CN110953832A

CN110953832A - Refrigerator instant freezing storage control method and refrigerator

Info

Publication number: CN110953832A
Application number: CN201911046527.7A
Authority: CN
Inventors: 钱梅双; 辛海亚; 梁起
Original assignee: Gree Electric Appliances Inc of Zhuhai; Hefei Jing Hong Electrical Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Hefei Jing Hong Electrical Co Ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-04-03

Abstract

According to the refrigerator instant freezing storage control method and the refrigerator, when a user selects an instant freezing function, the temperature of an instant freezing room is uniform through a sectional type supercooling cooling stage, in the last 1 stage of the supercooling cooling stage, the supercooling removing stage and the supercooling removing stage can be timely determined to enter through the judgment of the front and back temperature change difference value of the temperature of food, the rotating speed of a compressor is increased, the compressor is controlled to operate at 80% -100% of the maximum rotating speed M2 of the compressor, the flow of a capillary tube group is reduced, the capillary tube group is controlled to operate at a second preset flow V2, the rotating speed of a fan of a condenser is increased, the fan of the condenser is controlled to operate at 80% -100% of the maximum rotating speed S2 of the fan of the condenser, the refrigerator rapidly passes through an ice crystal belt, the supercooling removing effect can be prevented from being poor, supercooling can be better removed, and long.

Description

Refrigerator instant freezing storage control method and refrigerator

Technical Field

The invention relates to a refrigerating system instant freezing storage control method and a refrigerating system, in particular to a refrigerator instant freezing storage control method and a refrigerator.

Background

In order to better maintain the nutrition of frozen foods, a refrigeration system such as a refrigerator, an ice chest and the like usually adopts a common freezing mode, a quick freezing mode and other freezing modes to preserve the foods, and the traditional common freezing mode has the defects of uneven temperature control in a freezing chamber, long-time stay in a maximum ice crystal generation zone and the like; although the rapid freezing can rapidly pass through the maximum ice crystal generation zone, the production cost is high, and the rapid freezing is not beneficial to popularization and application in refrigerators. Some techniques also propose a supercooling preservation method, such as chinese patent literature: CN200780052223.0 discloses a refrigerator and a freezing storage method, wherein the supercooling release mode is released by increasing the wind speed or the wind volume.

The existing technology for supercooling preservation has the following disadvantages:

(1) the supercooling is released in advance due to uneven temperature reduction in the supercooling process, and the inside and the outside of the food cannot well enter a supercooling state.

(2) The supercooling relieving effect is not good, and the problem that the surface of the food is air-dried easily is caused by increasing the wind speed or the wind quantity.

(3) Because the cooling rate is high in the cooling process, the supercooling depth is shallow, and the user cannot well enter a supercooling state.

(4) When the food is in the supercooled state, the air distribution around the food is not uniform, resulting in early release of the supercooled state.

Disclosure of Invention

In view of the above, the present invention provides a method for controlling instant freezing storage of a refrigeration system (refrigerator) and a refrigeration system. The invention adopts a control method of cooling by stages for supercooling control, so that supercooling and cooling are uniform, the phenomenon that the supercooling depth is shallow and the food cannot well enter a supercooling state can be prevented, and the food can integrally and uniformly enter a deeper supercooling state. The supercooling release state of the food is determined by detecting the change value of the temperature of the food in real time, and the supercooling release control is timely started. In the stage of supercooling release control, the rotating speed of the compressor is increased, the compressor is controlled to operate at 80% -100% of the maximum rotating speed M2 of the compressor, the flow rate of the capillary group is reduced, the capillary group is controlled to operate at a second preset flow rate V2, the rotating speed of a fan of the condenser is increased, the fan of the condenser is controlled to operate at 80% -100% of the maximum rotating speed S2 of the fan of the condenser, and the refrigerant rapidly passes through an ice crystal belt, so that the poor supercooling release effect can be prevented, and supercooling can be better released.

Preferably, after the supercooling release, a conventional cryopreservation control is further included to maintain it at a specific temperature, so that foods such as meat can be easily cut.

Specifically, the method comprises the following steps:

a refrigerating system instant freezing storage control method comprises the following steps:

s01: the user selects the instant freezing function;

s02: carrying out staged supercooling and cooling on the instant freezing chamber, wherein the stages are respectively the 1 st stage … … nth stage, and n > is 2 and is a natural number;

s03, detecting the temperature of the food in the chamber in real time at the nth stage, recording the current temperature T0 and the temperature T0 ' before the first preset time T0, and executing the next step when the temperature difference △ T between T0 ' and T0 is less than the preset difference, wherein △ T is (T0 ' -T0);

s04: and (3) performing supercooling release, increasing the rotating speed of the compressor, controlling the compressor to run at 80% -100% of the maximum rotating speed M2 of the compressor, reducing the flow of the capillary group, controlling the capillary group to run at a second preset flow V2, controlling the condenser fan and the condenser fan of the condenser to run at 80% -100% of the maximum rotating speed S2, increasing the rotating speed of the condenser fan, controlling the condenser fan to run at 80% -100% of the maximum rotating speed S2 of the condenser fan, and setting the running time of the supercooling release as a first preset supercooling release time tj.

Preferably, step S05 is further included after step S04: and executing conventional refrigeration preservation control, and operating the control chamber according to a preset conventional temperature Tc, wherein Tc is more than or equal to-7 and less than 0 ℃.

Preferably, step S05 further includes: controlling the compressor to operate at a first preset compressor speed M1, controlling the capillary group to operate at a first preset flow rate V1, controlling the condenser fan to operate at a first preset condenser fan speed S1, detecting the real-time temperature of the compartment in real time, and detecting the real-time temperature of the compartment when the compartment temperature reaches a first preset condenser fan speed S1To the conventional starting temperature point T_ONcWhen the air door is opened, the air door of the compartment is opened; when the room temperature reaches a first shutdown temperature point T_OFFcWhen the door is closed, the air door of the compartment is closed; t is_ONc＝Tc+T_B1/2,T_OFFc＝T_ONc–T_B2/2, wherein, M1<M2，V1>V2，S1<S2，T_B1Indicates the floating temperature T of the starting point of the instantaneous freezing chamber in the starting process of the compressor_B2The temperature difference refers to the opening and closing temperature difference of the instant freezing chamber.

Preferably, 0 ℃ < T_B1≤2℃，0℃＜T_B2≤2℃。

Preferably, during the 1 st to nth phases, the compressor is controlled to operate at a first preset compressor speed M1, the capillary tube group is controlled to operate at a first preset flow rate V1, and the condenser fan is controlled to operate at a first preset condenser fan speed S1, wherein M1< M2, V1> V2, and S1< S2.

Preferably, n is 3, and in the first stage, the compartment is operated at a first preset temperature T1 for a first preset time T1;

in the second stage, the compartment is operated at a second preset temperature T2, and the operation time is a second preset time T2;

in a third phase, the compartment is operated at a third preset temperature T3, wherein T1< T2< T3.

Preferably, in the first stage, the real-time temperature of the compartment is detected in real time, and when the compartment temperature reaches the first starting temperature point T_ON1When the air door is opened, the air door of the compartment is opened; when the room temperature reaches a first shutdown temperature point T_OFF1Closing the air door of the instant freezing chamber; t is_ON1＝T1+T_B1/2,T_OFF1＝T_ON1–T_B2/2；

And/or, in the second stage, detecting the real-time temperature of the compartment in real time, and when the temperature of the compartment reaches the second starting temperature point T_ON2When the air door is opened, the air door of the compartment is opened; when the room temperature reaches a second shutdown temperature point T_OFF2Closing the air door of the instant freezing chamber; t is_ON2＝T2+T_B1/2,T_OFF2＝T_ON2–T_B2/2；

And/or, in a third phase, real-time detection of the compartmentsTemperature, when the room temperature reaches the third opening machine temperature point T_ON3When the air door is opened, the air door of the compartment is opened; when the room temperature reaches a second shutdown temperature point T_OFF3Closing the air door of the instant freezing chamber; t is_ON3＝T3+T_B1/2,T_OFF3＝T_ON3–T_B2/2；

Wherein, T_B1Indicates the floating temperature T of the starting point of the instantaneous freezing chamber in the starting process of the compressor_B2The temperature difference refers to the opening and closing temperature difference of the instant freezing chamber.

Preferably, T1 is more than or equal to 0 ℃ at 5 ℃, and/or T2 is more than or equal to 0 ℃ and less than or equal to 2 ℃, and/or T3 is more than or equal to-10 ℃ and less than or equal to 0 ℃, and/or T is more than 0 DEG C_B1At 2 ℃ or lower and/or at 0 ℃ or lower than T_B2At the temperature of less than or equal to 2 ℃, and/or t1 is more than 0 and less than or equal to 8 hours, and/or t2 is more than 0 and less than or equal to 8 hours.

Preferably, the means for detecting the temperature of the food in the compartment is to detect the surface temperature of the food using an infrared temperature sensor.

Preferably, the preset difference is 0.

In addition, the present invention provides a control system for a refrigeration system, comprising: the control system comprises a control unit, a compressor, a temperature sensor, a timer, an electric switching valve, a condenser fan, and is in control connection with the compressor, the temperature sensor, the timer, the electric switching valve and the condenser fan, and the control system is used for executing the control method.

The invention also provides a refrigerating system, which adopts the control method; or the refrigeration system is provided with the control system of the invention.

Preferably, the refrigeration system is a refrigerator.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings. The drawings described below are merely some embodiments of the present disclosure, and other drawings may be derived from those drawings by those of ordinary skill in the art without inventive effort.

FIG. 1 is a schematic diagram of a refrigeration system flash freeze storage control method of the present invention.

Figure 2 is one of the schematic diagrams of the operating principle of the refrigeration system of the present invention.

FIG. 3 is a second schematic diagram of the operation of the refrigeration system of the present invention

Fig. 4 is a schematic view of a refrigerator according to the present invention.

FIG. 5 is a schematic view of the instant freezer compartment of the present invention.

Fig. 6 is a schematic diagram of the control system for the refrigeration system of the present invention.

Wherein: 1-refrigerating chamber, 2-instant freezing chamber, 3-freezing chamber, 21-first temperature sensor, 22-second temperature sensor and 23-instant freezing functional zone;

10-an evaporator, 11-a first capillary tube, 12-a second capillary tube, 13-an electric switching valve, 14-a filter, 15-a compressor, 16-an air return tube assembly, 17-an air return heat exchange section, 18-a condenser and 19-an anti-condensation tube.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals denote the same or similar parts in the drawings, and thus, a repetitive description thereof will be omitted.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the subject matter of the present disclosure can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the disclosure.

The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.

The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.

It will be understood that, although the terms first, second, third, etc. may be used herein to describe various structures, these structures should not be limited by these terms. These terms are used to distinguish one structure from another structure. Thus, a first structure discussed below may be termed a second structure without departing from the teachings of the disclosed concept. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

It is to be understood by those skilled in the art that the drawings are merely schematic representations of exemplary embodiments, and that the blocks or processes shown in the drawings are not necessarily required to practice the present disclosure and are, therefore, not intended to limit the scope of the present disclosure.

The following detailed description of embodiments of the invention is provided in conjunction with the accompanying figures 1-6:

as shown in fig. 1, a method for controlling the instantaneous freezing storage of a refrigeration system includes the following steps:

s01: the user selects the instant freezing function;

s03, detecting the temperature of the food in the chamber in real time at the nth stage, recording the current temperature T0 and the temperature T0 'before the first preset time T0, calculating △ T ═ T0' -T0, and executing the next step when △ T is less than a preset difference value, such as 0;

s04: and (3) performing supercooling release, increasing the rotating speed of the compressor 15, controlling the compressor 15 to operate at 80% -100% of the maximum rotating speed M2 of the compressor 15, reducing the flow rate of the capillary group, controlling the capillary group to operate at a second preset flow rate V2, increasing the rotating speed of a fan of the condenser 18, controlling the fan of the condenser 18 to operate at 80% -100% of the maximum rotating speed S2 of the fan of the condenser 18, and setting the operating time of the supercooling release as a first preset supercooling release time tj.

The first preset supercooling release time is tj, and can be set within the range of 0 < tj ≦ 6h according to the type of food such as meat, the temperature of the food can rise to a freezing point accessory when the supercooling is released, namely the temperature of the food has a rising process, namely the supercooling release start can be judged through the temperature rise, namely △ T ═ T0' -T0, when △ T is less than the preset difference, the preset difference can be set to be 0, which indicates the supercooling release start, at the moment, the food is rapidly frozen through the rapid supercooling release, uniform and fine ice crystal particles are formed, and the freezing damage is favorably reduced.

The first preset time t0 is set according to: since supercooling release is instantaneously started, t0 is generally set to 1 to 2 minutes.

Preferably, step S05 is further included after step S04: and executing conventional refrigeration preservation control, and controlling the compartment to operate according to the preset conventional temperature Tc.

Preferably, step S05 further includes: controlling the compressor 15 to operate at a first preset compressor 15 rotation speed M1, controlling the capillary group to operate at a first preset flow rate V1, controlling the condenser 18 fan to operate at a first preset condenser 18 fan rotation speed S1, detecting the real-time temperature of the compartment in real time, and detecting the temperature of the compartment when the compartment reaches a normal starting temperature point T_ONcWhen the air door is opened, the air door of the compartment is opened; when the room temperature reaches a first shutdown temperature point T_OFFcWhen the door is closed, the air door of the compartment is closed; t is_ONc＝Tc+T_B1/2,T_OFFc＝T_ONc–T_B2/2。

Wherein M1< M2, V1> V2.

That is, in the conventional refrigeration preservation control, the temperature of the control chamber is kept at Tc + T_B1[ 2 ] and T_ONc–T_B2Between/2, i.e. it operates substantially at Tc temperature, T_B1，T_B2The present invention can be set between 0-2 c, which can be set empirically.

Preferably-7. ltoreq. Tc < 0 ℃ C. < T < 0 ℃ C_B1≤2℃，0℃＜T_B2≤2℃。

Wherein, the conventional refrigeration preservation control can facilitate the cutting of meat food by setting the compartment temperature to be-7-Tc less than 0 ℃, even if the meat food is easy to cut, the effect of making dishes is facilitated.

Preferably, during the 1 st to nth phases, the compressor 15 is controlled to operate at a first preset compressor 15 speed M1, the capillary tube bank is controlled to operate at a first preset flow rate V1, and the condenser 18 fan is controlled to operate at a first preset condenser 18 fan speed S1.

And/or, in the third stage, detecting the real-time temperature of the compartment in real time, and when the temperature of the compartment reaches the temperature point T of the third opening machine_ON3When the air door is opened, the air door of the compartment is opened; when the room temperature reaches a second shutdown temperature point T_OFF3Closing the air door of the instant freezing chamber; t is_ON3＝T3+T_B1/2,T_OFF3＝T_ON3–T_B2/2。

Wherein, the values of the first preset temperature T1, the second preset temperature T2 and the third preset temperature T3 can be specifically set according to the types of food materials, preferably, the temperature is more than or equal to 5 ℃ and more than or equal to T1 and more than 0 ℃, and/or the temperature is more than or equal to 0 ℃ and more than or equal to 0 and less than or equal to T2 and more than or equal to 2 ℃, and/or the temperature is more than or equal to-10 and more than or equal to T3 and less than or equal to 0 ℃_B1At 2 ℃ or lower and/or at 0 ℃ or lower than T_B2At the temperature of less than or equal to 2 ℃, and/or t1 is more than 0 and less than or equal to 8 hours, and/or t2 is more than 0 and less than or equal to 8 hours. In the first stage, the temperature is first reduced to 0-5 ℃, the operation time is the first preset time t1, t1 can be specifically set according to the actual situation, such as the food, the type and the size, as long as the temperature is uniform, or a larger value, such as 6h for t1, so that most of the food can reach the uniform temperature. In the second stage, the temperature is further reduced to 0-2 deg.C, and the operation time t2 can be set according to the food and its type, size, etc. as long as it can make the temperature uniform.

The infrared temperature sensor is used for detecting the temperature of the surface of the food, the other (second) temperature sensor is positioned at the bottom or the side and is used for detecting the temperature of the bottom or the side of the food, the temperature of the chamber can also be detected, the surface temperature of the food can be obtained by combining the detection results of the two, and the detection can also be realized by only adopting the infrared temperature sensor.

As shown in fig. 2 and 3, the refrigeration cycle system of the present invention includes: the device comprises an evaporator 10, a first capillary tube 11, a second capillary tube 12, an electric switching valve 13, a filter 14, a compressor 15, an air return tube assembly 16, an air return heat exchange section 17, a condenser 18 and an anti-condensation tube 19. The refrigerant passes through the compressor 15, the condenser 18, the condensation preventing pipe 19, the (dry) filter 14, the electric switching valve 13, the first and second capillary tube groups 12, the (freezing chamber 3) evaporator 10, and the air return pipe group 16, and finally returns to the compressor 15 to form a refrigeration cycle.

The capillary group includes a first capillary tube 11, a second capillary tube 12, and may also include a third capillary tube, a fourth capillary tube, or even more capillary tubes, the flow rate of the capillary group is controlled by the electric switching valve 13, for example, the flow rate V2 of one of the capillary tubes may be set, and the other is V1, and the flow rate is controlled by the electric switching valve 13, that is, the flow rate of the refrigerant passing through the capillary group is controlled, so as to control the refrigeration effect.

By reducing the flow of the capillary array, which is equivalent to reducing the flow of the refrigeration system, the evaporation pressure is reduced, thereby reducing the surface temperature of the evaporator 10 and thus speeding up the cooling of the compartment. By increasing the rotating speed of the fan of the condenser 18, the heat exchange between the refrigerant in the condenser 18 and the outside air is accelerated, so that the condensing pressure is reduced, the flow of a refrigerating system is reduced, the purpose of reducing the surface temperature of the evaporator 10 is achieved, and the cooling of the compartment is accelerated.

As shown in fig. 4 and 5, the refrigerator of the present invention includes a refrigerating compartment 1, a flash freezing compartment 2, and a freezing compartment 3. The instant freezing chamber 2 is provided with a temperature sensor, wherein the temperature sensor comprises a first temperature sensor 21 and/or a second temperature sensor 22, and the first temperature sensor 21 is an infrared temperature sensor.

The infrared temperature sensor of the present invention is also referred to as an infrared sensor.

The instant freezing chamber 2 of the present invention is also referred to as an instant freezing chamber. The instant freezing functional zone 23 of the present invention comprises an instant freezing chamber.

As shown in fig. 6, the present invention further provides a control system of a refrigeration system, including: the control system comprises a control unit, a compressor 15, a temperature sensor and a timer, wherein the control unit is in control connection with the compressor 15, the temperature sensor and the timer, and the control system is used for executing the control method. Wherein, the control unit can also be connected with the display and the temperature adjusting device in a control way. The control unit is connected with the compressor 15 through a frequency conversion board.

As shown in fig. 4 and 5, the present invention further provides a refrigeration system, wherein the refrigeration system adopts the control method of the present invention; or the refrigeration system is provided with the control system of the invention.

Preferably, the refrigeration system is a refrigerator.

The principles and processes of the present invention are further described below: the invention provides a control method capable of realizing instant freezing storage, which comprises a supercooling cooling stage, a supercooling relieving stage and a conventional refrigeration storage stage. And in the stage of supercooling and cooling, the compressor 15 rotates at a first preset compressor 15 rotation speed M1, the capillary group is controlled to operate at a first preset flow V1, the fan of the condenser 18 is controlled to operate at a first preset condenser 18 fan rotation speed S1, and the temperature is reduced in steps to ensure that the food enters a supercooling state. When the supercooling state is released, the rotating speed of the compressor 15 is adjusted to the maximum rotating speed M2, the capillary group is controlled to operate at the second preset flow rate V2, the fan of the condenser 18 is controlled to operate at the maximum rotating speed S2 of the fan of the condenser 18, the conventional refrigeration preservation temperature is controlled to be more than or equal to minus 7 ℃ and less than 0 ℃ Tc, and the food in the temperature area is preserved by instant freezing, so that the formed ice crystals are finer and more uniform, and the ice crystals are easy to cut and convenient to cut compared with the common refrigeration at minus 18 ℃. The invention feeds back the temperature difference of the surface of the food before t0 minutes in real time through the infrared sensor, and releases the supercooling state in time so as to freeze the food by the maximum cold air.

A control system of a refrigeration system (refrigerator) comprises a control unit, the refrigeration system and a refrigerator body.

The control system includes: the control unit, compressor 15, infrared sensor, temperature sensor, timer, condenser 18 fan, display, temperature regulation device. Wherein the control unit/thermostat can adjust the flash freezer compartment damper. When the user selects the flash freezing storage function on the display, the temperature is controlled in 3 stages. The three stages comprise a supercooling cooling stage, a supercooling relieving stage and a conventional refrigeration storage stage (optional). And in the supercooling and cooling stage, the compartment is cooled by stages through the control device. The method comprises the following steps:

step one, a user selects an instant freezing storage (storage) function on a display according to requirements, a frequency conversion board controls a compressor 15 to rotate at a first preset compressor 15 rotating speed M1, and/or a condenser 18 fan to rotate at a first preset condenser 18 fan rotating speed S1, and/or a capillary tube group to rotate at a first preset flow V1, so that an instant freezing chamber is cooled at a first preset temperature T1 and operates for a first preset time T1, a timer counts at the time, a temperature sensor detects the real-time temperature of the instant freezing chamber, and in the time T1, when the temperature of the instant freezing chamber reaches a first starting temperature point T1, the instant freezing chamber reaches a first starting temperature point T_ON1When the refrigerator is started, the air door of the instant freezing chamber is opened; when the temperature of the instant freezing room reaches a first shutdown temperature point T_OFF1Closing the air door of the instant freezing chamber; wherein 3800rpm is not less than M1 is not less than 4500rpm, T_ON1＝T1+T_B1/2,T_OFF1＝T_ON1–T_B2/2；T_B1And T_B2For a known parameter, T_B1Indicating the floating temperature of a starting point of the instantaneous freezing chamber in the starting process of the compressor 15; t is_B2The temperature difference between the start and stop of the instant freezing chamber is indicated; the step is that the temperature of the compartment is uniformly reduced to or increased to be more than 0 ℃ so as to be convenient for uniformly reducing the overall temperature later, and the temperature of the interior and the exterior of the food can be uniformly reduced, wherein the temperature is more than or equal to T1 and more than 0 ℃, and the temperature is more than 0 and less than or equal to T1 and less than or equal to 8 hours.

Step two, after the step is finished, the frequency conversion board controls the compressor 15 to rotate at a rotating speed M1, and/or the fan of the condenser 18 to rotate at a rotating speed S1, and/or the flow rate of the capillary group to be V1, so that the instant freezing chamber is cooled to operate at a second preset temperature T2, and the operation lasts for T2; the timer counts time in the period, when the temperature of the instant freezing room reaches the second starting temperature point T_ON2When the refrigerator is started, the air door of the instant freezing chamber is opened; when the temperature of the instant freezing room reaches a second shutdown temperature point T_OFF2Closing the air door of the instant freezing chamber; wherein T is_ON2＝T2+T_B1/2,TO_FF2＝T_ON2–T _B22; step three is performed.

After the third step and the second step are finished, the frequency conversion board controls the compressor 15 to operate at the rotating speed M1, and/or the fan of the condenser 18 to operate at the rotating speed S1, and/or the flow rate of the capillary group to operate at the third preset temperature T3 according to V1; when the temperature of the instant freezing room is highReaches the temperature point T of the third opening machine_ON3When the refrigerator is started, the air door of the instant freezing chamber is opened; when the temperature of the instant freezing room reaches a third shutdown temperature point T_OFF3Closing the air door of the instant freezing chamber; wherein T is_ON3＝T3+T_B1/2,T_OFF3＝T_ON3–T_B2And 2, in the process, judging that the infrared sensor instantly detects the surface temperature T0 of the food and the temperature T0 'before T0 minutes, comparing △ T (T0' -T0) < 0, if the supercooling release stage is met, and if the supercooling release stage is not met, continuing to operate according to the preset temperature T3.

Wherein T1 is more than T2 and more than T3, T1 is more than or equal to 5 ℃ and more than or equal to 0 ℃, T2 is more than or equal to 0 ℃ and less than or equal to 2 ℃, T3 is more than or equal to-10 ℃ and less than or equal to 0 ℃, T1 is more than 0 ℃, and T2 is less than or equal to 8 hours.

And step four, a supercooling release stage, wherein in the supercooling release stage, the rotating speed of a fan of the condenser 18 is increased to be S2, S1 is less than S2, S2 is the maximum rotating speed of the fan of the condenser 18, and/or the rotating speed of the compressor 15 is increased to be M2, M1 is less than M2, and M2 is the maximum rotating speed of the compressor 15, and/or the flow of the capillary group is controlled to be V2, wherein V2 is less than V1, the maximum cold air is supplied to the food, the running time is set to be a first preset supercooling release time tj, and the timer carries out timing in the period, so that ice crystals can be formed instantly by most of water in the supercooled food, and banding is generated rapidly through the maximum ice crystals, wherein 10h is more than or equal to Tj and is more than 0 h.

And step five, in the conventional refrigeration storage stage, controlling the chambers in the conventional storage stage according to Tc. The frequency conversion board controls the compressor 15 to operate at a rotating speed M1, and/or the fan of the condenser 18 to operate at a rotating speed S1, and/or the flow rate of the capillary group to operate at a preset conventional temperature Tc according to V1, and when the temperature of the greenhouse reaches a starting temperature point T_ONcWhen the refrigerator is started, the air door of the instant freezing chamber is opened; when the temperature of the instant freezing room reaches the shutdown temperature point T_OFFcClosing the air door of the instant freezing chamber; wherein T is_ONc＝T+T_B1/2,T_OFFc＝T_ONc–T_B2/2；-7≤Tc＜0℃。

Optionally, any or all of the stages of supercooling and cooling, the supercooling release stage, and the conventional storage stage of the present invention may include controlling the rotation speed of the freezing fan, as shown in table one, where P1 is the first preset rotation speed of the freezing fan, and P2 is the maximum rotation speed of the freezing fan. Optionally, in the supercooling release stage, the refrigeration fan is controlled to operate at 80% -100% of the maximum rotating speed P2.

The parameters of the fan rotating speed, the compressor 15 rotating speed, the electric field device and the like in each stage of the invention are shown in the table I.

Watch 1

Wherein V1 is not less than 4.5L/min and not more than 5L/min, V2 is not less than 2L/min and not more than 3L/min, S1 is not less than 1200rpm and not more than 1500rpm, S2 is not less than 1600rpm and not more than 1900rpm, M1 is not less than 1200rpm and not more than 1400rpm, M2 is not less than 3800rpm and not more than 4500rpm, P1 is not less than 1200rpm and not more than 2500 rpm.

Has the advantages that:

the invention has at least the following beneficial effects:

according to the refrigerator instant freezing storage control method and the refrigerator, when a user selects an instant freezing function, the temperature of an instant freezing room is uniform through a sectional type supercooling cooling stage, in the last 1 stage of the supercooling cooling stage, the supercooling removing stage and the supercooling removing stage can be determined to be entered in time through judging the front and back temperature change difference of the temperature of food, the rotating speed of the compressor 15 is increased, the compressor 15 is controlled to operate at 80% -100% of the maximum rotating speed M2 of the compressor 15, the capillary tube group is controlled to operate at the second preset flow rate V2, the fan of the condenser 18 is controlled to operate at 80% -100% of the maximum rotating speed S2 of the fan of the condenser, the food can pass through an ice crystal belt quickly, and long-term preservation of the food is facilitated. The present invention, preferably, further comprises a conventional storage stage after the supercooling release stage is completed, and the food such as meat can be easily cut by controlling the conventional storage stage.

Exemplary embodiments of the present disclosure are specifically illustrated and described above. It is to be understood that the present disclosure is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A refrigerating system instant freezing storage control method is characterized in that: the method comprises the following steps:

s01: the user selects the instant freezing function;

s04: and (3) performing supercooling release, increasing the rotating speed of the compressor, controlling the compressor to run at 80% -100% of the maximum rotating speed M2 of the compressor, reducing the flow of the capillary group, controlling the capillary group to run at a second preset flow V2, increasing the rotating speed of a fan of the condenser, controlling the fan of the condenser to run at 80% -100% of the maximum rotating speed S2 of the fan of the condenser, and setting the running time of the supercooling release as a first preset supercooling release time tj.

2. The control method according to claim 1, characterized in that: step S05 is also included after step S04: and executing conventional refrigeration preservation control, and controlling the compartment to operate according to a preset conventional temperature Tc, wherein Tc is more than or equal to-7 and less than 0 ℃.

3. The control method according to claim 2, characterized in that: step S05 further includes: controlling the compressor to operate at a first preset compressor rotation speed M1, controlling the capillary group to operate at a first preset flow rate V1, controlling the condenser fan to operate at a first preset condenser fan rotation speed S1, detecting the real-time temperature of the compartment in real time, and detecting the temperature of the compartment at a normal starting temperature point T when the temperature of the compartment reaches the normal starting temperature point_ONcWhen the air door is opened, the air door of the compartment is opened; when the room temperature reaches a first shutdown temperature point T_OFFcWhen the door is closed, the air door of the compartment is closed; t is_ONc＝Tc+T_B1/2,T_OFF3＝T_ON3–T_B2/2, wherein, M1<M2，V1>V2，S1<S2，T_B1Starting process of finger compressorStarting point floating temperature, T, of intermediate freezing chamber_B2The temperature difference refers to the opening and closing temperature difference of the instant freezing chamber.

4. The control method according to claim 3, characterized in that: t at 0 DEG C_B1≤2℃，0℃＜T_B2≤2℃。

5. The control method according to any one of claims 1 to 4, characterized in that: step S02 further includes: in the 1 st to nth stages, the compressor is controlled to operate at a first preset compressor rotation speed M1, the capillary tube group is controlled to operate at a first preset flow rate V1, and the condenser fan is controlled to operate at a first preset condenser fan rotation speed S1, wherein M1< M2, V1> V2, and S1< S2.

6. The control method according to claim 5, characterized in that: n is 3, in the first stage, the compartment is operated at a first preset temperature T1, and the operation time is a first preset time T1;

7. The control method according to claim 6, characterized in that: in the first stage, the real-time temperature of the compartment is detected in real time, and when the temperature of the compartment reaches a first starting temperature point T_ON1When the air door is opened, the air door of the compartment is opened; when the room temperature reaches a first shutdown temperature point T_OFF1Closing the air door of the instant freezing chamber; t is_ON1＝T1+T_B1/2,T_OFF1＝T_ON1–T_B2/2；

And/or, in the third stage, detecting the real-time temperature of the compartment in real time, and when the temperature of the compartment reaches the temperature point T of the third opening machine_ON3When the air door is opened, the air door of the compartment is opened; when the room temperature reaches a second shutdown temperature point T_OFF3Closing the air door of the instant freezing chamber; t is_ON3＝T3+T_B1/2,T_OFF2＝T_ON2–T_B2/2；

T_B1Indicates the floating temperature T of the starting point of the instantaneous freezing chamber in the starting process of the compressor_B2The temperature difference refers to the opening and closing temperature difference of the instant freezing chamber.

8. The control method according to claim 7, characterized in that: t1 is more than or equal to 0 ℃ at the temperature of 5 ℃, and/or T2 is more than or equal to 0 ℃ and less than or equal to 2 ℃, and/or T3 is more than or equal to-10 ℃ and less than or equal to 0 ℃, and/or T is more than 0 ℃ and less than or equal to 0 DEG C_B1At 2 ℃ or lower and/or at 0 ℃ or lower than T_B2At the temperature of less than or equal to 2 ℃, and/or t1 is more than 0 and less than or equal to 8 hours, and/or t2 is more than 0 and less than or equal to 8 hours.

9. The control method according to any one of claims 1 to 4, 6 to 8, characterized in that: the mode of detecting the temperature of the food in the chamber is to detect the surface temperature of the food by adopting an infrared temperature sensor.

10. The control method according to any one of claims 1 to 4, 6 to 8, characterized in that: the preset difference is 0.

11. A control system for a refrigeration system, comprising: the control unit, the compressor, temperature sensor, the time-recorder, the electronic diverter valve, the condenser fan, its characterized in that: the control unit is connected with the compressor, the temperature sensor, the timer, the electric switching valve and the condenser fan control, and the control system is used for executing the control method of any one of claims 1 to 10.

12. A refrigeration system, characterized by: the refrigeration system adopts the control method of any one of claims 1 to 10; or the refrigeration system has a control system as claimed in claim 11.

13. The refrigeration system of claim 12, wherein: the refrigeration system is a refrigerator.