of the present application provide a thawing apparatus, thawing method, apparatus, and storage medium.

In a first aspect, embodiments of the present application provide a thawing apparatus, the apparatus comprising: the heating assembly is used for heating food to be thawed in the thawing cavity of the thawing equipment; the air extraction assembly is used for extracting air in the thawing cavity, so that water vapor is formed in the thawing cavity in a negative pressure state after the ice on the surface of the food to be thawed is thawed, and the water vapor releases heat when the surface of the food to be thawed is condensed, so that the food to be thawed is heated and warmed; the control assembly is used for pumping out the air in the thawing cavity by utilizing the pumping assembly in the first stage so as to heat the food material to be thawed; and in a second stage after the first stage, heating the food material to be thawed by utilizing the heating assembly.

In a second aspect, embodiments of the present application provide a thawing method, the method including: in the first stage, air in the thawing cavity is pumped out by utilizing an air pumping assembly, so that water vapor is formed in the thawing cavity in a negative pressure state after the ice on the surface of the food to be thawed is thawed, and the water vapor releases heat when the surface of the food to be thawed is condensed, so that the food to be thawed is heated and warmed; and in a second stage after the first stage, heating the food material to be thawed by utilizing the heating assembly.

In a third aspect, an embodiment of the present application provides a thawing apparatus, including: the air extraction module is used for extracting air in the defrosting cavity by utilizing the air extraction assembly in the first stage, so that defrosting water after ice on the surface of the food to be defrosted is melted in the defrosting cavity in a negative pressure state to form water vapor, and the water vapor releases heat when the surface of the food to be defrosted is condensed, so that the food to be defrosted is heated and warmed; and the heating module is used for heating the food to be thawed by utilizing the heating assembly in a second stage after the first stage.

In a fourth aspect, embodiments of the present application provide a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps in the thawing method described above.

In the embodiment of the application, the food material to be thawed is placed in a low-pressure environment, so that the juice flow rate loss of the food material is low, the tissue structure damage is small, and the texture performance and the taste of the food material can be maintained to the greatest extent; by heating the food material to be thawed, the thawing speed of the food material can be increased, and thus the user experience is improved.

Drawings

Fig. 1 is a schematic diagram of a composition structure of a thawing apparatus according to an embodiment of the present disclosure;

fig. 2 is a schematic diagram of the composition and structure of another defrosting apparatus according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a thawing apparatus according to an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of an isolation component according to an embodiment of the present disclosure;

fig. 5 is a schematic flow chart of a thawing method according to an embodiment of the present application;

fig. 6a is a schematic structural diagram of still another defrosting apparatus according to an embodiment of the present application;

fig. 6b is a schematic structural diagram of a thawing apparatus according to an embodiment of the present disclosure;

Fig. 7 is a schematic implementation flow chart of a method for adjusting temperature according to vacuum degree according to an embodiment of the present application;

fig. 8 is a schematic diagram of a composition structure of a thawing apparatus according to an embodiment of the present application.

Detailed Description

The technical solutions of the present application are further described in detail below with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of a defrosting apparatus according to an embodiment of the present application, and as shown in fig. 1, the apparatus 100 includes:

a heating assembly 101, configured to heat the food material to be thawed in the thawing chamber 102 of the thawing apparatus 100;

the food material to be thawed can be frozen food material, and the food material can be chicken, fish, meat and the like which are not subjected to heat treatment, and cooked food materials such as sauced beef, salted duck and the like after cooking; the food material to be thawed can be placed into a thawing cavity of thawing equipment for thawing; the thawing chamber may be a hermetically sealed space; the heating component can heat the thawing cavity, so that food materials to be thawed in the thawing cavity are maintained in a certain temperature range, and the heating component 101 is prevented from being excessively heated, so that the quality, nutrition and taste of the food materials are affected.

The air extraction assembly 103 is used for extracting air in the thawing cavity 102, so that thawing water after ice on the surface of the food to be thawed is thawed in the thawing cavity 102 in a negative pressure state to form water vapor, and the water vapor releases heat when the surface of the food to be thawed is condensed, so that the food to be thawed is heated and warmed;

The air extraction assembly can be a pump which can extract air in the defrosting cavity and enable the defrosting cavity to be in a negative pressure state; the thawing chamber being in a negative pressure state may refer to a state in which the gas pressure in the thawing chamber is lower than normal pressure (i.e., one atmosphere pressure in common).

A control assembly 104, configured to, in a first stage, draw out air in the thawing chamber 102 by using the air-drawing assembly 103, so as to heat the food material to be thawed; in a second stage after the first stage, the food material to be thawed is subjected to heat treatment by the heating unit 101.

Wherein, the control component can be a control chip of the thawing equipment; the principle of vacuum thawing is that the evaporation rate of water under low pressure (namely, a negative pressure state) is faster than that under normal pressure, water vapor generated by water evaporation or boiling condenses to form water drops on the surface of the food to be thawed when meeting lower temperature, a large amount of latent heat of condensation is released in the process, and the food to be thawed is heated and warmed up so as to realize thawing, therefore, the thawing cavity can be in a negative pressure state by utilizing the air extraction component, the thawing water of the food to be thawed is evaporated or boiled under low pressure to generate water vapor, the water vapor condenses to form the water drops on the surface of the food to be thawed, and the heat released in the condensation process heats the food to be thawed; and then the heating assembly is used for heating the food material to be thawed, so that the ice crystal thawing speed of the food material is increased, and the thawing efficiency is improved.

It should be noted that in other embodiments, the working time of the air extraction assembly and the heating assembly may not be limited, that is, the air extraction assembly and the heating assembly may work simultaneously, and may be in a continuous operation state or may be in an intermittent operation state.

Fig. 2 is a schematic structural diagram of another defrosting apparatus according to an embodiment of the present application, and as shown in fig. 2, the apparatus 200 includes:

a heating unit 201 for heating the food 207 to be thawed in the thawing chamber 202 of the thawing apparatus 200;

wherein the heating assembly may comprise at least one of: a hot plate, a heating belt, an electromagnetic induction heater (Induction Heating, IH), a resistance wire, an infrared heater and a water bath heater; the thawing chamber 202 needs to have a sealing property to avoid air leakage.

Referring to fig. 2, the heating assembly 201 may be a heating assembly located below the defrosting chamber 202;

The air extraction assembly 203 is configured to extract air in the thawing chamber 202, so that water vapor is formed in the thawing chamber 202 in a negative pressure state by thawing water after ice on the surface of the food to be thawed is thawed, and the water vapor releases heat when the surface of the food to be thawed is condensed, so that the food to be thawed is heated and warmed;

wherein the suction assembly 203 may comprise a suction component and a separation component; the separation component is used for preventing water vapor from entering the air extraction component in the air extraction process of the air extraction component, so that the service life of the air extraction component is reduced; the pumping means may comprise at least one of: air pump, water pump and vacuum pump.

The negative pressure state may also be referred to as a vacuum state; the vacuum gauge is needed for measuring the pressure in the negative pressure state, the numerical value read from the vacuum gauge is called vacuum degree, the vacuum degree is equal to the atmospheric pressure minus absolute pressure, and the greater the vacuum degree is, the thinner the air is; the vacuum in the defrosting chamber 202 is equal to the atmospheric pressure minus the pressure in the defrosting chamber 202.

A pressure sensing assembly 204 for monitoring the pressure within the defrosting chamber;

wherein, the pressure sensing component 204 can be a pressure sensor, and can monitor the pressure change in the defrosting chamber 202 in real time.

A temperature sensing assembly 205 for monitoring the temperature within the thawing chamber;

wherein, the temperature sensing component 205 can be a temperature sensor, and can monitor the temperature change in the thawing chamber 202 in real time.

A control component 206, configured to perform a heating process on the food to be thawed by using the heating component 201 in a third stage before the first stage, so that the speed of melting ice on the surface of the food to be thawed into water is increased; in the first stage, the air in the thawing cavity 202 is pumped out by the air pumping assembly 203 so as to heat and raise the temperature of the food material to be thawed; in the second stage, the food material to be thawed is subjected to a heating process by the heating assembly 201.

The control assembly 206 is further configured to monitor the pressure within the defrosting chamber 202 using the pressure sensing assembly 204 during the first phase; depending on the pressure, the pumping assembly 203 is activated or deactivated.

The pressure sensing component 204 may feed back the monitored pressure to the control component 206, and the control component 206 starts or stops running the air extraction component 203 according to the pressure, where the control component 206 may start the air extraction component 203 under the condition that the pressure is normal pressure, and the control component 206 may stop running the air extraction component 203 under the condition that the vacuum degree in the thawing cavity is equal to 60 kpa.

The control component 206 is further configured to monitor, in the second stage, a temperature in the thawing chamber using the temperature sensing component 205; determining a target temperature of the defrosting chamber 202 based on the pressure; the operating state of the heating assembly 201 is controlled based on the target temperature and the temperature monitored by the temperature sensing assembly 205.

Wherein, the working state of the heating assembly 201 may include heating and stopping heating, and the vacuum degree in the defrosting cavity 202 may be determined according to the pressure in the defrosting cavity 202, and further the target temperature in the defrosting cavity 202 may be determined according to the vacuum degree, for example, in the case that the vacuum degree is 20 kpa, the target temperature may be determined to be 45 ℃; in the case of a vacuum of 60 kpa, the target temperature may be determined to be 20 degrees celsius.

In one embodiment, 200 g (unit: g) pork pieces with initial temperature of minus 18 ℃ can be compared in different thawing modes, and thawing is judged to be completed when the center temperature of the frozen pork reaches 0-4 ℃, the indoor temperature is 16-18 ℃, the humidity is 45%, and the experimental results are shown in the following table 1:

TABLE 1

As can be seen from the data in table 1, the natural thawing time is longest; the maximum juice loss rate caused by soaking and thawing is probably that the food material is soaked in water, the moisture migration is fast, and the surface of the food material is whitened; in the vacuum thawing method, the lower the thawing pressure and the lower the temperature, the smaller the loss rate of juice after thawing the food material. The hardness and elasticity can feed back the masticatory degree of the food material, and when the hardness and elasticity are high, the masticatory property of the food material is high.

Under the condition that the thawing temperature is higher, the thawing rate is higher, but the thawing loss and the steaming loss of meat quality are increased by the excessively high temperature, and simultaneously the texture is reduced, so that different vacuum thawing modes can be selected according to thawing requirements, time, pursuing of food quality and the like, the speed is improved, and meanwhile, the taste of food is improved.

Referring to Table 1, under the environment that the pressure in the container is-60 kilopascals (unit: kpa) and the temperature is 20 ℃, the thawing time of pork blocks can be increased from 138 minutes to 54 minutes when the pork blocks are naturally thawed, and the thawing rate is greatly increased.

The control component 206 controls the working state of the heating component 201 to heat when the temperature monitored by the temperature sensing component 205 is less than the target temperature, so that the heating is stopped after the temperature reaches the target temperature; in the case that the temperature detected by the temperature sensing assembly 205 is greater than or equal to the target temperature, the operating state of the heating assembly 201 is controlled to stop heating so that the temperature is reduced or maintained at the target temperature.

It should be noted that, the heating process of the heating assembly 201 may cause a pressure change in the defrosting cavity 202, so the air extraction assembly 203 needs to work in time to maintain the vacuum degree in the defrosting cavity 202 within the recommended parameters, and the air extraction assembly 203 may be continuously operated or intermittently operated; the heating assembly 201 is operated according to the air-extracting performance of the air-extracting assembly 203 and the vacuum degree in the thawing chamber 202, and maintains the temperature of the thawing chamber 202 or the food to be thawed within a corresponding range.

In the embodiment of the application, the heating component can be at least one of a hot plate, a heating belt and the like, so that the diversity of the heating component selection is improved; the air extraction component comprises a separation component, and during the air extraction process of the air extraction component, water vapor can be prevented from entering the air extraction component, so that the service life of the air extraction component is shortened; the thawing speed can be further improved by heating the food material to be thawed before air extraction; the pressure sensing assembly is used for monitoring the pressure, and the air extraction assembly is started and stopped according to the pressure, so that the pressure in the defrosting cavity can be controlled more accurately; through utilizing temperature sensing subassembly monitoring temperature, and then can contrast the target temperature that temperature and pressure correspond, control heating element's operating condition to can control the temperature in the chamber that unfreezes more accurately, prevent that heating element from heating excessively, influence food quality, nutrition and taste.

Fig. 3 is a schematic structural diagram of another defrosting apparatus according to an embodiment of the present application, and as shown in fig. 3, the apparatus 300 includes:

a heating assembly 301, configured to heat a food material 308 to be thawed in a thawing chamber 302 of the thawing apparatus;

The heating component 301 may also be a heating component located on a side wall of the thawing chamber 302, and it should be noted that the heating component 301 may also be located at the top, bottom, etc. of the thawing chamber 302; in some embodiments, the heating assembly 301 may also be located in the middle of the defrosting chamber 302, for example, may be suspended from a central location of the defrosting chamber 302.

The air extraction assembly 303 is configured to extract air in the thawing chamber 302, so that thawed water after ice on the surface of the food material to be thawed is evaporated or boiled in the thawing chamber 302 in a negative pressure state to form water vapor, and the water vapor releases heat when the surface of the food material to be thawed condenses, so that the food material to be thawed is heated and warmed;

a pressure sensing assembly 304 for monitoring the pressure within the defrosting chamber 302;

a temperature sensing assembly 305 for monitoring the temperature within the thawing chamber 302;

wherein the stopping and starting of the heating assembly 301 is affected by the temperature monitored by the temperature sensing assembly 305, so that the temperature in the thawing chamber 302 fluctuates within a set range.

Placing an isolation assembly 306 of the food material to be thawed, for allowing the thawed water to penetrate the isolation assembly 306 to reach the bottom of the thawing chamber 302, so that the thawed water and the food material to be thawed are separated;

Wherein, the isolation component 306 may be an aperture structure 401 as shown in fig. 4, so that the thawing water can reach the bottom of the thawing chamber 302 through the holes 402 of the aperture structure 401. The bottom of defrosting cavity 302 is dripped to defrosting water, can produce steam under heating assembly 301's heating, can provide humidity for waiting to defrost food to a certain extent, and the surface that wait to defrost food forms the water film and can separate oxygen, reduces the surface drying of waiting to defrost food simultaneously, increases the water retention.

A control component 307, configured to, in a first stage, utilize the air extraction component 303 to extract air in the thawing chamber 302, so as to heat the food material to be thawed; in the second stage, the food material to be thawed is subjected to heating treatment by the heating assembly 301;

the control assembly 307 is further configured to activate or deactivate the pumping assembly 303 in response to the pressure during the first stage.

The control assembly 307 is further configured to determine, in the second stage, a target temperature of the thawing chamber 302 according to the pressure; controlling the working state of the heating component 301 according to the target temperature and the temperature monitored by the temperature sensing component 305;

The control assembly 307 is further configured to control, by using the isolation assembly 306, the thawing water to reach the bottom of the thawing chamber 302 through the isolation assembly 306, so that the thawing water and the food to be thawed are separated.

In the embodiment of the application, the heating component can be arranged below the defrosting cavity, and can also be arranged on the inner wall or the middle part of the defrosting cavity, so that the flexibility of the heating component is improved; the thawing water and the food materials to be thawed are separated through the isolation assembly, so that the food materials can be prevented from being soaked by water accumulation, and the sensory quality is prevented from being influenced; in addition, the bottom of defrosting water droplet defrosting chamber, under heating assembly's heating, can produce steam, can provide humidity for waiting to unfreezing food to a certain extent, wait to unfreeze the surface of food and form the water film and can separate oxygen, reduce simultaneously and wait to unfreeze the surface drying of food, increase water retention.

Fig. 5 is a flow chart of a thawing method according to an embodiment of the present application, as shown in fig. 5, where the method includes:

step 502: in the first stage, air in the thawing cavity is pumped out by utilizing an air pumping assembly, so that water vapor is formed in the thawing cavity in a negative pressure state after the ice on the surface of the food to be thawed is thawed, and the water vapor releases heat when the surface of the food to be thawed is condensed, so that the food to be thawed is heated and warmed;

Step 504: and in a second stage after the first stage, heating the food material to be thawed by utilizing the heating assembly.

The embodiment of the application further provides a thawing method, which comprises the following steps:

step S512: in a third stage before the first stage, heating the food to be thawed in the thawing cavity of the thawing equipment by using a heating assembly, so that the speed of melting ice on the surface of the food to be thawed into water is increased;

step S514: in the first stage, air in the thawing cavity is pumped out by utilizing an air pumping assembly, so that thawing water after ice on the surface of the food material to be thawed is evaporated or boiled in the thawing cavity in a negative pressure state to form water vapor, and the water vapor releases heat when the surface of the food material to be thawed is condensed, so that the food material to be thawed is heated and warmed;

Step S516: monitoring the pressure within the defrosting chamber with a pressure sensing assembly during the first stage; starting or closing the air extraction assembly according to the pressure;

step S518: monitoring the temperature within the thawing chamber with a temperature sensing assembly during the second stage; determining a target temperature of the defrosting cavity according to the pressure; controlling the working state of the heating component according to the target temperature and the temperature monitored by the temperature sensing component;

step S520: and in the second stage, heating the food material to be thawed by utilizing the heating assembly.

In the embodiment of the application, the food material to be thawed is heated before air extraction, so that the thawing speed can be further improved; the pressure sensing assembly is used for monitoring the pressure, and the air extraction assembly is started and stopped according to the pressure, so that the pressure in the defrosting cavity can be controlled more accurately; through utilizing temperature sensing subassembly monitoring temperature, and then can contrast the target temperature that temperature and pressure correspond, control heating element's operating condition to can control the temperature in the chamber that unfreezes more accurately, prevent that heating element from heating excessively, influence food quality, nutrition and taste.

step S612: in the first stage, air in the thawing cavity is pumped out by utilizing an air pumping assembly, so that thawing water after ice on the surface of the food material to be thawed is evaporated or boiled in the thawing cavity in a negative pressure state to form water vapor, and the water vapor releases heat when the surface of the food material to be thawed is condensed, so that the food material to be thawed is heated and warmed;

step S614: controlling the thawing water to reach the bottom of the thawing cavity through the isolation assembly by utilizing the isolation assembly for placing the food material to be thawed, so that the thawing water and the food material to be thawed are separated;

step S616: monitoring the pressure within the defrosting chamber with a pressure sensing assembly during the first stage; starting or closing the air extraction assembly according to the pressure;

step S618: monitoring the temperature within the thawing chamber with a temperature sensing assembly during the second stage; determining a target temperature of the defrosting cavity according to the pressure; controlling the working state of the heating component according to the target temperature and the temperature monitored by the temperature sensing component;

Step S620: and in the second stage, heating the food material to be thawed by utilizing the heating assembly.

In the embodiment of the application, the thawing water and the food material to be thawed are separated through the isolation assembly, so that the phenomenon that the food material is soaked in water and the sensory quality is affected can be prevented; in addition, the bottom of defrosting water droplet defrosting chamber, under heating assembly's heating, can produce steam, can provide humidity for waiting to unfreezing food to a certain extent, wait to unfreeze the surface of food and form the water film and can separate oxygen, reduce simultaneously and wait to unfreeze the surface drying of food, increase water retention.

In life, users often store some foods in the refrigerator in a freezing way so as to ensure the shelf life of the foods and reduce the purchasing times. Before eating, food is usually taken out in air or in water in advance for thawing, the thawing mode is exchanged with food material temperature through air or water, thawing speed is low, a series of quality losses are often caused, such as propagation of microorganisms, air drying, oxidation, juice loss and the like on the surface of meat, and quick thawing is difficult to realize for frozen products with large volume or large quantity.

The vacuum thawing has the advantages of uniform thawing effect, low thawing temperature, high thawing speed and the like, can not cause the surface or local temperature of frozen products to be too high, can be applied to heat-sensitive foods, has reduced enzyme activity when the foods are thawed under the vacuum condition, is not easy to generate oxidative denaturation and is not easy to generate spoilage caused by harmful bacteria. The thawing rate of the method is about 2 to 3 times higher than that of an air thawing method, oxidization is not easy to occur, and the liquid loss is small and the quality loss is low due to the fact that steam condensation exists on the surface of a frozen product. But vacuum thawing alone may result in slow thawing rates.

According to the embodiment of the application, from the vacuum angle, the heating auxiliary means are overlapped, and the vacuum thawing device is designed, so that the thawing speed is improved, and the user experience is improved.

Fig. 6a is a schematic structural diagram of still another defrosting apparatus according to an embodiment of the present application, as shown in fig. 6a, including: an air extractor 601, a heating device 602, a vessel 603, a pressure sensor 605, a temperature sensor 606, and a diaphragm 607;

the air extracting device (i.e. air extracting component) 601 is used for extracting air in the container (i.e. defrosting cavity), so that the container is in a negative pressure state, the negative pressure is a gas pressure state lower than normal pressure (i.e. one atmosphere), the air extracting device can be an air pump, a water pump, a vacuum pump and other air extracting devices, the air extracting device can comprise a water-steam separation device, and the air extracting device is prevented from reducing the service life of the device when water steam enters the device in the air extracting process.

Heating means (i.e., heating assembly) 602, which may be placed on the inner wall of the container to heat the container to maintain the food at a certain temperature, the heating mode is not limited, and may be a hot plate, IH (induction heating ), a heating belt, a resistance wire, infrared, or even water bath heating; the heating device can also be placed below the partition 607 to directly heat the food material.

Container 603: the sealing performance is needed to avoid air leakage.

The food 604 may be frozen food, food material, chicken, fish, meat, etc. without heat treatment, or cooked food such as beef with soy sauce, salted duck, etc.

Pressure sensor (i.e., pressure sensing assembly) 605: the pressure change in the container can be monitored, and timely fed back to a control component (not shown in the figure), the control component informs the air extractor whether to start or stop running according to the pressure change, and meanwhile, the pressure change is fed back to the temperature sensor and the heating device, so that the temperature in the container is controlled.

The temperature sensor (i.e. temperature sensing component) 606 can be used for monitoring the temperature in the container, so as to prevent the heating device from overheating and affecting the quality, nutrition and taste of the food.

The partition plate (i.e. the isolation component) 607 can separate the food material from the bottom of the container, so that the liquefied water can be separated from the food material in time when thawing, and the shape of the partition plate is not limited, and the partition plate can be used for placing a steaming rack and a steaming basket.

It should be noted that, as shown in fig. 4, the surface of the partition 607 may be configured with a pore structure, so as to facilitate separation of the thawed water from the food material.

In one embodiment, the food to be thawed is placed in the container, the air extractor is started, the food can be heated at different temperatures according to the negative pressure in the container, the thawing rate can be improved, and accordingly different negative pressures and temperatures can be designed according to the product performance to defrost. In the thawing process, ice crystals in the food materials are continuously melted under two conditions of vacuum and temperature, and can drip to the bottom of the container through the aperture of the partition 607 so as to separate water from the food materials, thereby preventing the food materials from being soaked by the water and influencing the sensory quality; in addition, the defrosting water drops to the bottom of the container, and under the heating condition of the heating device, water vapor is generated, so that humidity can be provided for food to a certain extent, a water film is formed on the surface of the food to block oxygen, and meanwhile, surface drying is reduced, and water holding capacity is increased.

The heating device is started to increase the temperature inside the container, so that the surface temperature of the food can be increased, the ice crystal melting speed of the food can be increased, and meanwhile, the heating device is stopped to be influenced by the temperature sensor 606, and the temperature is fluctuated within a set temperature range. The heating mode is not limited, and can be a hot plate, IH, a heating belt, a resistance wire, infrared, even water bath heating and the like, and the position is also not limited, and can be the bottom, the middle and the upper part of the container. Alternatively, the bottom of the partition plate may be heated by a semiconductor, so as to raise the temperature of the food material.

Fig. 6b is a schematic structural diagram of still another defrosting apparatus according to an embodiment of the present application, as shown in fig. 6b, where the defrosting apparatus includes: the defrosting apparatus shown in fig. 6b, which is provided with the air extraction assembly 601, the heating assembly 602, the container 603, the pressure sensing assembly 605 and the temperature sensing assembly 606, is provided with the same components as the defrosting apparatus shown in fig. 6a, except that the partition is omitted, the food 604 is directly placed at the bottom of the container, and the heating device can be placed on the inner wall or below the container.

In one embodiment, the heating process may cause a pressure change in the interior of the container, and at this time, the air extractor needs to operate in time, so that the vacuum degree in the interior of the container is maintained within the recommended parameter range, and the air extractor may operate continuously or intermittently.

The heating device can work according to the air extraction performance and the vacuum degree characteristic of the interior of the container, and the temperature of the interior of the container or food materials is maintained in a corresponding range.

Fig. 7 is a schematic implementation flow chart of a method for adjusting temperature according to vacuum degree according to an embodiment of the present application, as shown in fig. 7, the method includes the following steps:

step 702: placing food materials into the container;

step 704: adjusting the vacuum degree P of the container;

step 706: judging whether the vacuum degree of the container is more than 30kpa; if yes, go to step 708; if not, go to step 710;

step 708: maintaining the temperature inside the container at less than or equal to 30 degrees celsius;

step 710: the internal temperature of the container is maintained between 30 degrees celsius and 60 degrees celsius.

When the vacuum degree is 30kPa or less (i.e., the pressure in the container is greater than or equal to-30 kPa), the negative pressure has little influence on the surface and the internal water of the food, but the thawing quality of the food is improved in comparison with the thawing in the air, and at this time, the container can be heated to increase the thawing speed, and the temperature in the container can be maintained at 30 to 60 ℃, so that the surface temperature of the food can be rapidly increased under the conditions of the thawing temperature and the vacuum degree, but the thawing temperature and the vacuum degree are not reduced in the condition of the denaturation of the food and the quality because the denaturation temperature of the protein is substantially 60 ℃ or more, and the thawing rate can be improved.

When the vacuum degree is above 30kPa (i.e. the pressure in the container is less than-30 kPa), the vaporization of moisture may be more advantageous due to the higher vacuum degree in the container, the bottom heating temperature may be below 60 ℃, especially below 30 ℃ is more recommended, wherein the higher the vacuum degree, the lower the heating temperature may be. The temperature is maintained at 30-60 ℃, the food can be quickly thawed, the surface of the food can be more in water quantity under the condition of the thawing temperature, the cells in the food are partially destroyed, but the quality of the food is less degraded; the vacuum degree can be improved when the temperature is kept below 30 ℃, the ice water in the food material is not changed too severely like low-temperature vacuum thawing, the damage of the ice crystal to the cell tissue of the food material caused by severe thawing can be avoided, the quality, the flavor, the appearance, the water holding capacity and the like of the food material are maintained, the thawing effect is good, and the thawing speed is high.

The principle of vacuum thawing is that water vapor generated by evaporation or boiling of water under low pressure is condensed into water drops on the surface of a frozen product at lower temperature, a large amount of latent heat of condensation is released in the process, and the frozen product is heated to rise temperature so as to realize thawing. However, the absolute vacuum condition is harsh, the cost is high, the equipment performance requirement is high, so that partial heat can be provided externally, water can be evaporated or boiled more quickly under the low pressure condition, and the thawing speed is improved. For poor vacuum equipment or less strict product tightness, the vacuum degree can be selected to be 30kPa; the vacuum equipment with better performance can select a larger vacuum degree. In the embodiment of the application, the thawing speed is improved by matching vacuum conditions with certain temperature control, and meanwhile, the taste and quality of food materials are improved.

Based on the foregoing embodiments, the embodiments of the present application provide a thawing device, which includes units included, and modules included in the units, and may be implemented by the thawing device; of course, the method can also be realized by a specific logic circuit; in an implementation, the processor may be a Central Processing Unit (CPU), a Microprocessor (MPU), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), or the like.

Fig. 8 is a schematic structural diagram of a defrosting device according to an embodiment of the present application, as shown in fig. 8, the defrosting device 800 includes an air extraction module 801 and a heating module 802, where:

the air extraction module 801 is configured to extract air in the thawing cavity by using an air extraction assembly in a first stage, so that thawed water after ice on the surface of the food to be thawed is thawed in the thawing cavity under a negative pressure state to form water vapor, and the water vapor releases heat when the surface of the food to be thawed is condensed, so that the food to be thawed is heated and warmed;

and the heating module 802 is configured to perform a heating process on the food material to be thawed by using the heating assembly in a second stage after the first stage.

In one embodiment, the apparatus further comprises: and the preheating module is used for heating the food to be thawed in the thawing cavity of the thawing equipment by utilizing the heating assembly in the third stage before the first stage, so that the speed of melting ice on the surface of the food to be thawed into water is increased.

In one embodiment, the apparatus further comprises: a first monitoring module for monitoring the pressure in the thawing chamber with a pressure sensing assembly during the first phase; and the first control module is used for starting or closing the air extraction assembly according to the pressure.

In one embodiment, the apparatus further comprises: the second monitoring module is used for monitoring the temperature in the defrosting cavity by utilizing a temperature sensing assembly in the second stage; a determining module for determining a target temperature of the thawing chamber based on the pressure; and the second control module is used for controlling the working state of the heating component according to the target temperature and the temperature monitored by the temperature sensing component.

In one embodiment, the apparatus further comprises: and the third control module is used for controlling the thawing water to penetrate through the isolation assembly to reach the bottom of the thawing cavity by utilizing the isolation assembly for placing the food material to be thawed, so that the thawing water and the food material to be thawed are separated.

The description of the apparatus embodiments above is similar to that of the method embodiments above, with similar advantageous effects as the method embodiments. For technical details not disclosed in the device embodiments of the present application, please refer to the description of the method embodiments of the present application for understanding.

In the embodiment of the present application, if the thawing method is implemented in the form of a software functional module and sold or used as a separate product, the thawing method may also be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be embodied essentially or in a part contributing to the related art in the form of a software product stored in a storage medium, including several instructions for causing the thawing device to perform all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read Only Memory (ROM), a magnetic disk, an optical disk, or other various media capable of storing program codes. Thus, embodiments of the present application are not limited to any specific combination of hardware and software.

Accordingly, embodiments of the present application provide a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the thawing method provided in the above embodiments.

It should be noted here that: the description of the storage medium and apparatus embodiments above is similar to that of the method embodiments described above, with similar benefits as the method embodiments. For technical details not disclosed in the embodiments of the storage medium and the apparatus of the present application, please refer to the description of the method embodiments of the present application for understanding.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application. The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above described device embodiments are only illustrative, e.g. the division of the units is only one logical function division, and there may be other divisions in practice, such as: multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. In addition, the various components shown or discussed may be coupled or directly coupled or communicatively coupled to each other via some interface, whether indirectly coupled or communicatively coupled to devices or units, whether electrically, mechanically, or otherwise.

The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units; can be located in one place or distributed to a plurality of network units; some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may be separately used as one unit, or two or more units may be integrated in one unit; the integrated units may be implemented in hardware or in hardware plus software functional units.

Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the above method embodiments may be implemented by hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, where the program, when executed, performs steps including the above method embodiments; and the aforementioned storage medium includes: a mobile storage device, a Read Only Memory (ROM), a magnetic disk or an optical disk, or the like, which can store program codes. Alternatively, the integrated units described above may be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product. Based on such understanding, the technical solutions of the embodiments of the present application may be embodied essentially or in a part contributing to the related art in the form of a software product stored in a storage medium, including several instructions for causing the thawing device to perform all or part of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a removable storage device, a ROM, a magnetic disk, or an optical disk.

The methods disclosed in the several method embodiments provided in the present application may be arbitrarily combined without collision to obtain a new method embodiment. The features disclosed in the several product embodiments provided in the present application may be combined arbitrarily without conflict to obtain new product embodiments. The features disclosed in the several method or apparatus embodiments provided in the present application may be arbitrarily combined without conflict to obtain new method embodiments or apparatus embodiments.

The foregoing is merely an embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A defrosting apparatus, characterized in that the apparatus comprises:

the heating assembly is used for heating food to be thawed in the thawing cavity of the thawing equipment;

the air extraction assembly is used for extracting air in the thawing cavity, so that water vapor is formed in the thawing cavity in a negative pressure state after the ice on the surface of the food to be thawed is thawed, and the water vapor releases heat when the surface of the food to be thawed is condensed, so that the food to be thawed is heated and warmed;

The control assembly is used for pumping out the air in the thawing cavity by utilizing the pumping assembly in the first stage so as to heat the food material to be thawed; and in a second stage after the first stage, heating the food material to be thawed by utilizing the heating assembly.

2. The apparatus of claim 1, wherein the device comprises a plurality of sensors,

the control assembly is further used for heating the food to be thawed by utilizing the heating assembly in a third stage before the first stage, so that the speed of melting ice on the surface of the food to be thawed into water is increased.

3. The apparatus of claim 1, wherein the apparatus further comprises:

a pressure sensing assembly for monitoring the pressure within the defrosting chamber;

the control assembly is further used for monitoring the pressure in the defrosting cavity by utilizing the pressure sensing assembly in the first stage; and starting or closing the air extraction assembly according to the pressure.

4. A device according to claim 3, characterized in that the device further comprises:

the temperature sensing assembly is used for monitoring the temperature in the defrosting cavity;

the control assembly is further used for monitoring the temperature in the thawing cavity by utilizing the temperature sensing assembly in the second stage; determining a target temperature of the defrosting cavity according to the pressure; and controlling the working state of the heating component according to the target temperature and the temperature monitored by the temperature sensing component.

5. The apparatus according to any one of claims 1 to 4, further comprising:

placing an isolation assembly of the food material to be thawed, wherein the isolation assembly is used for enabling the thawing water to reach the bottom of the thawing cavity through the isolation assembly so as to separate the thawing water from the food material to be thawed;

the control assembly is further used for controlling the defrosting water to penetrate through the isolation assembly to reach the bottom of the defrosting cavity by utilizing the isolation assembly, so that the defrosting water and the food to be defrosted are separated.

6. The apparatus of any one of claims 1 to 4, wherein the suction assembly comprises a suction component and a separation component; the separation component is used for preventing water vapor from entering the air extraction component in the air extraction process of the air extraction component;

the air extraction component comprises at least one of the following: air pump, water pump and vacuum pump.

7. A thawing method, applied to a thawing apparatus, comprising:

in the first stage, air in the thawing cavity is pumped out by utilizing an air pumping assembly, so that water vapor is formed in the thawing cavity in a negative pressure state after the ice on the surface of the food to be thawed is thawed, and the water vapor releases heat when the surface of the food to be thawed is condensed, so that the food to be thawed is heated and warmed;

And in a second stage after the first stage, heating the food material to be thawed by utilizing the heating assembly.

8. The method of claim 7, wherein the method further comprises:

and in a third stage before the first stage, heating the food to be thawed in the thawing cavity of the thawing equipment by using a heating assembly, so that the speed of melting ice on the surface of the food to be thawed into water is increased.

9. The method according to claim 7 or 8, characterized in that the method further comprises:

monitoring the pressure within the defrosting chamber with a pressure sensing assembly during the first stage;

and starting or closing the air extraction assembly according to the pressure.

10. The method according to claim 9, wherein the method further comprises:

monitoring the temperature within the thawing chamber with a temperature sensing assembly during the second stage;

determining a target temperature of the defrosting cavity according to the pressure;

and controlling the working state of the heating component according to the target temperature and the temperature monitored by the temperature sensing component.

11. A defrosting apparatus, characterized in that the apparatus comprises:

The air extraction module is used for extracting air in the defrosting cavity by utilizing the air extraction assembly in the first stage, so that defrosting water after ice on the surface of the food to be defrosted is melted in the defrosting cavity in a negative pressure state to form water vapor, and the water vapor releases heat when the surface of the food to be defrosted is condensed, so that the food to be defrosted is heated and warmed;

and the heating module is used for heating the food to be thawed by utilizing the heating assembly in a second stage after the first stage.

12. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the thawing method as claimed in any of the claims 7 to 10.