WO2017202090A1

WO2017202090A1 - Nitrogen generation control method and apparatus for refrigerator

Info

Publication number: WO2017202090A1
Application number: PCT/CN2017/074609
Authority: WO
Inventors: 娄喜才; 王铭; 刘昀曦; 牟森
Original assignee: 青岛海尔股份有限公司
Priority date: 2016-05-26
Filing date: 2017-02-23
Publication date: 2017-11-30
Also published as: CN106016950A; CN106016950B

Abstract

Provided are a nitrogen generation control method and apparatus for a refrigerator. A sealed space is arranged in a storage compartment of a refrigerator, and the refrigerator is provided with a nitrogen generation apparatus (102) for providing nitrogen for the sealed space. The nitrogen generation control method for a refrigerator comprises: obtaining a time period in which the number of opening times of a sealed space exceeds a preset threshold and a running time point of the refrigerator; and determining whether the running time point falls within the time period or whether the time length from the running time point to the starting point of the time period is less than a first preset time threshold, and forbidding opening of the nitrogen generation apparatus (102) of the refrigerator until the time period ends on condition that a result of any determining is yes. By means of the control method, the nitrogen generation apparatus (102) is prevented from being turned on in a frequent opening time period of the sealed space by a user or when the time period is approaching, thereby effectively preventing nitrogen in the sealed space from losing, and reducing the energy consumption of the refrigerator.

Description

Nitrogen control method and device for refrigerator

Technical field

The invention relates to the field of home appliance control, and in particular to a method and a device for controlling nitrogen production of a refrigerator.

Background technique

With the development of society and the improvement of people's living standards, and the pace of people's life is getting faster and faster, people often buy a large number of items in the refrigerator, but for leafy vegetables and melons and fruits, the low temperature in the refrigerator room is not only It will cause wrinkles and marks on the skin of these foods, and will also affect their original taste and nutrition.

As a colorless, non-toxic and odorless inert gas, nitrogen has been widely used in the field of food preservation. The nitrogen storage compartment of the refrigerator is used to balance the carbon dioxide and oxygen, which can effectively delay the storage. Oxidative deterioration and decay, so as to achieve food preservation.

In the prior art, the nitrogen concentration control can be performed according to a predetermined procedure by the concentration sensor, but the following disadvantages exist: the refrigerator performs nitrogen control according to the actual concentration value of each compartment and the set concentration value, so the nitrogen production process may occur at any time, It may just end the nitrogen production process before the user opens the refrigerator door to pick up and place the food. However, part of the nitrogen generated during the nitrogen production process will be wasted due to the opening of the refrigerator door body, increasing the energy consumption of the refrigerator and affecting the user experience.

Summary of the invention

In view of the above problems, the present invention has been made in order to provide a nitrogen control method and apparatus for a refrigerator that overcomes the above problems or at least partially solves the above problems.

A further object of the invention is to reduce the energy consumption of the refrigerator.

It is a further object of the present invention to enhance the user experience.

In particular, the present invention provides a method for controlling nitrogen production in a refrigerator, wherein a sealed space is provided inside a storage compartment of the refrigerator, and the refrigerator is provided with a nitrogen generating device for supplying nitrogen to the sealed space, the method comprising: acquiring a seal The time period in which the number of times of opening the space exceeds the preset threshold is calculated according to the switch record of the sealed space; obtaining the running time of the refrigerator; and determining whether the running time is within the time period or the starting point of the running time to the time period Whether the time is less than the first preset time threshold, and if any of the above judgment results is yes, the nitrogen generating device of the refrigerator is prohibited from being opened. Start until the end of the time period.

Optionally, the method further includes: dividing the timing period into a plurality of statistical time segments, and setting a corresponding counter for each statistical time period; and detecting a switching event of the sealed space to correspond to the moment when the switching event occurs The counter counts, and after a preset statistical period, the switch record of the sealed space is updated according to the count value of the counter of each statistical time period, wherein each statistical period includes a preset number of timing periods.

Optionally, before the step of updating the switch record of the sealed space according to the count value of the counter of each statistical time period, the method further includes: determining whether the number of the time periods in which the switch event occurs in the statistical period is less than a preset time period threshold; And if not, the count value in the statistical period is set to be valid, and the switch record is updated by the count value in the statistical period, and if so, the count value in the statistical period is set to be invalid, and the previous switch record is retained.

Optionally, the step of updating the switch record by using the count value in the statistical period includes: sorting each statistical time period in the statistical period according to the count value from high to low to obtain a sequence of the first statistical time period; Each of the statistical time periods is sorted according to the count value from high to low to obtain a second statistical time period sequence; and the plurality of statistical time periods in the first statistical time period sequence and the second statistical time period sequence are matched in the first statistical time period. And determining a number of the same statistical time period in the first statistical time period sequence and the second statistical time period sequence; and if the number of the same statistical time period is higher than the preset value, the statistical period is The count value in the switch is combined with the count value in the switch record to obtain a new switch record. If the number of the same statistical time period is less than or equal to the preset value, the count value record in the statistical period is replaced. Switch the count value in the record to get a new switch record.

Optionally, before the step of acquiring the running time of the refrigerator, the method further comprises: detecting an operating state of the nitrogen generating device of the refrigerator, and acquiring an operating moment of the refrigerator when the nitrogen generating device is turned off.

Optionally, after the step of acquiring the running time of the refrigerator, the method further includes: determining whether the time from the running time to the starting point of the time period is greater than a second preset time threshold, where the second preset time threshold is greater than the first preset time threshold And if not, performing a step of determining whether the running time is within the time period or whether the running time to the starting point of the time period is less than the first preset time threshold, and if so, determining the nitrogen detecting concentration and the nitrogen setting concentration of the sealed space Whether the difference is greater than the first preset concentration value, and when the judgment result is YES, the nitrogen generator is controlled to be turned on.

Optionally, when the time from the running time to the starting point of the time period is less than the second preset time threshold but greater than the first preset time threshold, determining the difference between the nitrogen detecting concentration and the nitrogen setting concentration Whether the value is greater than the second preset concentration value, and when the determination result is YES, controlling the nitrogen generator to be turned on, wherein the second preset concentration value is greater than the first preset concentration value.

According to another aspect of the present invention, a nitrogen control device for a refrigerator is also provided. Wherein, the inside of the storage compartment of the refrigerator is provided with a sealed space, and the refrigerator is provided with a nitrogen generating device for supplying nitrogen to the sealed space, the device comprising: a time period obtaining module configured to obtain the number of times the sealed space of the refrigerator is opened exceeding a preset threshold The time period of the refrigerator sealing space is counted according to the switch record of the sealed space; the time acquisition module is configured to obtain the running time of the refrigerator; and the nitrogen control module is configured to determine whether the running time is within the time period or the running time Whether the time to the starting point of the time period is less than the first preset time threshold, and if any of the above determination results is yes, the nitrogen generator of the refrigerator is prohibited from being opened until the end of the time period.

Optionally, the device further includes: a space detecting module configured to detect a switching event of the sealed space; and a counting module configured to divide the counting period into a plurality of statistical time segments, and set a corresponding counter for each statistical time period, And counting according to the moment when the switch event occurs in the corresponding counter; and the record update module, configured to update the switch record of the sealed space according to the counter value of each statistical time period after a preset statistical period, wherein Each statistical period contains a preset number of timing periods.

Optionally, the record update module is further configured to: determine whether the number of time periods in which the switch event occurs in the statistical period is less than a preset time period threshold; and if not, set the count value in the statistical period to be valid, and use The count value in the statistical period updates the switch record, and if so, the count value in the statistical period is set to be invalid, and the previous switch record is retained.

Optionally, the record update module is further configured to: sort each statistical time period in the statistical period according to the count value from high to low to obtain a first statistical time period sequence; and compare each statistical time period in the switch record according to the count value. Sorting from high to low to obtain a second statistical time period sequence; matching the first statistical time period sequence and the second statistical time period in the second statistical time period sequence to determine the first statistical time period sequence And the number of the same statistical time period in the sequence of the second statistical time period; and if the number of the same statistical time period is higher than the preset value, the count value in the statistical period and the switch record The count value is combined to obtain a new switch record. If the number of the same statistical time period before the sort is less than or equal to the preset value, the count value in the statistical period is recorded to replace the count value in the switch record to obtain New switch record.

Optionally, the apparatus further includes: a state detecting module configured to detect an operating state of the nitrogen generating device of the refrigerator, and acquire a running time of the refrigerator when the nitrogen generating device is turned off.

Optionally, the nitrogen control module is further configured to: determine a difference between the nitrogen detection concentration and the nitrogen concentration in the sealed space when the time from the running time to the starting point of the time period is greater than the second preset time threshold Whether it is greater than the first preset concentration value, and when the determination result is yes, controlling the nitrogen generator to be turned on, wherein the second preset time threshold is greater than the first preset time threshold; the time from the running time to the starting point of the time period is less than Or, in the case of the second preset time threshold, the step of determining whether the running time is within the time period or whether the running time to the starting point of the time period is less than the first preset time threshold; in the running time to the time period If the time of the starting point is less than the second preset time threshold but greater than the first preset time threshold, it is determined whether the difference between the nitrogen detecting concentration and the nitrogen set concentration is greater than the second preset concentration value, and the judgment result is And controlling the nitrogen generator to be turned on, wherein the second preset concentration value is greater than the first preset concentration value.

The method and apparatus for controlling nitrogen production of a refrigerator according to the present invention, wherein a sealed space is provided inside a storage compartment of the refrigerator, and the refrigerator is provided with a nitrogen generating device for supplying nitrogen to the sealed space, and the nitrogen control method of the refrigerator includes: Obtaining a time period in which the number of times the sealed space is opened exceeds a preset threshold and a running time of the refrigerator; determining whether the running time is within a time period or whether the time from the running time to the starting point of the time period is less than a first preset time threshold, and If the result of the determination is yes, the nitrogen-making device of the refrigerator is prohibited from being turned on until the end of the time period, and the opening time of the nitrogen-making device of the refrigerator is controlled to avoid opening the nitrogen-producing device when the user opens the sealed space frequently or near the time period, effectively Preventing the loss of nitrogen in the sealed space and reducing the energy consumption of the refrigerator. The nitrogen control method of the refrigerator is more intelligent and reasonable, and improves the user experience.

Further, the method and apparatus for controlling nitrogen production in a refrigerator of the present invention divides a time period into a plurality of statistical time periods, and sets a corresponding counter for each statistical time period; detects a switching event of the sealed space to generate according to a switching event The time is counted in the corresponding counter. After the preset statistical period, the switch record of the sealed space is updated according to the counter value of the counter of each statistical time period, so that the switch record of the sealed space can be more accurate and more reflective. The user's usage habits make the nitrogen control method of the refrigerator more scientific, more accurately control the opening time of the nitrogen generating device, to avoid the loss of nitrogen in the sealed space, and further improve the user experience.

The above as well as other objects, advantages and features of the present invention will become apparent to those skilled in the <

DRAWINGS

Some of the present invention will be described in detail below by way of example and not limitation with reference to the accompanying drawings. Body embodiment. The same reference numbers in the drawings identify the same or similar parts. Those skilled in the art should understand that the drawings are not necessarily drawn to scale. In the figure:

1 is a control block diagram of a refrigerator to which a nitrogen control device for a refrigerator is applied, according to an embodiment of the present invention;

2 is a schematic block diagram of a nitrogen control device for a refrigerator according to an embodiment of the present invention;

3 is a schematic block diagram of a nitrogen control device for a refrigerator according to another embodiment of the present invention;

4 is a schematic diagram of a nitrogen production control method of a refrigerator according to an embodiment of the present invention;

FIG. 5 is a detailed flowchart of a nitrogen control method of a refrigerator according to another embodiment of the present invention.

detailed description

The embodiment firstly provides a nitrogen control device for a refrigerator, which can control the opening time of the nitrogen generating device that supplies nitrogen to the sealed space of the refrigerator, and avoid opening the nitrogen generating device when the user opens the sealed space frequently or near the time period. It effectively prevents the loss of nitrogen in the sealed space and reduces the energy consumption of the refrigerator. 1 is a control block diagram of a refrigerator to which a nitrogen control apparatus 100 for a refrigerator is applied, in which a storage space is provided inside a storage compartment of a refrigerator, and a refrigerator is provided with nitrogen for supplying nitrogen to a sealed space. Device 102. As shown, the control portion of the refrigerator may include a power source 101, a nitrogen generator 102, a display panel 103, a sealed space switch 104, and a space concentration sensor 105.

Among them, the power source 101 is configured to supply power to the nitrogen-making control device 100 of the refrigerator. The nitrogen generator 102 is used to supply nitrogen to the sealed space of the refrigerator to increase the nitrogen concentration of the sealed space of the refrigerator. The nitrogen generator 102 can include an air compressor 112 and a solenoid valve 122, wherein the air compressor 122 can compress air to the molecular sieve to separate nitrogen, and then feed the nitrogen into the sealed space; the solenoid valve 122 can control the amount of nitrogen entering the sealed space. . The display panel 103 can be used to display operational information of the refrigerator. The sealed space switch 104 can be used to detect the switching state of the sealed space, and when the sealed space is not closed for a long time, an alarm message can be issued to remind the user to close the sealed space. The space concentration sensor 105 is configured to obtain the nitrogen gas detection concentration of the sealed space to determine the difference between the nitrogen gas detection concentration and the nitrogen gas concentration, and thereby determine the nitrogen concentration state inside the sealed space.

2 is a schematic block diagram of a nitrogen-making control device 100 for a refrigerator according to an embodiment of the present invention. As shown, the nitrogen-making control device 100 of the refrigerator may generally include a time period acquisition module 10, a time acquisition module 20, and a system. Nitrogen control module 30.

In the above module, the time period obtaining module 10 can be configured to obtain the sealed space of the refrigerator. When the number of times exceeds the preset threshold, the number of times the refrigerator seal space is opened is counted according to the switch record of the sealed space. For example, from the switch records of the sealed space last month, it is concluded that the three times of the number of times the sealed space is opened from high to low and the corresponding opening times are: 18:00 to 18:20, 26 times; 18: 20 to 18:40, 23 times; 08:00 to 08:20, 20 times, if the preset threshold is 22 times, the eligible time periods are: 8:00 to 18:20 and 18:20 to 18: 40. It can be considered that these two time periods are the time periods during which the user frequently opens the sealed space. The value of the preset threshold can be set according to the specific use environment and the control target. The above specific values are only examples.

The time acquisition module 20 can be configured to obtain the runtime of the refrigerator.

The nitrogen-cooling control module 30 can be configured to determine whether the running time is within the time period or the time from the running time to the starting point of the time period is less than the first preset time threshold. If any of the above determination results is yes, the system of the refrigerator is prohibited. The nitrogen unit 102 is turned on until the end of the time period. For example, the time period when the number of times the sealed space is opened exceeds the preset threshold is 12:00 to 12:20 every day, and the running time of the refrigerator is 12:10. Since the running time is 12:10, the time is from 12:00 to 12:20. Therefore, the nitrogen generator 102 of the refrigerator is prohibited from being turned on until the end of the time period is 12:20, so as to prevent the nitrogen generating device 102 from being opened when the user opens the sealed space frequently or close to the time period, thereby effectively preventing nitrogen loss in the sealed space and reducing the refrigerator. Energy consumption.

In the nitrogen control apparatus 100 of the refrigerator of the present embodiment, the inside of the storage compartment of the refrigerator is provided with a sealed space, and the refrigerator is provided with a nitrogen generating device for supplying nitrogen to the sealed space, and the nitrogen generating control device 100 of the refrigerator passes Obtaining a time period in which the number of times the sealed space is opened exceeds a preset threshold and a running time of the refrigerator; determining whether the running time is within a time period or whether the time from the running time to the starting point of the time period is less than a first preset time threshold, and If the result of the determination is yes, the nitrogen-making device of the refrigerator is prohibited from being turned on until the end of the time period, and the opening time of the nitrogen-making device of the refrigerator is controlled to avoid opening the nitrogen-producing device when the user opens the sealed space frequently or near the time period, effectively Preventing the loss of nitrogen in the sealed space and reducing the energy consumption of the refrigerator. The nitrogen control method of the refrigerator is more intelligent and reasonable, and improves the user experience.

3 is a schematic block diagram of a nitrogen-making control device 100 for a refrigerator according to another embodiment of the present invention. On the basis of the previous embodiment, the nitrogen-making control device 100 of the refrigerator may further include a space detecting module 40, a counting module 50, The update module 60 and the status detection module 70 are recorded.

The space detecting module 40 may be configured to detect a switching event of the sealed space, and may detect a switching event of the sealed space by detecting an opening and closing signal of the sealed space.

The counting module 50 can be configured to divide the timing period into a plurality of statistical time periods, and for each The corresponding time counter is set in the statistical time period, and is counted in the corresponding counter according to the time when the switching event occurs. The timing period can be one day or one week. For example, when the time period is one day, 72 statistical time periods can be set in units of 20 minutes per day, respectively: 00:00 to 00:20, 00:20 to 00:40, ..., 23:20 to 23 : 40, 23:40 to 00:00. Set the corresponding counter for each statistical time period, that is, set a total of 72 counters. The count is performed in the corresponding counter according to the time when the switch event occurs. For example, when the switch event occurs at 08:10, the count in the counter corresponding to the time period from 08:00 to 08:20 is incremented by one. For example, when the time period is one week, 504 statistical time periods can be set in units of 20 minutes per week, respectively: Monday 00:00 to 00:20, 00:20 to 00:40, 23:20 to 23:40, 23:40 to 00:00; ...; Sunday 00:00 to 00:20, 00:20 to 00:40...23:20 to 23:40, 23:40 to 00:00. A corresponding counter is set for each statistical time period, that is, a total of 504 counters are set. The count is performed in the corresponding counter according to the time when the switch event occurs. For example, the time when the switch event occurs is 08:10 on Wednesday, and the count in the counter corresponding to the time period from 08:00 to 08:20 on Wednesday is incremented by one. Since Saturday and Sunday are rest days, the number of times users open the sealed space may increase compared with the working day. The number of times the user opens the sealed space at the same time on weekends and working days may vary greatly. Therefore, the time period is one week, which can be more Accurately record the user's habit of using the refrigerator to seal the space.

The record update module 60 may be configured to update the switch record of the sealed space according to the count value of the counter of each statistical time period after a preset statistical period, wherein each statistical period includes a preset number of time periods. For example, the preset statistical period may be one month, and the timing period is one day, and each statistical period includes 30 timing periods; for example, the preset statistical period is four weeks, and the timing period is one week, and each statistical period includes four. Timing period.

The record update module 60 may be further configured to: determine whether the number of time periods in which the switch event occurs in the statistical period is less than a preset time period threshold; and if not, set the count value in the statistical period to be valid, and use the statistical period The count value in the update updates the switch record, and if so, the count value in the statistical period is set to invalid, and the previous switch record is retained. For example, the statistical period is one month, and the counting period is one day. If the number of days in which the switching event occurs within this month is 10 days, less than the preset timing period threshold of 15 days, the count value in this month is invalidated and retained. Month's switch record. If the number of days when the switch event occurs within this month is 29 days, which is greater than the preset time period threshold of 15 days, the count value in this month is set to be valid, and the switch record of the previous month is updated by the count value in this month. . The above timing period and the length of the statistical period, the statistical period including the preset number of the timing period, and the preset counting period threshold value can be performed according to the specific use environment and the control target. For the settings, the above specific values are merely illustrative.

The record update module 60 may be further configured to: sort each statistical time period in the statistical period according to the count value from high to low to obtain a first statistical time period sequence; and set each statistical time period in the switch record according to the count value. Go to a low ordering to obtain a second statistical time period sequence; match the first statistical time period sequence and the second statistical time period sequence in the second statistical time period sequence to determine the first statistical time period sequence and the first The number of the same statistical time period in the second statistical time period sequence; and if the number of the same statistical time period in the previous ranking exceeds the preset value, the count value in the statistical period and the count value in the switch record Perform a merge process to obtain a new switch record. If the number of the same statistical time period before the sort is less than or equal to the preset value, replace the count value in the statistical period with the count value in the switch record to obtain a new switch. recording.

For example, the statistical period is one month, and the counting period is one day. Each statistical time period in the current month is sorted according to the count value from high to low, and the sequence of the first statistical time period is obtained as follows: 08:00 to 08:20, 18: 00 to 18:20, 12:00 to 12:20, 18:20 to 18:40, 08:20 to 08:40, 19:00 to 19:20, 12:20 to 12:40, 18:40 to 19:00, 12:40 to 13:00, 20:00 to 20:20..., sorting the statistical time periods in the last month's switch records according to the count value from high to low, and obtaining the second statistical time period sequence as follows : 08:00 to 08:20, 18:20 to 18:40, 08:20 to 08:40, 20:40 to 21:00, 08:40 to 09:00, 20:00 to 20:20, 18 :00 to 18:20, 12:00 to 12:20, 19:00 to 19:20, 12:20 to 12:40..., due to the ordering of the first statistical time period sequence and the second statistical time period sequence The same number of the first 10 statistical time periods is 8 and exceeds the preset value of 6. It is considered that the user's habit of opening the sealed space is not changed much, so the count value in this month can be recorded in the previous month. The count values are combined to obtain a new switch record. Specifically, for example, the count value of the time period from 08:00 to 08:20 in this month is 24, and the count value of the time period from 08:00 to 08:20 in the last month's switch record is 26, and the calculation is (24+26)/2. At 25, the count value of 08:00 to 08:20 can be recorded as a new switch. If the same number of the first 10 statistical time segments in the sequence of the first statistical time period and the second statistical time period is 3, which is less than the preset value of 6, the user can think that the customary change of opening the sealed space is Larger, you can replace the count value in this switch with the count value in the switch record to get a new switch record.

The state detecting module 70 may be configured to detect an operating state of the nitrogen generating apparatus 102 of the refrigerator and acquire an operating time of the refrigerator with the nitrogen generating apparatus 102 turned off.

The nitrogen production control module 30 in this embodiment may be further configured to: determine the nitrogen detection in the sealed space when the time from the running time to the starting point of the time period is greater than the second preset time threshold. Whether the difference between the concentration and the nitrogen concentration is greater than the first preset concentration value, and when the determination result is yes, controlling the nitrogen generator 102 to be turned on, wherein the second preset time threshold is greater than the first preset time threshold; If the time from the time point to the start time of the time period is less than or equal to the second preset time threshold, whether the time for determining whether the running time is within the time period or the running time to the starting point of the time period is less than the first preset time threshold is performed. The step of determining whether the difference between the nitrogen detection concentration and the nitrogen set concentration is greater than the second pre-preparation when the time from the running time to the start point of the time period is less than the second preset time threshold but greater than the first preset time threshold The concentration value is set, and when the determination result is YES, the nitrogen generator 102 is controlled to be turned on, wherein the second preset concentration value is greater than the first preset concentration value.

For example, if the statistical period is one month and the time period is one day, the time period in which the sealed space is opened more than the preset threshold is 12:00 to 12:20 every day, if the running time of the refrigerator is 09:00, due to the running time 09: 00 to the starting point of the time period 12:00 is 3 hours, greater than the second preset time threshold of 2 hours, and the difference ΔV between the nitrogen detection concentration 85% in the sealed space and the nitrogen set concentration 90% is 5%. , which is greater than the first preset concentration value of 3%, so that the nitrogen generator 102 is controlled to be turned on. Since the operation time is much earlier than the time period during which the user frequently opens the sealed space, the nitrogen concentration in the sealed space is strictly required, as long as the sealed space is The difference ΔV between the nitrogen detection concentration and the nitrogen concentration is greater than the first preset concentration value, and it is considered that the nitrogen concentration in the sealed space needs to be increased, and it is necessary to control the nitrogen generator 102 to open, and simultaneously raise the nitrogen in the sealed space. Concentration, to avoid the effect of storage due to low nitrogen concentration.

If the running time of the refrigerator is 11:30, the time from the running time 11:30 to the starting point of the time period 12:00 is 30 minutes, and the second preset time threshold is less than 2 hours, so that the running time is 11:30 to the time. The starting point of the segment at 12:00 is 30 minutes, which is less than the first preset time threshold of 1 hour. Therefore, it is considered that the user is about to open the sealed space. To avoid nitrogen loss after nitrogen production by the nitrogen generator 102, the nitrogen production of the refrigerator should be prohibited. Device 102 is turned on.

If the running time of the refrigerator is 10:30, the time from the running time of 10:30 to the starting point of the time period of 12:00 is 1.5 hours, less than the second preset time threshold of 2 hours but greater than the first preset time threshold of 1 hour. , judging that the difference ΔV between the nitrogen detection concentration 84% and the nitrogen concentration concentration in the sealed space is 6%, which is greater than 5% of the second preset concentration value, so that the nitrogen generator 102 is controlled to be turned on, because the operation time is away from the user. The time period for frequently opening the sealed space is relatively close, so that the nitrogen concentration in the sealed space is relatively loose, and the difference ΔV between the nitrogen detection concentration and the nitrogen set concentration in the sealed space is greater than the second preset concentration value, and the seal is considered to be sealed. The concentration of nitrogen in the space needs to be increased, and the nitrogen generator 102 needs to be turned on.

It is to be noted that all the above numerical values are merely illustrative and are not intended to limit the invention.

Further, the control device 100 for nitrogen production of the refrigerator of the present embodiment divides the counting period into a plurality of statistical time periods, and sets a corresponding counter for each statistical time period; detects a switching event of the sealed space to generate according to the switching event. The time is counted in the corresponding counter. After the preset statistical period, the switch record of the sealed space is updated according to the counter value of the counter of each statistical time period, so that the switch record of the sealed space can be more accurate and more reflective. The user's usage habits make the nitrogen control method of the refrigerator more scientific, more accurately control the opening time of the nitrogen generating device, to avoid the loss of nitrogen in the sealed space, and further improve the user experience.

4 is a schematic diagram of a nitrogen control method of a refrigerator according to an embodiment of the present invention, and the nitrogen control method of the refrigerator can be performed by the nitrogen control device 100 of the refrigerator of any of the above embodiments. As shown in the figure, the nitrogen control method of the refrigerator sequentially performs the following steps:

Step S402, obtaining a time period in which the number of times the sealed space is opened exceeds a preset threshold;

Step S404, obtaining a running time of the refrigerator;

In step S406, it is determined whether the running time is within the time period or the time from the running time to the starting point of the time period is less than the first preset time threshold. If any of the above determination results is yes, the nitrogen generating device 102 of the refrigerator is prohibited from being turned on until time. The paragraph ends.

In the above steps, the number of times the sealed space is opened in step S402 can be obtained according to the switch record of the sealed space.

In the nitrogen production control method of the refrigerator of the present embodiment, the inside of the storage compartment of the refrigerator is provided with a sealed space, and the refrigerator is provided with a nitrogen generating device for supplying nitrogen to the sealed space, and the nitrogen control method of the refrigerator includes: obtaining a period of time when the number of times the sealed space is opened exceeds a preset threshold and a running time of the refrigerator; determining whether the running time is within a time period or a running time to a starting point of the time period Whether the time is less than the first preset time threshold, and if any of the above determination results is yes, the nitrogen generator of the refrigerator is prohibited from being turned on until the end of the time period, and the opening time of the nitrogen generator of the refrigerator is controlled to prevent the user from opening the sealed space. The nitrogen generator is turned on at frequent intervals or near the time to effectively prevent nitrogen loss in the sealed space and reduce the energy consumption of the refrigerator. The nitrogen control method of the refrigerator is more intelligent and reasonable, and the user experience is improved.

FIG. 5 is a detailed flowchart of a nitrogen control method of a refrigerator according to another embodiment of the present invention. The nitrogen production control method of the refrigerator can be performed by the nitrogen production control device 100 of the refrigerator of any of the above embodiments. As shown in the figure, the nitrogen production control method of the refrigerator includes:

Step S502, obtaining a time period in which the number of times the sealed space is opened exceeds a preset threshold;

Step S504, detecting whether the operating state of the nitrogen generating device 102 is off, and if so, executing step S506, and if not, executing step S508;

Step S506, obtaining the running time of the refrigerator and performing step S510;

Step S508, determining whether the difference ΔV between the nitrogen gas detection concentration and the nitrogen gas concentration in the sealed space is smaller than the first preset concentration value V1, that is, determining whether the refrigerator reaches the preset stop nitrogen production condition, and if yes, executing step S520; No, step S522 is performed;

Step S510, determining whether the time Δtime from the running time to the start of the time period is greater than the second preset time threshold time2, and if so, executing step S514, and if not, executing step S512;

In step S512, it is determined whether the running time is within the time period or whether the time Δtime of the running time to the starting point of the time period is less than the first preset time threshold time1. If the above arbitrary determination result is yes, step S520 is performed, and if no, step S516 is performed. ;

Step S514, it is determined whether the difference ΔV between the nitrogen detection concentration of the sealed space and the nitrogen set concentration is greater than the first preset concentration value V1, and if so, step S518 is performed, and if not, step S520 is performed;

Step S516, it is determined whether the difference ΔV between the nitrogen detection concentration and the nitrogen concentration of the sealed space is greater than the second preset concentration value V2, and if so, step S518 is performed, and if not, step S520 is performed;

Step S518, controlling the nitrogen generator 102 to be turned on;

Step S520, controlling the nitrogen generator 102 to be closed;

In step S522, the nitrogen generator 102 is kept turned on until the condition that ΔV < V1 is satisfied.

In the above step, the second preset concentration value V2 is greater than the first preset concentration value V1, and the second preset time threshold value time2 is greater than the first preset time threshold value time1.

The following describes a specific example:

First, the time period from when the sealed space is opened more than the preset threshold is 08:00 every day. 08:20, 12:00 to 12:20, 18:00 to 18:20, and then the operating state of the refrigerator nitrogen generator 102 is detected. If the nitrogen generator 102 is closed, the operating time of the refrigerator is obtained. 17:20, so the time period is 18:00 to 18:20 as a reference, because the running time is 17:20 to the starting time of the time period 18:00 is 40 minutes, less than the second preset time threshold 2 hours, continue to judge The time from the running time 17:20 to the starting point of the time period of 18:00 is 40 minutes, and less than the first preset time threshold value of 1 hour, it can be judged that the user is about to open the sealed space, so the nitrogen generating device 102 is prohibited from starting until the end of the time period 18 :20. This can effectively avoid nitrogen production when the user frequently opens the sealed space or near the time period, thereby causing nitrogen leakage and increasing the energy consumption of the refrigerator. It should be noted that the above specific values are merely examples and are not intended to limit the invention.

In the nitrogen production control method of the refrigerator of the present embodiment, the inside of the storage compartment of the refrigerator is provided with a sealed space, and the refrigerator is provided with a nitrogen generating device for supplying nitrogen to the sealed space, and the nitrogen control method of the refrigerator includes: obtaining a time period in which the number of times the sealed space is opened exceeds a preset threshold and a running time of the refrigerator; determining whether the running time is within the time period or whether the time from the running time to the starting point of the time period is less than the first preset time threshold, and in any of the above If the judgment result is yes, the nitrogen generator of the refrigerator is prohibited from being turned on until the end of the time period, and the opening time of the nitrogen generator of the refrigerator is controlled to prevent the nitrogen generator from being turned on when the user opens the sealed space frequently or near the time period, thereby effectively preventing the nitrogen generator from being opened. The loss of nitrogen in the sealed space reduces the energy consumption of the refrigerator, and the nitrogen control method of the refrigerator is more intelligent and reasonable, thereby improving the user experience.

Further, the method for controlling nitrogen production in the refrigerator of the embodiment divides the timing period into a plurality of statistical time periods, and sets a corresponding counter for each statistical time period; and detects a switching event of the sealed space to generate according to the switching event. The time is counted in the corresponding counter. After the preset statistical period, the switch record of the sealed space is updated according to the counter value of the counter of each statistical time period, so that the switch record of the sealed space can be more accurate and can reflect the user. The use habits make the nitrogen control method of the refrigerator more scientific, more accurately control the opening time of the nitrogen generating device, to avoid the loss of nitrogen in the sealed space, and further improve the user experience.

In this regard, it will be appreciated by those skilled in the <RTIgt;the</RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; The content directly determines or derives many other variations or modifications consistent with the principles of the invention. Therefore, the scope of the invention should be understood and construed as covering all such other modifications or modifications.

Claims

A nitrogen production control method for a refrigerator, wherein a sealed space is provided inside a storage compartment of the refrigerator, and the refrigerator is provided with a nitrogen generating device for supplying nitrogen to the sealed space, the method comprising:

Obtaining a period of time that the number of times the sealed space is opened exceeds a preset threshold, and the number of times the sealed space is opened is calculated according to a switch record of the sealed space;

Obtaining the running time of the refrigerator;

Determining whether the running time is within the time period or whether the time from the running time to the starting point of the time period is less than a first preset time threshold. If any of the above determination results is yes, the refrigerator is prohibited. The nitrogen generator is turned on until the end of the time period.
The method of claim 1 further comprising:

Dividing the timing period into a plurality of statistical time periods, and setting corresponding counters for each of the statistical time periods;

Detecting a switch event of the sealed space to count in a corresponding counter according to a time when the switch event occurs, and after updating a preset statistical period, updating the counter according to a count value of each of the statistical time segments A switch record of the sealed space, wherein each of the statistical periods includes a predetermined number of the timing periods.
The method according to claim 2, wherein before the step of updating the switch record of the sealed space according to the count value of the counter of each of the statistical time periods, the method further comprises:

Determining whether the number of the counting periods in which the switching event occurs in the statistical period is less than a preset timing period threshold;

If not, the count value in the statistical period is set to be valid, and the switch record is updated by using the count value in the statistical period,

If so, the count value in the statistical period is set to be invalid, and the previously recorded switch record is retained.
The method of claim 3 wherein the step of updating said switch record using a count value within said statistical period comprises:

And each of the statistical time periods in the statistical period is sorted according to a count value from high to low to obtain a first statistical time period sequence;

And each of the statistical time periods in the switch record is sorted according to a count value from high to low to obtain a second statistical time period sequence;

Matching the first statistical time period sequence and the plurality of statistical time periods ranked in the second statistical time period sequence to determine the first statistical time period sequence and the second statistical time period sequence The same number of statistical time periods in the top; and

If the number of the same statistical period of the previous ranking exceeds the preset value, the count value in the statistical period is combined with the count value in the switch record to obtain a new switch record.

If the number of the same ranked statistical time period is less than or equal to the preset value, the count value record in the statistical period replaces the count value in the switch record to obtain a new switch record.
The method according to claim 1, wherein before the step of acquiring the running time of the refrigerator, the method further comprises:

The operating state of the nitrogen generating device of the refrigerator is detected, and the operating time of the refrigerator is obtained with the nitrogen generating device turned off.
The method according to claim 5, further comprising: after the step of acquiring the running time of the refrigerator:

Determining whether the time from the running time to the starting point of the time period is greater than a second preset time threshold, wherein the second preset time threshold is greater than the first preset time threshold;

If not, performing a step of determining whether the running time is within the time period or whether the time from the running time to the starting point of the time period is less than a first preset time threshold,

If yes, it is determined whether the difference between the nitrogen gas detection concentration of the sealed space and the nitrogen gas concentration is greater than the first predetermined concentration value, and when the determination result is YES, the nitrogen generator is controlled to be turned on.
The method according to claim 6, wherein, in a case that the time from the running time to the starting point of the time period is less than the second preset time threshold but greater than the first preset time threshold,

Determining whether the difference between the nitrogen gas detection concentration and the nitrogen gas concentration is greater than a second predetermined concentration value, and when the determination result is YES, controlling the nitrogen generator to be turned on, wherein the second predetermined concentration value Greater than the first predetermined concentration value.
A nitrogen control device for a refrigerator, wherein a sealed space is provided inside a storage compartment of the refrigerator, and the refrigerator is provided with a nitrogen generating device for supplying nitrogen to the sealed space, the device comprising:

The time period obtaining module is configured to obtain a time period in which the number of times that the sealed space of the refrigerator is opened exceeds a preset threshold, and the number of times the sealed space of the refrigerator is opened according to the switch record of the sealed space;

a time acquisition module configured to acquire a running time of the refrigerator;

a nitrogen control module, configured to determine whether the running time is within the time period or whether the time from the running time to the starting point of the time period is less than a first preset time threshold, if any of the above determination results is Yes, the nitrogen generator of the refrigerator is prohibited from opening until the end of the period of time.
The apparatus of claim 8 further comprising:

a space detecting module configured to detect a switching event of the sealed space;

a counting module configured to divide the timing period into a plurality of statistical time periods, and set a corresponding counter for each of the statistical time periods, and counts in the corresponding counter according to the time when the switching event occurs;

a record update module, configured to update a switch record of the sealed space according to a count value of a counter of each of the statistical time periods after a preset statistical period, wherein each of the statistical periods includes a preset number The timing period.
The apparatus of claim 9 wherein said record update module is further configured to:

Determining whether the number of the counting periods in which the switching event occurs in the statistical period is less than a preset timing period threshold;

If not, the count value in the statistical period is set to be valid, and the switch record is updated by using the count value in the statistical period,

If so, the count value in the statistical period is set to be invalid, and the previously recorded switch record is retained.
The apparatus of claim 10 wherein said record update module is further configured to:

And each of the statistical time periods in the statistical period is sorted according to a count value from high to low to obtain a first statistical time period sequence;

Sorting each of the statistical time periods in the switch record according to a count value from high to low, Obtaining a second statistical time period sequence;

Matching the first statistical time period sequence and the plurality of statistical time periods ranked in the second statistical time period sequence to determine the first statistical time period sequence and the second statistical time period sequence The same number of statistical time periods in the top; and

If the number of the same statistical period of the previous ranking exceeds the preset value, the count value in the statistical period is combined with the count value in the switch record to obtain a new switch record.

If the number of the same ranked statistical time period is less than or equal to the preset value, the count value record in the statistical period replaces the count value in the switch record to obtain a new switch record.
The apparatus of claim 8 further comprising:

The state detecting module is configured to detect an operating state of the nitrogen generating device of the refrigerator, and acquire an operating moment of the refrigerator when the nitrogen generating device is turned off.
The apparatus of claim 12 wherein said nitrogen production control module is further configured to:

In a case that the time from the running time to the starting point of the time period is greater than the second preset time threshold, determining whether the difference between the nitrogen detecting concentration and the nitrogen setting concentration in the sealed space is greater than the first preset a concentration value, and when the determination result is YES, controlling the nitrogen generator to be turned on, wherein the second preset time threshold is greater than the first preset time threshold;

In a case that the time from the running time to the starting point of the time period is less than or equal to the second preset time threshold, it is determined whether the running time is located in the time period or the running time to the time Whether the time of the starting point of the segment is less than the first preset time threshold;

Determining the nitrogen gas detection concentration and the nitrogen gas setting in a case that the time from the running time to the start point of the time period is less than the second preset time threshold but greater than the first preset time threshold Whether the difference of the concentration is greater than the second preset concentration value, and when the determination result is YES, controlling the nitrogen generator to be turned on, wherein the second preset concentration value is greater than the first preset concentration value.