CN113465263B - Refrigerating and freezing device and control method thereof - Google Patents

Refrigerating and freezing device and control method thereof Download PDF

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Publication number
CN113465263B
CN113465263B CN202010245943.6A CN202010245943A CN113465263B CN 113465263 B CN113465263 B CN 113465263B CN 202010245943 A CN202010245943 A CN 202010245943A CN 113465263 B CN113465263 B CN 113465263B
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China
Prior art keywords
storage space
temperature
area
same
wall part
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CN202010245943.6A
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Chinese (zh)
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CN113465263A (en
Inventor
李涛
苏翔飞
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Qingdao Haier Refrigerator Co Ltd
Haier Smart Home Co Ltd
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Qingdao Haier Refrigerator Co Ltd
Haier Smart Home Co Ltd
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Application filed by Qingdao Haier Refrigerator Co Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Refrigerator Co Ltd
Priority to CN202010245943.6A priority Critical patent/CN113465263B/en
Priority to PCT/CN2021/078915 priority patent/WO2021196964A1/en
Publication of CN113465263A publication Critical patent/CN113465263A/en
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Publication of CN113465263B publication Critical patent/CN113465263B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/003—Arrangement or mounting of control or safety devices for movable devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/005—Mounting of control devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2500/00—Problems to be solved
    • F25D2500/06—Stock management
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2600/00—Control issues
    • F25D2600/06—Controlling according to a predetermined profile
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/02—Sensors detecting door opening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/12—Sensors measuring the inside temperature
    • F25D2700/123—Sensors measuring the inside temperature more than one sensor measuring the inside temperature in a compartment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/16—Sensors measuring the temperature of products

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

The invention provides a refrigerating and freezing device and a control method thereof, wherein the control method comprises the steps of detecting an event that a storage space is opened and closed; detecting the condition that new articles are put into the same storage area of the storage space in the process of opening and closing the storage space, and detecting the temperature change condition of the storage space caused by the entering of outside air in the process of opening and closing the storage space; the opportunity of supplying cold air to the storing space is determined according to the condition that new articles are put into the same storing area of the storing space and the temperature change condition of the storing space, and the storing space can be cooled as soon as possible when refrigeration is needed.

Description

Refrigerating and freezing device and control method thereof
Technical Field
The invention relates to the technical field of refrigeration and freezing storage, in particular to a refrigeration and freezing device and a control method thereof.
Background
At present, a refrigeration and freezing device, such as a refrigerator, determines a refrigeration opportunity according to the temperature change in a room for refrigeration, for example, when the temperature reaches a starting point, the device starts refrigeration, and when the temperature does not reach the starting point, the device does not refrigerate, so that the newly-placed food material cannot be cooled quickly in time, the problems of freshness reduction, nutrition loss and the like of the food material may be caused, and the preservation of the food material is influenced.
Disclosure of Invention
It is an object of the present invention to provide a refrigerating and freezing apparatus and a control method thereof which solve at least the above problems.
A further object of the present invention is to rationally control the timing of supplying cold air to the storage space while providing a suitable storage temperature for the new food material and the original food material.
According to an aspect of the present invention, there is provided a method of controlling a refrigeration-freezing apparatus, comprising:
detecting an event that the storage space is opened and closed;
detecting the condition that new articles are put into the same storage area of the storage space in the process of opening and closing the storage space, and detecting the temperature change condition of the storage space caused by the entering of outside air in the process of opening and closing the storage space;
and determining the time for supplying cold air to the storage space according to the condition that new articles are put into the same storage area of the storage space and the temperature change condition of the storage space.
Optionally, the step of detecting that a new article is put into the same storage area of the storage space in the process of opening and closing the storage space, and detecting a temperature change of the storage space caused by the entry of outside air in the process of opening and closing the storage space comprises:
when the storage space is opened and at a first preset time after the storage space is closed, respectively detecting the temperature of the articles stored in the same storage area of the storage space so as to respectively obtain a first temperature and a second temperature of the articles in the same storage area;
respectively detecting the temperature of the same wall part area of the storage space when the storage space is opened and at a first preset time after the storage space is closed so as to respectively obtain a first wall part temperature and a second wall part temperature of the same wall part area;
the step of determining the time for supplying cold air to the storage space according to the condition that new articles are put into the same storage area of the storage space and the temperature change condition of the storage space comprises the following steps:
calculating the difference between the second temperature of the object and the first temperature of the object in the same storage area, and calculating the difference between the second temperature of the wall part and the first temperature of the wall part in the same wall part area;
and if the difference between the second temperature of the articles in the same storage area and the first temperature of the articles is equal to or greater than a first preset temperature threshold value, and the difference between the second temperature of the wall part and the first temperature of the wall part is equal to or greater than a second preset temperature threshold value, supplying cold air to the storage space for a first preset time after the storage space is closed.
Optionally, the step of determining the time for supplying cold air to the storage space according to the condition that a new article is put into the same storage area of the storage space and the temperature change condition of the storage space further comprises:
if the difference between the second temperature of the object in the same storage area and the first temperature of the object is smaller than a third preset temperature threshold value, or if the difference between the second temperature of the object in the same storage area and the first temperature of the object is larger than the first preset temperature threshold value and the difference between the second temperature of the wall part in the same wall part area and the first temperature of the wall part is smaller than the second preset temperature threshold value;
after the storage space is closed for a first preset time, continuously detecting the temperature of the same wall part area of the storage space to obtain a third wall part temperature of the same wall part area, and supplying cold air to the storage space when the third wall part temperature is greater than a fourth preset temperature threshold;
the third preset temperature threshold is smaller than the first preset temperature threshold.
Optionally, the control method further includes:
recording the time when the storage space is opened in the process of opening the storage space;
if the time for opening the storage space is longer than a second preset time, cold air is supplied to the storage space when the storage space is closed;
and if the time for opening the storage space is equal to or less than the second preset time, determining the time for supplying cold air to the storage space according to the condition that new articles are put into the same storage area of the storage space and the temperature change condition of the storage space.
According to another aspect of the present invention, there is also provided a refrigeration and freezing apparatus comprising:
a case body including a storage space;
an open/close detector configured to be controlled to detect an event that the storage space is opened or closed;
a new article insertion condition detecting unit configured to detect that a new article is inserted into the same storage area of the storage space while the storage space is opened and closed;
the temperature change condition detection component of the storage space is configured to detect the temperature change condition of the storage space caused by the entering of outside air in the opening and closing process of the storage space;
a controller comprising a memory and a processor, the memory having stored therein a computer program for implementing a control method according to any of the preceding when executed by the processor.
Optionally, the new article putting condition detecting component is a first infrared sensor configured to detect the temperatures of the articles stored in the same storage area of the storage space respectively when the storage space is opened and at a first preset time after the storage space is closed, so as to obtain a first article temperature and a second article temperature of the same storage area respectively;
the storage space temperature change condition detection component is a second infrared sensor and is configured to respectively detect the temperatures of the same wall part area of the storage space when the storage space is opened and at a first preset time after the storage space is closed so as to respectively obtain a first wall part temperature and a second wall part temperature of the same wall part area.
Optionally, the second infrared sensor is further configured to:
if the difference between the second temperature of the object in the same storage area and the first temperature of the object is smaller than a third preset temperature threshold value, or if the difference between the second temperature of the object in the same storage area and the first temperature of the object is larger than the first preset temperature threshold value and the difference between the second temperature of the wall part in the same wall part area and the first temperature of the wall part is smaller than a second preset temperature threshold value;
and after a first preset time after the storage space is closed, continuously detecting the temperature of the same wall part area of the storage space to obtain a third wall part temperature of the same wall part area.
Optionally, the first infrared sensor is arranged above one of the wall parts of the storage space and is configured to receive infrared rays radiated from the whole storage area of the storage space for storing articles;
the second infrared sensor is arranged at a position, close to the front or the rear, of one side wall of the storage space and is configured to receive infrared rays radiated by an area, close to the side wall, of the front wall of the storage space or infrared rays radiated by an area, close to the side wall, of the rear wall of the storage space.
The refrigerating and freezing device and the control method thereof can determine the time for supplying cold air to the storage space according to the condition that new articles are put into the storage space and the temperature change condition of the storage space, and can ensure that the storage space can be cooled as soon as possible when refrigeration is needed.
Further, according to the refrigerating and freezing device and the control method thereof, when the storage space is judged to contain new articles and the influence of the external environment on the temperature of the original articles in the storage space meets a certain degree, cold air is supplied to the storage space, the temperature of the storage space is reduced, the new articles and the original articles are cooled in time, the freshness of the new articles and the storage period of the original articles are guaranteed, and the intelligence of the refrigerating and freezing device is improved.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic structural view of a refrigeration freezer according to one embodiment of the invention;
fig. 2 is a block diagram of a refrigeration freezer apparatus according to one embodiment of the invention;
FIG. 3 is a schematic block diagram of a compartment of a refrigeration freezer in accordance with one embodiment of the invention, showing the area where a first infrared sensor receives infrared radiation;
FIG. 4 is a schematic block diagram of a compartment of a refrigeration freezer in accordance with one embodiment of the invention, showing the area where a second infrared sensor receives infrared radiation;
fig. 5 is a schematic diagram of a method of controlling a refrigeration chiller according to an embodiment of the present invention; and
fig. 6 is a flow chart of an implementation of a control method of a refrigerating and freezing apparatus applied to a refrigerator according to an embodiment of the invention.
Detailed Description
The present embodiment provides a refrigeration and freezing apparatus 100, and the refrigeration and freezing apparatus 100 of the present embodiment is described in detail below with reference to fig. 1 to 4.
The refrigerating and freezing apparatus 100 of the present embodiment may be a storage device having refrigerating and freezing functions such as a refrigerator and a freezer, and includes a box body, an opening/closing detector 103, a new article placement condition detection unit, a storage space temperature change condition detection unit, and a controller 120.
The cabinet includes a storage space 110, and the storage space 110 may be any one of the compartments of the refrigerating and freezing device 100, for example, a refrigerating compartment, or a sub-space of the compartment, for example, a drawer which can move back and forth, the compartment having an accommodating space for accommodating the drawer, the accommodating space having a forward facing opening, a front side of the drawer having an end plate for closing the opening, and the drawer being operable to move back and forth to open or close the storage space 110.
The open/close detector 103 is configured to be controlled to detect an event that the storage space 110 is opened or closed, so as to send corresponding signals to the controller 120 when the storage space 110 is opened or closed, respectively, so as to facilitate the controller 120 to issue corresponding control instructions. The opening/closing detector 103 may detect whether the storage space 110 is opened or closed using a hall device, etc., and when a drawer is used as the storage space 110, the opening/closing detector 103 may be respectively disposed on an end plate of the drawer and a corresponding receiving space.
The new article insertion condition detecting component is configured to detect that a new article is inserted into the same storage area of the storage space 110 during the process of opening and closing the storage space 110, and provide a reference basis for the controller 120 to determine whether to insert the new article. The storage space 110 temperature variation condition detection part is configured to detect the temperature variation condition of the storage space 110 caused by the entrance of the external air in the process of opening and closing the storage space 110, and provide data for the controller 120 to the temperature variation amplitude of the storage space 110. The controller 120 includes a memory 122 and a processor 121, wherein a computer program 1221 is stored in the memory 122, and the computer program 1221 is used for implementing the control method described below when executed by the processor 121.
In one embodiment, the computer program 1221, when executed by the processor 121, performs the determination of the timing of the supply of cold air to the storage space 110 depending on the fact that new items are placed in the same storage area of the storage space 110 and the temperature change of the storage space 110.
The refrigerating and freezing device 100 of the present embodiment determines the time for supplying cold air to the storage space 110 according to the situation of putting new articles into the storage space 110 and the temperature change situation of the storage space 110, and can ensure that the storage space 110 can be cooled as soon as possible when cooling is needed.
In some embodiments, the new article insertion condition detecting component is a first infrared sensor 101 configured to detect the temperature of the articles stored in the same storage area of the storage space 110 when the storage space 110 is opened and a first preset time after the storage space is closed, respectively, so as to obtain a first temperature of the articles and a second temperature of the articles in the same storage area, respectively.
The storage space temperature change condition detection means is a second infrared sensor 102 configured to detect the temperatures of the same wall region of the storage space 110 when the storage space 110 is opened and at a first preset time after being closed, respectively, to obtain a wall first temperature and a wall second temperature of the same wall region, respectively.
In the embodiment, the influence degree of the storage space 110 on the temperature of the storage space 110 due to the entering of the external hot air in the opening process of the storage space 110 is reflected by the temperature of the wall portion of the storage space 110, and compared with the prior art in which the temperature of the air in the storage space 110 is detected as a reference value, the influence degree of the entering of the external hot air on the temperature of the original articles in the storage space 110 can be more accurately reflected.
The computer program 1221 performs the following steps when executed by the processor 121:
calculating a difference value between a second temperature of the articles in the same storage area and a first temperature of the articles, and calculating a difference value between a second temperature of the wall part and a first temperature of the wall part in the same wall part area, and if the difference value between the second temperature of the articles in the same storage area and the first temperature of the articles is equal to or greater than a first preset temperature threshold value, and the difference value between the second temperature of the wall part and the first temperature of the wall part is equal to or greater than a second preset temperature threshold value, supplying cold air to the storage space 110 for a first preset time after the storage space 110 is closed.
When the storage space 110 is opened and after the storage space is closed, the temperature change of the articles in the same storage area is influenced by the entering of outside air, on one hand, the influence of the entering of the outside air on the temperature of the articles is relatively small due to the fact that new articles are put into the storage space, on the other hand, the temperature change of the new articles relative to the original articles in the storage space 110 is large, and whether new articles are put into the storage space or not can be judged through the temperature change degree of the articles in the same storage area by reasonably setting a first preset temperature threshold value. When the storage space 110 is opened and closed, the temperature change of the same wall region of the storage space 110 can directly and accurately reflect the influence of the entering of the outside air on the original temperature of the storage space 110, so that when the temperature change degree of the same wall region is larger, the fact that the entering of the outside air is more and the influence on the original temperature is larger is indicated. So, when judging that storing space 110 has new article to put into and external environment to satisfy the certain degree to the former article temperature influence of storing space 110, to storing space 110 supply cold air to and reduce storing space 110's temperature in time, in time to new article and former article cooling, guarantee the fresh-keeping of new article and the storage term of former article. And the problem that in the prior art, cold air is supplied to the storage space 110 only when the temperature of the storage space 110 reaches the starting point, so that fresh-keeping of new articles and timely cooling of original articles cannot be carried out in time is avoided.
The foregoing embodiment determines whether a new article is put into the storage space 110 according to the difference between the second temperature of the article in the storage space 110 and the first temperature of the article. In an alternative embodiment, the difference between the second temperature of the articles in the same storage area and the second temperature of the wall portion after the storage space 110 is closed may reflect whether a new article is placed in the storage space 110 during the opening process.
The second infrared sensor 102 is further configured to:
if the difference between the second temperature of the articles in the same storage area and the first temperature of the articles is smaller than a third preset temperature threshold, or if the difference between the second temperature of the articles in the same storage area and the first temperature of the articles is larger than the first preset temperature threshold and the difference between the second temperature of the wall part of the same wall part area and the first temperature of the wall part is smaller than the second preset temperature threshold;
after the first preset time after the storage space 110 is closed, the temperature of the same wall part area of the storage space 110 is continuously detected, and a third wall part temperature of the same wall part area is obtained.
The computer program 1221 may also perform the following steps when executed by the processor 121:
when the third temperature of the wall portion is greater than the fourth preset temperature threshold, cool air is supplied to the storage space 110.
That is, when the temperature of the articles in the same storage region of the storage space 110 does not change much during the opening of the storage space 110, or when the temperature of the same wall region of the storage space 110 changes relatively little although the temperature of the articles in the same storage region changes relatively much, the second infrared sensor 102 needs to continuously detect the temperature of the same wall region of the storage space 110, and supply cool air to the storage space 110 when the temperature of the wall region rises to a certain temperature. Obviously, the third preset temperature threshold should be smaller than the first preset temperature threshold.
When the storage space 110 is opened and closed, if the temperature change of the articles in the same storage area is not large, it is indicated that no new articles are put in, and the influence of the outside air entering on the temperature of the original articles in the storage space 110 is relatively small, at the moment, cold air does not need to be supplied to the storage space 110 immediately, but when the temperature of the storage space 110 rises to a certain degree, the cold air is supplied to the storage space 110, so that the storage space 110 can be cooled in time, and the compressor can be prevented from being started and stopped frequently.
The same storage area of the embodiment may be the entire area of the storage space 110 capable of accommodating the articles, and the first infrared sensor 101 may receive the infrared rays radiated from the entire area to monitor the temperature change of the articles stored in the area. Generally, the output value of the infrared sensor is an average temperature value of the area it monitors.
The first infrared sensor 101 may be disposed above one of the wall portions of the storage space 110, and configured to receive infrared rays radiated from the entire storage area of the storage space 110 for storing the articles, so as to monitor a temperature change condition of the articles stored in the entire storage area. For example, if the storage space 110 is a drawer, the first infrared sensor 101 may be disposed on a rear wall of the accommodating space where the drawer is located and above the drawer.
The second infrared sensor 102 may be disposed at a position near a front or a rear of one of the sidewalls of the storage space 110, and configured to receive infrared rays radiated from a region of the front wall of the storage space 110 near the sidewall or a region of the rear wall of the storage space 110 near the sidewall. For example, the second infrared sensor 102 is disposed at a position rearward of one side wall of the storage space 110, and is configured to receive infrared rays radiated from a region of the rear wall of the storage space 110 close to the side wall. The arrangement and the receiving area range of the second infrared sensor 102 can prevent the articles stored in the storage space 110 from being blocked.
In another embodiment, as shown in fig. 3, the same storage area may include a first area C and a second area a, which constitute the entire area of the storage space 110 that can accommodate the articles. The first infrared sensor 101 may be configured to receive infrared rays radiated from the stored items in the first region C, and the second infrared sensor 102 may be configured to receive infrared rays radiated from the stored items in the second region a and infrared rays radiated from one wall region B of the storage space 110. That is, the first infrared sensor 101 and the second infrared sensor 102 are collectively configured to detect the temperature of the articles in the entire region of the storage space 110 in which the articles can be accommodated, and the second infrared sensor 102 is also configured to detect the temperature of the same wall region of the storage space 110.
In other words, the first infrared sensor 101 and the second infrared sensor 102 are jointly configured to respectively detect the temperature of the articles stored in the same storage area of the storage space 110 when the storage space 110 is opened and at a first preset time after the storage space is closed, so as to respectively obtain a first temperature of the articles and a second temperature of the articles in the same storage area; wherein the first temperature of the articles in the same storage region comprises a first temperature of the articles in the first region C and a first temperature of the articles in the second region a, and the second temperature of the articles in the same storage region comprises a second temperature of the articles in the second region a and a second temperature of the articles in the second region a. And the second infrared sensor 102 is further configured to detect the temperature of the same wall region B of the storage space 110 when the storage space 110 is opened and at a first preset time after being closed, respectively, to obtain a wall first temperature and a wall second temperature of the same wall region B, respectively. This embodiment can hold the whole regional division of article with storing space 110 and be two regions, utilizes two infrared sensor to monitor the temperature variation in two regions respectively, can obtain the temperature variation in the whole region that storing space 110 can hold article equally, has avoided an infrared sensor probably to appear covering the region of disappearance, utilizes the temperature variation of one of them infrared sensor detection corresponding wall portion simultaneously, reduces sensor quantity.
For example, the first infrared sensor 101 is configured to detect the temperature of the articles stored in the first zone C of the storage space 110 respectively when the storage space 110 is opened and at a first preset time after being closed, so as to obtain a first temperature of the articles in the first zone C and a second temperature of the articles in the first zone C respectively; the second infrared sensor 102 is configured to detect the temperature of the second area a and the temperature of the same wall area B of the storage space 110, respectively, when the storage space 110 is opened, to obtain a first temperature of the articles of the second area a and a first temperature of the same wall area B, respectively; the second infrared sensor 102 is further configured to detect the temperature of the second area a and the temperature of the same wall area B of the storage space 110, respectively, at a first preset time after the storage space 110 is closed, so as to obtain a second temperature of the articles in the second area a and a second temperature of the same wall area B, respectively.
And the difference value between the second temperature of the articles in the same storage area and the first temperature of the articles is as follows: the difference between the second temperature of the articles in the first zone C and the first temperature of the articles in the first zone C, and the difference between the second temperature of the articles in the second zone a and the first temperature of the articles in the first zone C. When the computer program 1221 executes the control method, and involves determining the magnitude of the difference between the second temperature of the articles in the same storage area and the first temperature of the articles, and when determining whether the difference between the second temperature of the articles in the same storage area and the first temperature of the articles is greater than the first preset temperature threshold, one of the two differences is greater than the first preset temperature threshold, so as to reflect that a new article is placed in at least one of the first area C and the second area a. When the difference between the second temperature of the articles in the same storage area and the first temperature of the articles is judged to be smaller than the third preset temperature threshold, the two differences need to be smaller than the third preset temperature threshold at the same time so as to reflect that no new articles are put into the first area C and the second area A.
Based on the refrigeration and freezing apparatus 100, the present embodiment further provides a control method of the refrigeration and freezing apparatus 100, as shown in fig. 5, including:
s502, detecting an event that the storage space 110 is opened and closed;
s504, in the process that the storage space 110 is opened and closed, the condition that a new article is put in the same storage area of the storage space 110 is detected, and the temperature change condition of the storage space 110 caused by the entering of outside air in the process that the storage space 110 is opened and closed is detected;
s506, the timing of supplying the cool air to the storage space 110 is determined according to the new articles in the same storage region of the storage space 110 and the temperature change of the storage space 110.
The control method of the refrigerating and freezing device 100 of the embodiment determines the time for supplying cold air to the storage space 110 according to the condition of detecting that new articles are put into the storage space 110 and the temperature change condition of the storage space 110, and can ensure that the storage space 110 can be cooled as soon as possible when refrigeration is needed.
The storage space 110 may be filled with new articles in a variety of ways, for example, in some embodiments, pressure or weight may be used to measure the storage and determine whether the articles in the storage space 110 have changed.
In some embodiments, the insertion of a new article into the storage space 110 may be detected by a change in temperature. Specifically, the steps of detecting the situation that a new article is put into the same storage area of the storage space 110 in the process of opening and closing the storage space 110 and detecting the temperature change of the storage space 110 caused by the entering of the outside air in the process of opening and closing the storage space 110 include:
respectively detecting the temperature of the articles stored in the same storage area of the storage space 110 when the storage space 110 is opened and at a first preset time after the storage space is closed so as to respectively obtain a first temperature of the articles and a second temperature of the articles in the same storage area;
respectively detecting the temperature of the same wall part area of the storage space 110 when the storage space 110 is opened and at a first preset time after the storage space is closed so as to respectively obtain a first wall part temperature and a second wall part temperature of the same wall part area;
the step of determining the time for supplying the cold air to the storage space 110 according to the condition that the new articles are put into the same storage area of the storage space 110 and the temperature change condition of the storage space 110 includes:
calculating the difference between the second temperature of the articles in the same storage area and the first temperature of the articles, and calculating the difference between the second temperature of the wall part of the same wall part area and the first temperature of the wall part;
if the difference between the second temperature of the articles in the same storage area and the first temperature of the articles is equal to or greater than the first preset temperature threshold, and the difference between the second temperature of the wall portion and the first temperature of the wall portion is equal to or greater than the second preset temperature threshold, the cold air is supplied to the storage space 110 for a first preset time after the storage space 110 is closed.
As described above, in the present embodiment, the influence degree of the storage space 110 on the temperature of the storage space 110 due to the entrance of the external hot air in the opening process of the storage space 110 is reflected by the wall temperature of the storage space 110, and compared with the prior art in which the air temperature in the storage space 110 is detected as a reference value, the influence degree of the entrance of the external hot air on the temperature of the original articles in the storage space 110 can be more accurately reflected.
The present embodiment determines whether a new article is put in according to the temperature change degree of the articles in the same storage area when and after the storage space 110 is opened, and determines the influence degree of the outside air entering on the temperature of the original article according to the temperature change degree of the same wall area of the storage space 110. When judging that storing space 110 has new article to put into and external environment satisfies the certain degree to storing space 110 former article temperature influence, to storing space 110 supply cold air to and reduce storing space 110's temperature in time, in time to the fresh-keeping of new article and the storage term of former article, guarantee new article. And the problem that in the prior art, cold air is supplied to the storage space 110 only when the temperature of the storage space 110 reaches a starting point, so that fresh-keeping of new articles and timely cooling of original articles cannot be carried out in time is avoided.
The step of determining the time for supplying the cool air to the storage space 110 according to the condition that the new articles are put into the same storage area of the storage space 110 and the temperature change condition of the storage space 110 further includes:
if the difference between the second temperature of the articles in the same storage area and the first temperature of the articles is smaller than a third preset temperature threshold, or if the difference between the second temperature of the articles in the same storage area and the first temperature of the articles is larger than the first preset temperature threshold and the difference between the second temperature of the wall part of the same wall part area and the first temperature of the wall part is smaller than a second preset temperature threshold;
after the first preset time after the storage space 110 is closed, continuously detecting the temperature of the same wall part area of the storage space 110 to obtain a third wall part temperature of the same wall part area, and when the third wall part temperature is greater than a fourth preset temperature threshold value, supplying cold air to the storage space 110;
the third preset temperature threshold is smaller than the first preset temperature threshold.
As described above, when the temperature of the articles in the same storage area of the storage space 110 does not change much during the opening of the storage space 110, or when the temperature of the articles in the same storage area of the storage space 110 changes relatively greatly but the temperature of the same wall area changes relatively little, it is necessary to continuously detect the temperature of the same wall area of the storage space 110, and when the temperature of the wall area rises to a certain temperature, cool air is supplied to the storage space 110.
When the storage space 110 is opened and closed, if the temperature change of the articles in the same storage area is not large, it is indicated that no new articles are put in, and the influence of the outside air entering on the temperature of the original articles in the storage space 110 is relatively small, at this time, cold air does not need to be supplied to the storage space 110 immediately, but when the temperature of the storage space 110 is raised to a certain degree, the cold air is supplied to the storage space 110, so that the storage space 110 can be cooled in time, and the frequent start and stop of the compressor can be avoided.
As previously mentioned, the same storage area may be the entire area of the storage space 110 that can hold items or include the first area and the second area.
Recording the time when the storage space 110 is opened in the process that the storage space 110 is opened;
if the time for which the storage space 110 is opened is greater than the second preset time, supplying cold air to the storage space 110 when the storage space 110 is closed;
if the time for opening the storage space 110 is equal to or less than the second preset time, a step of determining a time for supplying cold air to the storage space 110 according to a situation that new articles are put into the same storage area of the storage space 110 and a temperature change situation of the storage space 110 is performed.
That is, the control method of the embodiment first determines the time that the storage space 110 is opened this time, and if the time is longer, for example, the second preset time is 5 minutes, and the opening time exceeds 5 minutes, it indicates that the outside air enters more, and the influence on the temperature of the original articles or the new articles in the storage space 110 is relatively large, and at this time, when the storage space 110 is closed, cold air should be immediately supplied to the storage space 110. And when the time for opening the door body does not exceed 5 minutes, executing the steps, determining the opportunity for supplying cold air to the storage space 110 according to the flow of the steps, and ensuring the timely cooling of the new articles and the original articles in the storage space 110.
Fig. 6 is an execution flow of the control method of the refrigeration and freezing apparatus 100 applied to the refrigerator according to an embodiment of the invention, and the execution flow comprises the following steps:
s602, detecting an event that the storage space 110 is opened and closed;
s604, recording the time when the storage space 110 is opened in the process of opening the storage space 110;
s606, respectively detecting the temperature of the articles stored in the same storage area of the storage space 110 when the storage space 110 is opened and at a first preset time after the storage space is closed so as to respectively obtain a first temperature and a second temperature of the articles in the same storage area; respectively detecting the temperature of the same wall area of the storage space 110 when the storage space 110 is opened and at a first preset time after the storage space is closed so as to respectively obtain a first wall temperature and a second wall temperature of the same wall area;
s608, judging whether the time for opening the storage space 110 is longer than a second preset time, if so, executing a step S610, and if not, executing a step S612;
s610, supplying cool air to the storage space 110 when the storage space 110 is closed;
s612, calculating the difference value between the second temperature of the articles in the same storage area and the first temperature of the articles, and calculating the difference value between the second temperature of the wall part of the same wall part area and the first temperature of the wall part;
s614, determining whether a difference between the second temperature of the object and the first temperature of the object is greater than a first preset temperature threshold and whether a difference between the second temperature of the wall portion and the first temperature of the wall portion is not less than a second preset temperature threshold, if yes, performing step S616, otherwise, performing step S618;
s616, supplying cool air to the storage space 110 for a first preset time after the storage space 110 is closed;
s618, after the first preset time after the storage space 110 is closed, continuously detecting the temperature of the same wall region of the storage space 110, obtaining a third wall temperature of the same wall region, and when the third wall temperature is greater than a fourth preset temperature threshold, supplying cold air to the storage space 110.
The control method of the embodiment judges whether new articles are put in through the temperature change degree of the articles in the same storage area, judges the influence degree of the outside air entering on the temperature of the original articles in the storage space 110 through the temperature change of the same wall area of the storage space 110, supplies cold air to the storage space 110 when the storage space 110 is judged to have the new articles put in and the influence of the outside environment on the temperature of the original articles in the storage space 110 meets a certain degree, reduces the temperature of the storage space 110 in time, cools the new articles and the original articles in time, and guarantees the freshness of the new articles and the storage period of the original articles.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims (8)

1. A control method of a refrigerator-freezer comprising a cabinet defining a storage space, the control method comprising:
detecting an event that the storage space is opened and closed;
detecting the condition that a new article is put into the same storage area of the storage space in the process of opening and closing the storage space, and detecting the temperature change condition of the storage space caused by the entering of outside air in the process of opening and closing the storage space;
determining the time for supplying cold air to the storage space according to the condition that new articles are put into the same storage area of the storage space and the temperature change condition of the storage space;
the method comprises the following steps of detecting the condition that a new article is placed in the same storage area of the storage space in the process that the storage space is opened and closed, and detecting the temperature change condition of the storage space caused by the entering of outside air in the process that the storage space is opened and closed, wherein the steps comprise:
when the storage space is opened and at a first preset time after the storage space is closed, respectively detecting the temperature of the articles stored in the same storage area of the storage space so as to respectively obtain a first temperature and a second temperature of the articles in the same storage area;
when the storage space is opened and at a first preset time after the storage space is closed, the temperature of the same wall part area of the storage space is respectively detected, so that a first wall part temperature and a second wall part temperature of the same wall part area are respectively obtained.
2. The control method according to claim 1, wherein
The step of determining the time for supplying cold air to the storage space according to the condition that new articles are put into the same storage area of the storage space and the temperature change condition of the storage space comprises the following steps:
calculating the difference between the second temperature of the object and the first temperature of the object in the same storage area, and calculating the difference between the second temperature of the wall part and the first temperature of the wall part in the same wall part area;
if the difference between the second temperature of the article and the first temperature of the article in the same storage area is equal to or greater than a first preset temperature threshold value, and the difference between the second temperature of the wall part and the first temperature of the wall part is equal to or greater than a second preset temperature threshold value, cold air is supplied to the storage space for the first preset time after the storage space is closed.
3. The control method according to claim 2, wherein
The step of determining the time for supplying cold air to the storage space according to the condition that new articles are put into the same storage area of the storage space and the temperature change condition of the storage space further comprises the following steps:
if the difference between the second temperature of the object in the same storage area and the first temperature of the object is smaller than a third preset temperature threshold value, or if the difference between the second temperature of the object in the same storage area and the first temperature of the object is larger than the first preset temperature threshold value and the difference between the second temperature of the wall part in the same wall part area and the first temperature of the wall part is smaller than the second preset temperature threshold value;
after the storage space is closed for a first preset time, continuously detecting the temperature of the same wall part area of the storage space to obtain a third wall part temperature of the same wall part area, and supplying cold air to the storage space when the third wall part temperature is greater than a fourth preset temperature threshold;
the third preset temperature threshold is smaller than the first preset temperature threshold.
4. The control method according to claim 1, further comprising:
recording the time when the storage space is opened in the process of opening the storage space;
if the time for opening the storage space is longer than a second preset time, supplying cold air to the storage space when the storage space is closed;
and if the time for opening the storage space is equal to or less than the second preset time, determining the time for supplying cold air to the storage space according to the condition that new articles are put into the same storage area of the storage space and the temperature change condition of the storage space.
5. A refrigeration freezer apparatus comprising:
a case body including a storage space;
an open-close detector configured to be controlled to detect an event that the storage space is opened and closed;
a new article placement condition detecting unit configured to detect a condition that a new article is placed in the same storage area of the storage space when the storage space is opened and closed;
the temperature change condition detection component of the storage space is configured to detect the temperature change condition of the storage space caused by the entering of outside air in the opening and closing process of the storage space;
controller comprising a memory and a processor, the memory having stored therein a computer program for implementing the control method according to any one of claims 1 to 4 when executed by the processor.
6. A refrigerator-freezer according to claim 5, wherein the freezer is a refrigerator-freezer
The new article placing condition detection component is a first infrared sensor and is configured to respectively detect the temperature of articles stored in the same storage area of the storage space when the storage space is opened and a first preset time after the storage space is closed so as to respectively obtain a first article temperature and a second article temperature of the same storage area;
the storage space temperature change condition detection component is a second infrared sensor and is configured to respectively detect the temperatures of the same wall part area of the storage space when the storage space is opened and at a first preset time after the storage space is closed so as to respectively obtain a first wall part temperature and a second wall part temperature of the same wall part area.
7. A refrigerator-freezer according to claim 6, wherein
The second infrared sensor is further configured to:
if the difference between the second temperature of the object in the same storage area and the first temperature of the object is smaller than a third preset temperature threshold, or if the difference between the second temperature of the object in the same storage area and the first temperature of the object is larger than the first preset temperature threshold and the difference between the second temperature of the wall part in the same wall part area and the first temperature of the wall part is smaller than the second preset temperature threshold;
and after the first preset time after the storage space is closed, continuously detecting the temperature of the same wall part area of the storage space to obtain a third temperature of the wall part of the same wall part area.
8. A refrigerator-freezer according to claim 6, wherein
The first infrared sensor is arranged above one wall part of the storage space and is configured to receive infrared rays radiated by the whole storage area of the storage space for storing articles;
the second infrared sensor is arranged at a position close to the front or the back of one side wall of the storage space and is configured to receive infrared rays radiated by an area, close to the side wall, of the front wall of the storage space or receive infrared rays radiated by an area, close to the side wall, of the back wall of the storage space.
CN202010245943.6A 2020-03-31 2020-03-31 Refrigerating and freezing device and control method thereof Active CN113465263B (en)

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