CN116147862A - Refrigerator and door seal tightness detection method thereof - Google Patents

Abstract

The invention discloses a refrigerator and a door seal tightness detection method thereof, wherein when the refrigerator is in a door closing state, the operation parameters of the refrigerator are acquired to analyze the sealing state of the door seal, wherein the operation parameters comprise at least one of a real-time pressure value in a storage chamber, a real-time temperature value in the storage chamber and the power consumption of a compressor, and the sealing condition of the door seal can be accurately known by monitoring the change conditions of the parameters, so that a user is timely reminded when the door seal fails, and the high-temperature damage of food is avoided.

Description

Refrigerator and door seal tightness detection method thereof

Technical Field

The invention relates to the technical field of refrigerators, in particular to a refrigerator and a door seal tightness detection method thereof.

Background

The refrigerator working environment is complex, the door seal is used as a sealing element of the refrigerator, ageing is easy to occur, the sealing performance is reduced, even the refrigerator cannot be effectively sealed, heat and humid air in the environment easily enter the refrigerator, the temperature in the refrigerator is increased, the humidity is high, hot moisture continuously rises along with the accumulation of time, condensation is easy to occur on the top of a cold liner, or the moisture is brought to an evaporator, and the defrosting frequency and the power consumption of the expander are increased. Meanwhile, a large amount of environmental heat enters the refrigerator, so that the refrigerating efficiency of the refrigerator is reduced, and the energy consumption is increased. Therefore, an effective means for detecting the tightness of the dock seal is urgently needed.

Disclosure of Invention

The embodiment of the invention aims to provide a refrigerator and a door seal tightness detection method thereof, which can timely detect the tightness of a door seal and timely remind a user when the door seal cannot be effectively sealed.

To achieve the above object, an embodiment of the present invention provides a refrigerator including:

the refrigerator comprises a box body, wherein a storage chamber is formed in the box body, a door seal is arranged at an opening of the storage chamber, and the storage chamber at least comprises a refrigerating chamber and a freezing chamber;

the box door is arranged at the opening of the storage chamber and used for opening and closing the storage chamber;

the door opening and closing detection device is arranged in the box body and is used for detecting the opening and closing of the box door;

the controller is configured to:

after the refrigerator is powered on, acquiring the opening and closing condition of the refrigerator door detected by the door opening and closing detection device;

when the refrigerator door is in a closed state within a preset closing time, acquiring operation parameters of the refrigerator;

determining the sealing state of the door seal of the storage room according to the operation parameters and the standard parameters; wherein the operating parameter comprises at least one of a real-time pressure value in the storage chamber, a real-time temperature value in the storage chamber, and compressor power consumption; when the operation parameter of the refrigerator is a real-time pressure value in the storage chamber, the standard parameter value is an ambient pressure value; when the operation parameter of the refrigerator is a real-time temperature value in the storage chamber, the standard parameter value is a temperature difference threshold value; when the operation parameter of the refrigerator is the power consumption of the compressor, the standard parameter is a power consumption threshold.

As an improvement of the above, the refrigerator further includes:

the in-box pressure sensor is arranged in the storage chamber and is used for detecting the real-time pressure value of the storage chamber;

the pressure sensor outside the box is arranged outside the box and is used for detecting the ambient pressure value;

the controller is further configured to:

when the box door is in a closed state within a preset closing time period, acquiring the real-time pressure value and the environment pressure value once every preset first time period until the acquisition time period reaches the time period of a preset judging period;

calculating a real-time average pressure value and an ambient average pressure value within the first acquisition duration, and calculating a pressure difference value of the real-time average pressure value and the ambient average pressure value;

when the pressure difference value is larger than or equal to a preset first pressure threshold value, judging that the refrigerator door is sealed well;

and when the pressure difference value is smaller than the first pressure threshold value and larger than a preset second pressure threshold value, judging that the refrigerator door is not sealed well.

As an improvement of the above, the controller is further configured to:

when the pressure difference value is smaller than or equal to the second pressure threshold value, entering the next judging period, and recording the initial value of the accumulated times n as 1;

in a plurality of continuous judging periods, when the pressure difference value in each judging period is detected to be smaller than or equal to the second pressure threshold value, controlling the accumulated times n to be added with 1;

and when the accumulated times n is greater than a preset pressure difference times threshold value, judging that the door seal is invalid, and sending out prompt information.

As an improvement of the above, the refrigerator further includes:

the temperature sensor is arranged in the storage chamber and used for collecting real-time temperature values of the storage chamber;

the controller is further configured to:

when the box door is in a closed state within a preset closing time period, acquiring the real-time temperature value once every second time period until the acquisition time period reaches the time period of a preset operation time period;

calculating real-time average temperatures of a plurality of real-time temperature values acquired in the operation period;

calculating a temperature difference between the real-time average temperature and a set temperature in the refrigerator;

when the temperature difference value is smaller than or equal to a preset first temperature difference threshold value, judging that the refrigerator door is sealed well;

and when the temperature difference is larger than the first temperature difference threshold and smaller than a preset second temperature difference threshold, judging that the refrigerator door is not sealed well.

As an improvement of the above, the controller is further configured to:

when the temperature difference value is greater than or equal to the second temperature difference threshold value, entering the next judging period, and recording the initial value of the accumulated times m as 1;

in a plurality of continuous judging periods, when the temperature difference value in each judging period is detected to be greater than or equal to the second pressure threshold value, controlling the accumulated times m to be increased by 1;

and when the accumulated times m is greater than a preset temperature difference times threshold value, judging that the door seal is invalid, and sending out prompt information.

As an improvement of the above, the controller is further configured to:

when the box door is in a closed state within a preset closing time period, acquiring power and operation time period of the compressor once every third time period until the operation time period reaches a set time period;

calculating the power consumption of the compressor according to the power of the compressor and the operation time length;

when the power consumption of the compressor is smaller than or equal to a first power consumption threshold value, judging that the refrigerator door is sealed well;

and when the power consumption of the compressor is larger than the first power consumption threshold and smaller than a preset second power consumption threshold, judging that the sealing of the refrigerator door is poor.

As an improvement of the above, the controller is further configured to:

when the power consumption of the compressor is greater than or equal to the second power consumption threshold, entering a next judging period, and recording the initial value of the accumulated times k as 1;

in a plurality of continuous judging periods, when the power consumption of the compressor in one judging period is detected to be greater than or equal to the second power consumption threshold value, controlling the accumulated times k to be increased by 1;

and when the accumulated times k is greater than a preset power consumption times threshold, judging that the door seal is invalid, and sending out prompt information.

As an improvement of the above scheme, the priority of the operation parameters is as follows from high to low: real-time pressure value in the storage chamber, real-time temperature value in the storage chamber and power consumption of the compressor.

In order to achieve the above object, the embodiment of the present invention further provides a method for detecting tightness of a door seal of a refrigerator, where a door seal is disposed at an opening of a storage chamber of the refrigerator, the method comprising:

after detecting that the refrigerator is powered on, acquiring the opening and closing conditions of a refrigerator door of the refrigerator;

when the refrigerator door is in a closed state within a preset closing time, acquiring operation parameters of the refrigerator;

determining the sealing state of the door seal of the storage room according to the operation parameters and the standard parameters; wherein the operating parameter comprises at least one of a real-time pressure value in the storage chamber, a real-time temperature value in the storage chamber, and compressor power consumption; when the operation parameter of the refrigerator is a real-time pressure value in the storage chamber, the standard parameter value is an ambient pressure value; when the operation parameter of the refrigerator is a real-time temperature value in the storage chamber, the standard parameter value is a temperature difference threshold value; when the operation parameter of the refrigerator is the power consumption of the compressor, the standard parameter is a power consumption threshold.

Compared with the prior art, the refrigerator and the door seal tightness detection method thereof disclosed by the invention analyze the sealing state of the door seal by acquiring the operation parameters when the refrigerator is in the door closing state, wherein the operation parameters comprise at least one of the real-time pressure value in the storage chamber, the real-time temperature value in the storage chamber and the power consumption of the compressor, and the sealing condition of the door seal can be accurately known by monitoring the change conditions of the parameters, so that a user is timely reminded when the door seal fails, and the high-temperature damage of food is avoided.

Drawings

Fig. 1 is a schematic view of an external structure of a refrigerator according to an embodiment of the present invention;

fig. 2 is a schematic view of an internal structure of a refrigerator according to an embodiment of the present invention;

fig. 3 is another internal structure schematic view of a refrigerator according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a refrigeration system in a refrigerator according to an embodiment of the present invention;

fig. 5 is a first workflow diagram of a controller in a refrigerator according to an embodiment of the present invention;

fig. 6 is a second workflow diagram of a controller in a refrigerator according to an embodiment of the present invention;

fig. 7 is a third workflow diagram of a controller in a refrigerator according to an embodiment of the present invention;

fig. 8 is a fourth operational flow diagram of a controller in a refrigerator according to an embodiment of the present invention;

fig. 9 is a schematic diagram of information interaction between a refrigerator and a client provided by an embodiment of the present invention;

fig. 10 is a flowchart of a method for detecting tightness of a refrigerator door seal according to an embodiment of the present invention.

100 parts of a refrigerator; 200. a client; 300. a router; 400. a cloud server; 10. a refrigerating chamber; 20. a freezing chamber; 30. a press bin; 11. a refrigeration door; 12. refrigerating door seals; 21. a freezing door; 22. freezing the door seal; 1. a compressor; 2. a condenser; 3. an anti-condensation pipe; 4. drying the filter; 5. a capillary tube; 6. an evaporator; 7. a gas-liquid separator.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

The terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second" or the like may include one or more such features, either explicitly or implicitly. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Referring to fig. 1, fig. 1 is a schematic view of an external structure of a refrigerator 100 according to an embodiment of the present invention, where the refrigerator 100 has an approximately rectangular parallelepiped shape, and includes a case defining a storage space and a plurality of door bodies provided at an opening of the case, and the door bodies include a door body housing located outside the case, a door body liner located inside the case, an upper end cover, a lower end cover, and a heat insulating layer located between the door body housing, the door body liner, the upper end cover, and the lower end cover; typically, the insulating layer is filled with a foaming material. The cabinet is provided with a chamber, wherein the chamber comprises a press bin for placing components in the refrigerator, such as a storage compressor, and a storage space for storing food and the like. In the embodiment of the invention, a door opening and closing detection device (not shown) is further arranged in the box body and is used for detecting the opening and closing condition of the box door.

Referring to fig. 2, fig. 2 is a schematic view illustrating an internal structure of a refrigerator 100 according to an embodiment of the present invention. The storage space may be partitioned into a plurality of storage compartments, which may be configured as the refrigerating compartment 10, the freezing compartment 20, etc., according to the use. Each storage chamber is provided with one or more doors, for example, the upper storage chamber is provided with a double door. The door body can be pivoted at the opening of the box body and can also be opened in a drawer mode, so that drawer type storage is realized. And a door seal is arranged at the opening of the storage chamber and used for tightly contacting the door with the opening of the storage chamber when the door is closed. Illustratively, when the storage compartment includes the refrigerating compartment 10 and the freezing compartment 20, the refrigerating compartment 10 includes the refrigerating door 11 and the refrigerating door seal, and the freezing compartment 20 includes the freezing door 21 and the freezing door seal 22.

Referring to fig. 3, fig. 3 is another internal structure schematic view of a refrigerator 100 according to an embodiment of the present invention. The compressor 1 is installed in the press bin 30, and the condenser 2 is provided at one side of the compressor.

Referring to fig. 4, fig. 4 is a schematic view showing a structure of a refrigerating system in a refrigerator 100 according to an embodiment of the present invention, the refrigerating system including a compressor 1, a condenser 2, an anti-condensation pipe 3, a dry filter 4, a capillary 5, an evaporator 6, and a gas-liquid separator 7. The working processes of the refrigeration system comprise a compression process, a condensation process, a throttling process and an evaporation process.

The compression process comprises the following steps: when the power line of the refrigerator is inserted and the contact of the temperature controller is connected, the compressor 1 starts to work, the low-temperature and low-pressure refrigerant is sucked by the compressor 1, compressed into high-temperature and high-pressure overheat gas in the cylinder of the compressor 1 and then discharged to the condenser 2; the condensation process is as follows: the high-temperature and high-pressure refrigerant gas radiates heat through the condenser 2, the temperature is continuously reduced, the refrigerant gas is gradually cooled into normal-temperature and high-pressure saturated steam, the saturated steam is further cooled into saturated liquid, the temperature is not reduced any more, the temperature at the moment is called as condensing temperature, and the pressure of the refrigerant in the whole condensing process is almost unchanged; the throttling process is as follows: the condensed refrigerant saturated liquid is filtered by a dry filter 4 to remove moisture and impurities, and then flows into a capillary tube 5, throttling and depressurization are carried out through the capillary tube, and the refrigerant is changed into normal-temperature and low-pressure wet vapor; the evaporation process is as follows: the wet vapor with normal temperature and low pressure starts to absorb heat in the evaporator 6 for vaporization, so that the temperature of the evaporator and the surrounding temperature are reduced, the refrigerant is changed into low-temperature and low-pressure gas, the refrigerant coming out of the evaporator 6 returns to the compressor 1 again after passing through the gas-liquid separator 7, the process is repeated, and the heat in the refrigerator is transferred into the air outside the refrigerator, so that the purpose of refrigeration is realized.

Specifically, the controller in the refrigerator is used for: after the refrigerator is powered on, acquiring the opening and closing condition of the refrigerator door detected by the door opening and closing detection device; when the refrigerator door is in a closed state within a preset closing time, acquiring operation parameters of the refrigerator; and determining the sealing state of the door seal of the storage room according to the operation parameters and the standard parameters.

Referring to fig. 5, for example, fig. 5 is a first workflow diagram of a controller in a refrigerator configured to perform steps S11 to S15 according to an embodiment of the present invention. The operating parameters include at least one of a real-time pressure value in the storage chamber, a real-time temperature value in the storage chamber, and compressor power consumption; when the operation parameter of the refrigerator is a real-time pressure value in the storage chamber, the standard parameter value is an ambient pressure value; when the operation parameter of the refrigerator is a real-time temperature value in the storage chamber, the standard parameter value is a temperature difference threshold value; when the operation parameter of the refrigerator is the power consumption of the compressor, the standard parameter is a power consumption threshold.

In the embodiment of the invention, the sealing condition of the door seal can be accurately known by monitoring the change condition of the parameters, so that a user is timely reminded when the door seal is invalid, and the high-temperature damage of food is avoided.

Specifically, the refrigerator further includes:

the in-box pressure sensor is arranged in the storage chamber and is used for detecting the real-time pressure value of the storage chamber;

the pressure sensor outside the box is arranged outside the box and is used for detecting the ambient pressure value;

then, the controller in the refrigerator is configured to: when the box door is in a closed state within a preset closing time period, acquiring the real-time pressure value and the environment pressure value once every preset first time period until the acquisition time period reaches the time period of a preset judging period; calculating a real-time average pressure value and an ambient average pressure value within the first acquisition duration, and calculating a pressure difference value of the real-time average pressure value and the ambient average pressure value; when the pressure difference value is larger than or equal to a preset first pressure threshold value, judging that the refrigerator door is sealed well; and when the pressure difference value is smaller than the first pressure threshold value and larger than a preset second pressure threshold value, judging that the refrigerator door is not sealed well.

The controller is further configured to: when the pressure difference value is smaller than or equal to the second pressure threshold value, entering the next judging period, and recording the initial value of the accumulated times n as 1; in a plurality of continuous judging periods, when the pressure difference value in each judging period is detected to be smaller than or equal to the second pressure threshold value, controlling the accumulated times n to be added with 1; and when the accumulated times n is greater than a preset pressure difference times threshold value, judging that the door seal is invalid, and sending out prompt information.

Referring to fig. 6, an exemplary embodiment of the present invention provides a second workflow of a controller in a refrigerator, where the controller is further configured to execute steps S201 to S212 after detecting that the refrigerator door is in a closed state within a preset closing time period after executing step S13. When the refrigerator door is opened, the air pressure inside and outside the refrigerator is the same; after the door is closed, when the cold air is continuously input into the storage room under the sealed condition, the temperature in the refrigerator is reduced, and the gas volume in the refrigerator is reduced by the principle of thermal expansion and cold contraction, but the pressure of the refrigerator is gradually reduced due to the unchanged internal volume of the refrigerator, so that a certain pressure difference exists between the refrigerator and the outdoor environment pressure.

The workflow of steps S201 to S204 is: after the refrigerator is powered on, the accumulated times n are set to zero. Firstly judging whether the door is opened, if so, stopping collecting the pressure sensor value, and resetting the stored pressure value and the accumulated times n value. If the door is closed, continuously judging whether the door closing time is longer than the preset closing time (such as 3 h), if the door closing time is within 3h, stopping collecting the value of the pressure sensor, and waiting for the refrigerator to run stably. If the door closing time exceeds 3 hours, collecting the numerical value Pa and the environmental pressure value Pb of the inter-chamber pressure sensor once every first time period (such as 1 min), storing the numerical value Pa and the environmental pressure value Pb until a judging period (such as 1 hour) is reached, and starting to calculate an average value; calculating the average value Paa of the real-time pressure value Pa within 1 hour, calculating the average value Pbb of the environment pressure value Pb within 1 hour, calculating the pressure difference P between the real-time average pressure value Paa and the environment average pressure value Pbb, and entering the subsequent logic judgment.

The working procedures of steps S205 to S212 are as follows: when the pressure difference P is larger than or equal to a first pressure threshold P1, namely P1 is smaller than or equal to P, the difference between the pressures inside and outside the refrigerator is larger, the sealing of the door seal of the refrigerator is good, the accumulated times n are cleared, and a judging period is restarted. When the pressure difference P is between the first pressure threshold P1 and the second pressure threshold P2, namely P2 is smaller than P1, the difference between the indoor pressure and the outdoor pressure of the refrigerator is not very large, the sealing of the door seal of the refrigerator is poor, the influence is not large, and the door seal does not need to be replaced. When the pressure difference P is smaller than or equal to the second pressure threshold P2, that is, P is smaller than or equal to P2, it is indicated that the real-time average pressure value Paa is almost equal to the ambient average pressure value Pbb, and there is a risk of dock seal failure, then the accumulated number n is set to be 1, a judging period is repeated, that is, the steps S201 to S204 are repeated, the pressure difference P is recalculated, if P is still smaller than or equal to P2, the accumulated number n is increased by 1 (at this time ), and so on, if n continuous judging periods are all smaller than P2, and n is greater than the differential pressure number threshold (for example, 4), that is, n=5, it indicates that the difference between the indoor and the outdoor pressures of the refrigerator is not large and is almost equal, it indicates that the dock seal has failed, the outdoor air can enter the refrigerator to cause the indoor and the outdoor pressures of the refrigerator to be large, so the dock seal failure, the user is prompted to replace the dock seal, and if n continuous number is smaller than the differential pressure number threshold, a judging period is restarted; if P is not less than or equal to P2, the continuous times n are cleared, and a judging period is restarted.

Specifically, the refrigerator further includes:

the temperature sensor is arranged in the storage chamber and used for collecting real-time temperature values of the storage chamber;

the controller is further configured to: when the box door is in a closed state within a preset closing time period, acquiring the real-time temperature value once every second time period until the acquisition time period reaches the time period of a preset operation time period; calculating real-time average temperatures of a plurality of real-time temperature values acquired in the operation period; calculating a temperature difference between the real-time average temperature and a set temperature in the refrigerator; when the temperature difference value is smaller than or equal to a preset first temperature difference threshold value, judging that the refrigerator door is sealed well; and when the temperature difference is larger than the first temperature difference threshold and smaller than a preset second temperature difference threshold, judging that the refrigerator door is not sealed well.

The controller is further configured to: when the temperature difference value is greater than or equal to the second temperature difference threshold value, entering the next judging period, and recording the initial value of the accumulated times m as 1; in a plurality of continuous judging periods, when the temperature difference value in each judging period is detected to be greater than or equal to the second pressure threshold value, controlling the accumulated times m to be increased by 1; and when the accumulated times m is greater than a preset temperature difference times threshold value, judging that the door seal is invalid, and sending out prompt information.

Referring to fig. 7, an exemplary embodiment of the present invention provides a third workflow of a controller in a refrigerator, where the controller is further configured to execute steps S301 to S311 after detecting that the refrigerator door is in a closed state within a preset closing time period after executing step S13. When the refrigerator runs stably, the temperature change of the refrigerator tends to be stable under the premise that the refrigerator door is not opened, for example, the temperature of the refrigerating chamber fluctuates between 1 ℃ and 5 ℃ and the set temperature (the gear temperature regulated by a user) cannot be excessively different, and even if the temperature rise exists, the temperature rise is not obvious; when the door seal fails, outdoor air can enter the storage chamber to cause the temperature of the storage chamber to rise, and at the moment, the temperature in the storage chamber can rise and the temperature difference between the temperature and the set temperature is gradually increased. In the embodiment of the invention, the temperature difference threshold is set to judge the temperature change condition in the refrigerator chamber and determine the sealing degree.

The working procedures of steps S301 to S303 are as follows: after the refrigerator is electrified, the temperature of the compartment is set, the accumulated times m are set to be zero, and the ambient temperature is acquired. Firstly judging whether the ambient temperature is greater than the set temperature Tw, if so, continuously judging whether the door is opened, if so, stopping collecting the Tn value of the indoor temperature sensor in the room, and completely clearing the Tn value and the times m collected before. If the door is closed, continuously judging whether the door closing time is more than 3 hours, if the door closing time is more than 3 hours, acquiring a temperature sensor value in a compartment once every a preset second time period (such as 1 min) and storing the real-time temperature value Tn; and calculating the average value of the temperature values Tn within the time when the closing time of the box door reaches 5 hours (including the collection time length 2h and the originally accumulated closing time length 3 h), obtaining the real-time average temperature Tm, and calculating the temperature difference value T between the real-time average temperature Tm and the set temperature Tw.

The working process of steps S306 to S313 is as follows: when the temperature difference T is smaller than or equal to a first temperature difference threshold T1, namely T is smaller than or equal to T1, the temperature rise of the refrigerator is not obvious, the door seal of the refrigerator is sealed well at the moment, the accumulated times m are cleared, and a judging period is restarted. When the temperature difference T is between the first temperature difference threshold T1 and the second temperature difference threshold T2, namely T2 is smaller than T1, the temperature rise of the refrigerator is indicated to be started, but the temperature rise is not very large, the sealing of the door seal of the refrigerator is poor, the influence is not large, and the door seal does not need to be replaced. When the temperature difference T is greater than or equal to the second temperature difference threshold T2, that is, T2 is less than or equal to T, it is shown that the average temperature Tm is greater than the set temperature Tw, and there is a risk of door seal failure, at this time, the cumulative number m is set to 1, a judging period is repeated, that is, the steps S301 to S203 are repeated, the temperature difference T is recalculated, if T2 is less than or equal to T, the cumulative number m is increased by 1 (at this time ), and so on, if m continuous judging periods all satisfy T2 less than or equal to T, and m > the temperature difference threshold (such as 4), that is, m=5, it is shown that the average temperature Tm is greater than the set temperature Tw after a long time of judgment, it is shown that the door seal has failed, the outdoor air can enter the refrigerator to cause the temperature rise in the refrigerator, so the door seal of the refrigerator fails, the user is prompted to replace the door seal, and if m continuous number is less than the temperature difference threshold, a judging period is restarted; if T2 is not less than or equal to T, the continuous times m are cleared, and a judging period is restarted.

Specifically, the controller is further configured to: when the box door is in a closed state within a preset closing time period, acquiring power and operation time period of the compressor once every third time period until the operation time period reaches a set time period; calculating the power consumption of the compressor according to the power of the compressor and the operation time length; when the power consumption of the compressor is smaller than or equal to a first power consumption threshold value, judging that the refrigerator door is sealed well; and when the power consumption of the compressor is larger than the first power consumption threshold and smaller than a preset second power consumption threshold, judging that the sealing of the refrigerator door is poor.

The controller is further configured to: when the power consumption of the compressor is greater than or equal to the second power consumption threshold, entering a next judging period, and recording the initial value of the accumulated times k as 1; in a plurality of continuous judging periods, when the power consumption of the compressor in one judging period is detected to be greater than or equal to the second power consumption threshold value, controlling the accumulated times k to be increased by 1; and when the accumulated times k is greater than a preset power consumption times threshold, judging that the door seal is invalid, and sending out prompt information.

Referring to fig. 8, fig. 8 is a fourth operation flowchart of a controller in a refrigerator according to an embodiment of the present invention, where the controller is further configured to execute steps S401 to S411 after detecting that the refrigerator door is in a closed state within a preset closing time period after executing step S13. When the refrigerator is stably operated (the compressor is in a starting state), the temperature change of the refrigerator tends to be stable under the premise that the refrigerator door is not opened, and at the moment, the compressor is stably operated, and the power consumption change of the compressor is not great; if the door seal fails, the temperature rise is obvious, the period of starting the compressor for refrigeration becomes more, and the power consumption is increased. In the embodiment of the invention, the power consumption threshold is set to judge the power consumption change condition of the compressor and determine the sealing degree of the refrigerator.

The working procedures of steps S401 to S403 are as follows: after the refrigerator is electrified, setting the accumulated times k as zero, judging whether a door is opened, if so, stopping collecting the power Q and the time t of the compressor, and clearing all the previously collected numerical values and the times k. If the door is closed, continuously judging whether the closing time of the door is more than 3 hours, if the closing time of the door is more than 3 hours, acquiring and storing the power Q and the operation time t of the compressor once every interval of a preset third time period (such as 1 min); and judging whether the running time t is longer than the set time, if so, calculating the power consumption W of the compressor according to the power Q and the time t, and storing the W.

The working procedures of steps S406 to S413 are as follows: when the power consumption W of the compressor is smaller than or equal to a first power consumption threshold W1, namely that W is smaller than or equal to W1, the temperature rise of the refrigerator is not obvious, the power consumption of the compressor is stable and smaller than a set threshold, the door seals of the refrigerator are sealed well at the moment, the accumulated times k are cleared, and a judging period is restarted. When the power consumption W of the compressor is between the first power consumption threshold W1 and the second power consumption threshold W2, namely, W1 is smaller than W2, the power change of the compressor is obvious, but not very large, the refrigerator door seal is poor in sealing, but the influence is not large, and the door seal is not required to be replaced. When the power consumption W of the compressor is greater than or equal to the second power consumption threshold W2, namely W2 is less than or equal to W, the change of the power consumption W of the compressor is obvious, the power consumption is obviously increased, and the risk of door seal failure exists, the accumulated number k is set to be 1, a judging period is repeated, namely the steps S401-S403 are repeated, the power consumption W of the compressor is recalculated, if W2 is less than or equal to W, the accumulated number m is increased by 1 (at the moment) again, and the like, if k judging periods continuously meet W2 less than or equal to W and k is greater than the power consumption number threshold (such as 4), namely k=5, the power consumption W of the compressor is still large at the moment, the door seal is invalid, the outdoor air can enter the refrigerator to cause the indoor temperature of the refrigerator to be increased, the power consumption of the compressor is increased, the door seal of the refrigerator is invalid, the user is prompted to replace the door seal, and if the k is less than the temperature difference number threshold, a judging period is restarted; if T2 is not less than or equal to T, the continuous times k are cleared, and a judging period is restarted.

Further, the priority of the operation parameters is as follows from high to low: real-time pressure value in the storage chamber, real-time temperature value in the storage chamber and power consumption of the compressor. For example, for the above three operation parameters, one operation flow is respectively corresponding to one operation flow for judging the tightness of the refrigerator door seal, in practical application, the three operation parameters may be independently present to judge the tightness of the refrigerator door seal, when the three operation parameters exist simultaneously or two by two, the operation parameters corresponding to the highest priority are selected according to the above priority to judge the tightness of the refrigerator door seal, for example, when all the three operation parameters exist, the refrigerator door tightness is preferentially judged according to the real-time pressure value in the storage chamber, if the real-time pressure value is not obtained (such as the damage of the pressure detection device), the real-time temperature judgment flow in the storage chamber is used to judge the tightness of the refrigerator door seal.

Further, referring to fig. 9, fig. 9 is a schematic diagram illustrating information interaction between the refrigerator 100 and the client 200 according to an embodiment of the present invention, where the refrigerator 100 establishes a data connection with the client 200 through the router 300 or the cloud server 400. When the refrigerator 100 and the client 200 communicate through the router 300, the refrigerator 100 and the client 200 are closely spaced, and a user can view the operation condition of the refrigerator or the storage condition of food materials placed in a kitchen in a living room or a room. When the refrigerator 100 and the client 200 communicate through the cloud server 400, the refrigerator 100 and the client 200 are far apart, and a user can perform data interaction with the refrigerator 100 through an APP installed in the client 200, and meanwhile, remote control of the refrigerator 100 can be realized.

Compared with the prior art, the refrigerator disclosed by the invention has the advantages that when the refrigerator is in the door closing state, the operation parameters are obtained to analyze the sealing state of the door seal, wherein the operation parameters comprise at least one of the real-time pressure value in the storage chamber, the real-time temperature value in the storage chamber and the power consumption of the compressor, and the sealing condition of the door seal can be accurately known by monitoring the change condition of the parameters, so that a user is timely reminded when the door seal fails, and the high-temperature damage of food is avoided.

Referring to fig. 10, fig. 10 is a flowchart of a method for detecting tightness of a refrigerator door seal according to an embodiment of the present invention. A door seal is arranged at an opening of a storage chamber of the refrigerator, and the method comprises the following steps:

s1, after detecting that a refrigerator is powered on, acquiring the opening and closing conditions of a refrigerator door of the refrigerator;

s2, when the refrigerator door is in a closed state within a preset closing time, acquiring operation parameters of the refrigerator;

s3, determining the sealing state of the door seal of the storage room according to the operation parameters and the standard parameters.

Wherein the operating parameter comprises at least one of a real-time pressure value in the storage chamber, a real-time temperature value in the storage chamber, and compressor power consumption; when the operation parameter of the refrigerator is a real-time pressure value in the storage chamber, the standard parameter value is an ambient pressure value; when the operation parameter of the refrigerator is a real-time temperature value in the storage chamber, the standard parameter value is a temperature difference threshold value; when the operation parameter of the refrigerator is the power consumption of the compressor, the standard parameter is a power consumption threshold.

Specifically, when the operation parameter of the refrigerator is a real-time pressure value in the storage chamber, the obtaining the operation parameter of the refrigerator includes:

when the box door is in a closed state within a preset closing time period, acquiring the real-time pressure value and the environment pressure value once every preset first time period until the acquisition time period reaches the time period of a preset judging period; the determining the sealing state of the door seal of the storage chamber according to the operation parameter and the standard parameter comprises the following steps:

calculating a real-time average pressure value and an ambient average pressure value within the first acquisition duration, and calculating a pressure difference value of the real-time average pressure value and the ambient average pressure value;

when the pressure difference value is larger than or equal to a preset first pressure threshold value, judging that the refrigerator door is sealed well;

when the pressure difference value is smaller than the first pressure threshold value and larger than a preset second pressure threshold value, judging that the refrigerator door is poor in sealing;

when the pressure difference value is smaller than or equal to the second pressure threshold value, entering the next judging period, and recording the initial value of the accumulated times n as 1; in a plurality of continuous judging periods, when the pressure difference value in each judging period is detected to be smaller than or equal to the second pressure threshold value, controlling the accumulated times n to be added with 1; and when the accumulated times n is greater than a preset pressure difference times threshold value, judging that the door seal is invalid, and sending out prompt information.

Specifically, when the operation parameter of the refrigerator is a real-time pressure value in the storage chamber, the obtaining the operation parameter of the refrigerator includes:

when the box door is in a closed state within a preset closing time period, acquiring the real-time temperature value once every second time period until the acquisition time period reaches the time period of a preset operation time period; the determining the sealing state of the door seal of the storage chamber according to the operation parameter and the standard parameter comprises the following steps:

calculating real-time average temperatures of a plurality of real-time temperature values acquired in the operation period;

calculating a temperature difference between the real-time average temperature and a set temperature in the refrigerator;

when the temperature difference value is smaller than or equal to a preset first temperature difference threshold value, judging that the refrigerator door is sealed well;

when the temperature difference is larger than the first temperature difference threshold and smaller than a preset second temperature difference threshold, judging that the refrigerator door is poor in sealing;

when the temperature difference value is greater than or equal to the second temperature difference threshold value, entering the next judging period, and recording the initial value of the accumulated times m as 1; in a plurality of continuous judging periods, when the temperature difference value in each judging period is detected to be greater than or equal to the second pressure threshold value, controlling the accumulated times m to be increased by 1; and when the accumulated times m is greater than a preset temperature difference times threshold value, judging that the door seal is invalid, and sending out prompt information.

Specifically, when the operation parameter of the refrigerator is a real-time pressure value in the storage chamber, the obtaining the operation parameter of the refrigerator includes:

when the box door is in a closed state within a preset closing time period, acquiring power and operation time period of the compressor once every third time period until the operation time period reaches a set time period; the determining the sealing state of the door seal of the storage chamber according to the operation parameter and the standard parameter comprises the following steps:

calculating the power consumption of the compressor according to the power of the compressor and the operation time length;

when the power consumption of the compressor is smaller than or equal to a first power consumption threshold value, judging that the refrigerator door is sealed well;

when the power consumption of the compressor is larger than the first power consumption threshold and smaller than a preset second power consumption threshold, judging that the sealing of the refrigerator door is poor;

when the power consumption of the compressor is greater than or equal to the second power consumption threshold, entering a next judging period, and recording the initial value of the accumulated times k as 1; in a plurality of continuous judging periods, when the power consumption of the compressor in one judging period is detected to be greater than or equal to the second power consumption threshold value, controlling the accumulated times k to be increased by 1; and when the accumulated times k is greater than a preset power consumption times threshold, judging that the door seal is invalid, and sending out prompt information.

Specifically, the priority of the operation parameters is as follows from high to low: real-time pressure value in the storage chamber, real-time temperature value in the storage chamber and power consumption of the compressor.

It should be noted that, the working process of the method for detecting the tightness of the refrigerator door seal according to the embodiment of the present invention may refer to the working flow chart of the controller in the refrigerator according to the above embodiment, and will not be described herein.

Compared with the prior art, the method for detecting the tightness of the refrigerator door seal disclosed by the invention has the advantages that the tightness of the door seal is analyzed by acquiring the operation parameters when the refrigerator is in the door closing state, wherein the operation parameters comprise at least one of the real-time pressure value in the storage chamber, the real-time temperature value in the storage chamber and the power consumption of the compressor, and the tightness of the door seal can be accurately known by monitoring the change conditions of the parameters, so that a user is timely reminded when the door seal fails, and the high-temperature damage of food is avoided.

While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.

Claims (9)

1. A refrigerator, comprising:

the refrigerator comprises a box body, wherein a storage chamber is formed in the box body, a door seal is arranged at an opening of the storage chamber, and the storage chamber at least comprises a refrigerating chamber and a freezing chamber;

the box door is arranged at the opening of the storage chamber and used for opening and closing the storage chamber;

the door opening and closing detection device is arranged in the box body and is used for detecting the opening and closing of the box door;

the controller is configured to:

after the refrigerator is powered on, acquiring the opening and closing condition of the refrigerator door detected by the door opening and closing detection device;

when the refrigerator door is in a closed state within a preset closing time, acquiring operation parameters of the refrigerator;

determining the sealing state of the door seal of the storage room according to the operation parameters and the standard parameters; wherein the operating parameter comprises at least one of a real-time pressure value in the storage chamber, a real-time temperature value in the storage chamber, and compressor power consumption; when the operation parameter of the refrigerator is a real-time pressure value in the storage chamber, the standard parameter value is an ambient pressure value; when the operation parameter of the refrigerator is a real-time temperature value in the storage chamber, the standard parameter value is a temperature difference threshold value; when the operation parameter of the refrigerator is the power consumption of the compressor, the standard parameter is a power consumption threshold.

2. The refrigerator of claim 1, further comprising:

the in-box pressure sensor is arranged in the storage chamber and is used for detecting the real-time pressure value of the storage chamber;

the pressure sensor outside the box is arranged outside the box and is used for detecting the ambient pressure value;

the controller is further configured to:

when the box door is in a closed state within a preset closing time period, acquiring the real-time pressure value and the environment pressure value once every preset first time period until the acquisition time period reaches the time period of a preset judging period;

calculating a real-time average pressure value and an ambient average pressure value within the first acquisition duration, and calculating a pressure difference value of the real-time average pressure value and the ambient average pressure value;

when the pressure difference value is larger than or equal to a preset first pressure threshold value, judging that the refrigerator door is sealed well;

and when the pressure difference value is smaller than the first pressure threshold value and larger than a preset second pressure threshold value, judging that the refrigerator door is not sealed well.

3. The refrigerator of claim 2, wherein the controller is further configured to:

when the pressure difference value is smaller than or equal to the second pressure threshold value, entering the next judging period, and recording the initial value of the accumulated times n as 1;

in a plurality of continuous judging periods, when the pressure difference value in each judging period is detected to be smaller than or equal to the second pressure threshold value, controlling the accumulated times n to be added with 1;

and when the accumulated times n is greater than a preset pressure difference times threshold value, judging that the door seal is invalid, and sending out prompt information.

4. The refrigerator of claim 1, further comprising:

the temperature sensor is arranged in the storage chamber and used for collecting real-time temperature values of the storage chamber;

the controller is further configured to:

when the box door is in a closed state within a preset closing time period, acquiring the real-time temperature value once every second time period until the acquisition time period reaches the time period of a preset operation time period;

calculating real-time average temperatures of a plurality of real-time temperature values acquired in the operation period;

calculating a temperature difference between the real-time average temperature and a set temperature in the refrigerator;

when the temperature difference value is smaller than or equal to a preset first temperature difference threshold value, judging that the refrigerator door is sealed well;

and when the temperature difference is larger than the first temperature difference threshold and smaller than a preset second temperature difference threshold, judging that the refrigerator door is not sealed well.

5. The refrigerator of claim 4, wherein the controller is further configured to:

when the temperature difference value is greater than or equal to the second temperature difference threshold value, entering the next judging period, and recording the initial value of the accumulated times m as 1;

in a plurality of continuous judging periods, when the temperature difference value in each judging period is detected to be greater than or equal to the second pressure threshold value, controlling the accumulated times m to be increased by 1;

and when the accumulated times m is greater than a preset temperature difference times threshold value, judging that the door seal is invalid, and sending out prompt information.

6. The refrigerator of claim 1, wherein the controller is further configured to:

when the box door is in a closed state within a preset closing time period, acquiring power and operation time period of the compressor once every third time period until the operation time period reaches a set time period;

calculating the power consumption of the compressor according to the power of the compressor and the operation time length;

when the power consumption of the compressor is smaller than or equal to a first power consumption threshold value, judging that the refrigerator door is sealed well;

and when the power consumption of the compressor is larger than the first power consumption threshold and smaller than a preset second power consumption threshold, judging that the sealing of the refrigerator door is poor.

7. The refrigerator of claim 6, wherein the controller is further configured to:

when the power consumption of the compressor is greater than or equal to the second power consumption threshold, entering a next judging period, and recording the initial value of the accumulated times k as 1;

in a plurality of continuous judging periods, when the power consumption of the compressor in one judging period is detected to be greater than or equal to the second power consumption threshold value, controlling the accumulated times k to be increased by 1;

and when the accumulated times k is greater than a preset power consumption times threshold, judging that the door seal is invalid, and sending out prompt information.

8. The refrigerator of claim 1, wherein the priority of the operation parameters is, in order from high to low: real-time pressure value in the storage chamber, real-time temperature value in the storage chamber and power consumption of the compressor.

9. The refrigerator door seal tightness detection method is characterized in that a door seal is arranged at an opening of a storage chamber of a refrigerator, and the method comprises the following steps:

after detecting that the refrigerator is powered on, acquiring the opening and closing conditions of a refrigerator door of the refrigerator;

when the refrigerator door is in a closed state within a preset closing time, acquiring operation parameters of the refrigerator;

determining the sealing state of the door seal of the storage room according to the operation parameters and the standard parameters; wherein the operating parameter comprises at least one of a real-time pressure value in the storage chamber, a real-time temperature value in the storage chamber, and compressor power consumption; when the operation parameter of the refrigerator is a real-time pressure value in the storage chamber, the standard parameter value is an ambient pressure value; when the operation parameter of the refrigerator is a real-time temperature value in the storage chamber, the standard parameter value is a temperature difference threshold value; when the operation parameter of the refrigerator is the power consumption of the compressor, the standard parameter is a power consumption threshold.

Images