CN113154743B - Refrigerator smell detection method and refrigerator - Google Patents

Refrigerator smell detection method and refrigerator Download PDF

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Publication number
CN113154743B
CN113154743B CN202010013050.9A CN202010013050A CN113154743B CN 113154743 B CN113154743 B CN 113154743B CN 202010013050 A CN202010013050 A CN 202010013050A CN 113154743 B CN113154743 B CN 113154743B
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China
Prior art keywords
refrigerator
space
gas
detection
detection space
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CN202010013050.9A
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CN113154743A (en
Inventor
李晓峰
苗建林
徐同
李春阳
王铭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
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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Priority to CN202010013050.9A priority Critical patent/CN113154743B/en
Publication of CN113154743A publication Critical patent/CN113154743A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00Self-contained movable devices, e.g. domestic refrigerators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/002Defroster control
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D29/00Arrangement or mounting of control or safety devices

Abstract

The invention discloses a refrigerator smell detection method and a refrigerator, wherein the method comprises the following steps: collecting gas in a refrigerating chamber of the refrigerator to an independent detection space; starting a heating device to heat the gas in the detection space to a first temperature; and collecting odor data of the gas in the detection space after heating. Compared with the prior art, the method and the device have the advantages that the gas in the refrigerator is collected to the independent detection space, the gas in the detection space is heated, and then the odor data of the gas is collected and obtained at a certain temperature, so that the accuracy of the refrigerator odor detection is guaranteed.

Description

Refrigerator smell detection method and refrigerator
Technical Field
The invention relates to the field of smell detection, in particular to a refrigerator smell detection method, a smell detection device and a refrigerator.
Background
Food materials are put into the refrigerator in various types, in the storage process, different foods have different diffused smells, the different smells are mixed together to form unpleasant smells, in addition, the foods which are not found after being stored for a long time can slowly deteriorate or even rot, and in the process, the foods can release unpleasant smells. Because the refrigerator is a closed space, odor cannot be discharged, and peculiar smell exists in the refrigerator.
In order to improve user experience, it becomes necessary to provide a smell sensor in the refrigerator to detect and feed back smell in the refrigerator to the user. However, the moving speed of the gas molecules will drop rapidly with the decrease of the temperature, and the refrigerator is a low-temperature environment, so that the strength of the odor detected by the odor sensor is not matched with the odor condition actually existing in the refrigerator. Therefore, in order to accurately reflect the odor condition in the refrigerator, the odor sensor should detect the odor of the refrigerator at a certain temperature.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a refrigerator smell detection method and a refrigerator, and solves the problem that the detection of the smell in the refrigerator is inaccurate.
In order to achieve the above object, an embodiment of the present invention provides a refrigerator smell detection method, including:
collecting gas in a refrigerating chamber of the refrigerator to an independent detection space;
heating the gas in the detection space to a first temperature;
and collecting odor data of the gas in the detection space after heating.
As a further improvement of an embodiment of the present invention, the step of "collecting the gas in the refrigeration compartment of the refrigerator to the independent detection space" is to collect the gas in the refrigeration compartment of the refrigerator at a return air inlet of the refrigerator to the independent detection space.
As a further improvement of an embodiment of the present invention, the step of "collecting the gas in the refrigerating compartment of the refrigerator to an independent detection space" specifically includes:
opening a detection space air door;
judging whether the temperature of the gas in the detection space is less than or equal to a second temperature or not;
if yes, the detection space air door is closed.
As a further improvement of an embodiment of the present invention, the second temperature is a set temperature of the refrigerating compartment.
As a further improvement of an embodiment of the present invention, before the step of "collecting the gas in the refrigerating compartment of the refrigerator to an independent detection space", the method further comprises:
judging whether a compressor of the refrigerator is in a starting state or not;
if yes, the detection space air door is opened.
As a further improvement of an embodiment of the present invention, the method further comprises:
if the compressor is in a shutdown state, judging whether an evaporator of the refrigerator is defrosted;
if yes, the air door of the detection space is opened and the gas in the detection space is heated.
As a further improvement of an embodiment of the present invention, the step of "collecting odor data of the gas in the detection space after heating" includes:
at least two data values having the same time interval are collected and averaged as an output value.
In order to achieve the above object, an embodiment of the present invention provides a refrigerator, including a refrigeration compartment and an odor detection device disposed in the refrigeration compartment, wherein the odor detection device includes a detection space, the detection space has an opening, the opening is provided with a damper to connect or separate the detection space and the refrigeration compartment, a temperature sensor, a heating device, and an odor sensor are disposed in the detection space, and the temperature sensor, the heating device, and the odor sensor are all connected to a main control board.
As a further improvement of an embodiment of the present invention, an air duct cover plate is disposed in the refrigeration compartment, an air return opening is disposed on the air duct cover plate, and the odor detection device is disposed on one side of the air return opening on the air duct cover plate.
As a further improvement of an embodiment of the present invention, the detection space is provided with a partition plate that divides the detection space into a first space and a second space that communicate with each other, the first space is partitioned from the cooling compartment, and the second space is communicated with the cooling compartment.
As a further improvement of the embodiment of the present invention, the first space is provided with a first damper, the second space is provided with a second damper, and the first damper and the second damper can be opened or closed independently.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, the gas in the refrigerator is collected to the independent detection space, the gas in the detection space is heated, and then the odor data of the gas is collected, and the odor data is obtained at a certain temperature, so that the accuracy of the refrigerator odor detection is ensured.
Drawings
Fig. 1 is a control flow chart of a refrigerator smell detection method according to an embodiment of the present invention;
FIG. 2 is a perspective schematic view of an odor detection device disposed on a cover plate of an air duct according to an embodiment of the present invention;
fig. 3 is a partially enlarged view of fig. 2.
In the figure, an odor detection device 1, an air duct cover plate 2, a temperature sensor 3, an odor sensor 4, a heating device 5, an air return opening 6, a partition plate 7, a first side wall 8, a second side wall 9, a bottom wall 10, a third side wall 11, a first space 12, an evaporator 13 and a second space 14 are arranged.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.
It should be noted that the terms "first" to "fourth" may be used to describe various elements or structures, but these described objects should not be limited by these terms, which are only used to distinguish these described objects from each other, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
Referring to fig. 1, which is a control flow chart of a refrigerator odor detection method according to an embodiment of the present invention, the method of the present invention includes:
step S100: and collecting the gas in the refrigerating chamber of the refrigerator to an independent detection space.
In this embodiment, the separate detection space is disposed in the refrigeration compartment of the refrigerator, and may be a gas that is selectively communicated with the refrigeration compartment of the refrigerator, while being thermally isolated from the refrigeration compartment of the refrigerator. For example, the detection space may be provided in a box shape, and a damper that can be opened and closed is provided to communicate or block the detection space with the refrigerating compartment of the refrigerator.
It is understood that when the damper is opened, the gas in the refrigeration compartment of the refrigerator can enter the detection space, that is, the detection space can collect the gas in the refrigeration compartment of the refrigerator, and when the damper is closed, the gas in the detection space and the gas in the refrigeration compartment of the refrigerator can be separated to form an independent space, so that the gas in the detection space can be heated and detected later without being influenced by the gas in the refrigeration compartment.
Step S200: heating the gas in the detection space to a first temperature.
In this step, the gas in the detection space is heated by a heating device, which is disposed in the detection space and can be selectively turned on or off. When the heating device is turned on, the gas temperature in the detection space slowly rises, and when the heating device is used for heating the gas in the detection space, the temperature sensor in the detection space can be utilized for monitoring the gas temperature in the detection space so as to judge whether the gas in the detection space rises to a first temperature.
The first temperature is a preset value, and a person skilled in the art can set the first temperature according to actual conditions, which is not limited in the embodiment of the present invention. It should be noted that, when the detection space is communicated with the refrigeration compartment of the refrigerator, the first temperature is not too high in consideration of the influence of the heated gas in the detection space on the refrigeration effect of the refrigerator, and is not too low in consideration of the influence of the temperature on the accuracy of the odor detection result, so that the first temperature is generally selected to be 5-8 ℃.
Illustratively, the first temperature is set to be 7 ℃, when the heating device heats the gas in the detection space, the temperature sensor collects the gas temperature value of the detection space in real time, when the gas temperature in the detection space rises to 7 ℃, the heating device is turned off, the heating of the gas in the detection space is stopped, and the next step is performed, so that the waste of heat can be prevented.
Step S300: and collecting odor data of the gas in the detection space after heating.
In this embodiment, the odor data is collected from the detection space by an odor sensor of the detection space. Here, the odor sensor is an electronic system for recognizing odor, and the acquired odor data is a data value representing the intensity of the odor, which reflects the odor status of the detected gas.
The number of the data values collected by the odor sensor can be one or more, when a plurality of data values are collected, the odor sensor can be preset to collect the data values according to a certain time interval, and the number of the specific data values and the time interval can be set by a person skilled in the art according to needs.
In a specific embodiment, the step of "collecting odor data of the gas in the detection space after heating" includes:
at least two data values having the same time interval are collected and averaged as an output value.
The collection of at least two data values and the averaging of the at least two data values is to improve the accuracy of the output values. For example, the time duration for the odor sensor to acquire data is set to be one minute, the acquisition time interval is set to be five seconds, namely, the odor sensor acquires one data value every five seconds in one minute, twelve odor data values are acquired totally, the acquired twelve odor data values are transmitted to the main control board, and the main control board performs averaging processing on the data values and outputs the averaged value to the user side as an output value.
In a specific embodiment, the detection space is provided with a damper, and the step of collecting the gas in the refrigerating compartment of the refrigerator to the independent detection space specifically comprises the following steps:
opening a detection space air door;
judging whether the temperature of the gas in the detection space is less than or equal to a second temperature or not;
if yes, the detection space air door is closed.
In other embodiments, the detection space damper may have other configurations as long as the detection space and the refrigerator compartment can be brought into gas communication or blocked as necessary. When the air door of the detection space is opened, the gas in the refrigerating chamber of the refrigerator enters the detection space, and an additional device for assisting in gas collection is not needed.
The second temperature is the set temperature of the refrigeration chamber, when the temperature of the gas in the detection space is less than or equal to the set temperature of the refrigeration chamber, the gas in the detection space is considered to be the gas in the current refrigeration chamber at the moment, the gas in the detection space is replaced by new gas, the air door of the detection space can be closed, the collected gas is ensured to be the current gas in the refrigeration chamber, and therefore the effectiveness of each smell detection is ensured.
Preferably, the step of collecting the gas in the refrigeration compartment of the refrigerator to the independent detection space is to collect the gas in the refrigeration compartment of the refrigerator to the independent detection space at a return air inlet of the refrigerator.
The gas collected at the air return port is the gas at the air return port of the refrigerator, and the cold air flowing out of the refrigerator evaporator flows in the refrigeration compartment of the refrigerator and then reaches the air return port of the refrigerator, so that the gas with food smell in the refrigeration compartment is brought to the air return port, the gas molecule concentration at the air return port is the strongest, and the gas at the air return port is collected and the smell of the gas at the air return port is detected, so that the smell condition in the refrigeration compartment of the refrigerator can be truly reflected.
In some embodiments, the step of "collecting the gas in the refrigeration compartment of the refrigerator to the independent detection space" further comprises:
judging whether a compressor of the refrigerator is in a starting state or not;
if yes, the detection space air door is opened.
When a compressor of the refrigerator is in a starting state, the flowing speed of gas in a refrigerating chamber of the refrigerator is increased, so that the smell emitted by food in the refrigerator is strong, and the detection of the smell in the refrigerator is more meaningful.
In a specific embodiment, the method further comprises:
if the compressor is in a shutdown state, judging whether an evaporator of the refrigerator is defrosted;
if yes, opening the air door of the detection space and heating the gas in the detection space.
When the compressor is in a shutdown state, the gas flow speed in the refrigerating chamber of the refrigerator is slow, and the detection significance of the odor in the refrigerator is not large at the moment, so that whether the evaporator of the refrigerator defrosts or not is judged. If the evaporator of the refrigerator is defrosted, the gas in the detection space is heated and the air door of the detection space is opened, and the heated gas in the detection space flows to the evaporator, so that heat is brought to the evaporator, the defrosting process of the evaporator is accelerated, and the defrosting efficiency is improved. And when defrosting is finished, closing the detection space air door and stopping heating the gas in the detection space.
The invention also provides a refrigerator which comprises a refrigerating chamber, the odor detection device 1, an evaporator 13 and a compressor, wherein the odor detection device 1 is arranged in the refrigerating chamber and is used for detecting the odor of the gas in the refrigerating chamber.
Furthermore, an air duct cover plate 2 for returning air to the refrigerator is arranged in the refrigerating chamber, and the odor detection device 1 is arranged on the air duct cover plate 2.
Referring to fig. 2 to 3, there are perspective schematic views illustrating an odor detection device 1 disposed on an air duct cover plate 2 according to an embodiment of the present invention. The air duct cover plate 2 is provided with an air return opening 6, and the odor detection device 1 is arranged on one side of the air return opening 6.
Specifically, the odor detection device 1 includes a detection space defined by a bottom wall 10 and a side wall extending around the bottom wall 10, the detection space has an opening, a top surface opposite to the bottom wall 10 is an opening communicated with the detection space, and the opening is provided with a damper to communicate or separate the detection space and the refrigeration compartment.
The side walls comprise a first side wall 8, a second side wall 9 and a third side wall 11, the second side wall 9 and the third side wall 11 are arranged in parallel, and the air duct cover plate 2 is arranged on the surface opposite to the second side wall 9. In other embodiments, the opposite surface of the second sidewall 9 is a fourth sidewall, and the fourth sidewall is disposed on the duct cover 2.
Furthermore, the detection space is provided with a partition plate 7, the partition plate 7 divides the detection space into a first space 12 and a second space 14 which are communicated with each other, the first space 12 is separated from the refrigeration chamber, and the second space 14 is communicated with the refrigeration chamber. The first space 12 is communicated with the evaporator 13, the air in the refrigerating chamber flows to the first space 12 after flowing to the second space 14 through the air return opening 6 and then flows to the evaporator 13, and the normal return air of the refrigerator is not influenced when the air door is opened.
Specifically, the partition 7 is perpendicular to the bottom wall 10, and has a gap between one end thereof and the bottom wall 10 and an opening through which the first space 12 and the second space 14 communicate, and the gas in the first space 12 flows to the second space 14.
Set up temperature sensor 3, smell sensor 4 and heating device 5 in the detection space, just air door, temperature sensor 3, smell sensor 4, heating device 5 all link to each other with the main control board.
Further, the temperature sensor 3, the odor sensor 4, and the heating device 5 are disposed close to each other in the detection space, in this embodiment, the three are disposed on the partition 7, and also disposed close to the side wall, so that the close disposition of the three can reduce the turn-on time of the heating device 5, and at the same time, improve the accuracy of the detection result of the odor sensor 4.
In the present embodiment, the heating device 5 is a heating wire, and the temperature of the detection space gas is raised by the heat generated by the heating wire. The heating device 5 can also be a heating rod, and the structure or the arrangement position of the heating device 5 can be flexible and changeable, so long as the heating device can increase the temperature of the detection space in the operation process. The temperature sensor 3 monitors the temperature of the detection space in real time and outputs a temperature value to the main control board, and the main control board controls the operation of the odor sensor 4 and the heating device 5 according to the temperature value.
In another specific embodiment, the first space 12 is provided with a first damper, and the second space 14 is provided with a second damper, wherein the first damper and the second damper can be opened or closed independently.
Preferably, when the compressor is in a shutdown state and the evaporator 13 is defrosted, the second damper and the heating device 5 are opened to accelerate the defrosting of the evaporator 13, the first damper is kept closed, so that heated gas generated by the heating device 5 is prevented from flowing to the air return opening 6 through the first space 12 to reach the refrigerating chamber, heat waste is caused, and meanwhile, the temperature of the refrigerating chamber is fluctuated due to hot gas flowing into the refrigerating chamber, and the storage of food is influenced.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.

Claims (8)

1. A refrigerator smell detection method, characterized in that the method comprises:
collecting the gas in the refrigerating chamber of the refrigerator to an independent detection space at an air return port of the refrigerator;
heating the gas in the detection space to a first temperature, wherein the first temperature is a preset value;
collecting odor data of the gas in the detection space after heating;
the step of collecting the gas in the refrigerating chamber of the refrigerator to an independent detection space specifically comprises the following steps:
opening a detection space air door;
judging whether the temperature of the gas in the detection space is less than or equal to a second temperature, wherein the second temperature is the set temperature of the refrigerating chamber;
if yes, the detection space air door is closed.
2. The refrigerator odor detection method as claimed in claim 1, wherein said step of "collecting the gas in the refrigerating compartment of the refrigerator to a separate detection space" further comprises:
judging whether a compressor of the refrigerator is in a starting state or not;
if yes, the detection space air door is opened.
3. The refrigerator odor detection method as claimed in claim 2, wherein said method further comprises:
if the compressor is in a shutdown state, judging whether an evaporator of the refrigerator is defrosted;
if yes, opening the air door of the detection space and heating the gas in the detection space.
4. The refrigerator odor detection method according to claim 1, wherein the step of collecting odor data of the gas in the detection space after heating comprises:
at least two data values having the same time interval are collected and averaged as an output value.
5. A refrigerator comprising a refrigerating compartment and an odor detection device disposed in the refrigerating compartment, wherein the odor detection device comprises a detection space having an opening, and a damper is disposed in the opening to communicate or separate the detection space with the refrigerating compartment, wherein a temperature sensor, a heating device, and an odor sensor are disposed in the detection space, and the temperature sensor, the heating device, and the odor sensor are connected to a main control board, and the refrigerator can perform the steps of the refrigerator odor detection method according to any one of claims 1 to 4.
6. The refrigerator as claimed in claim 5, wherein an air duct cover is disposed in the refrigerating compartment, an air return opening is disposed on the air duct cover, and the odor detection device is disposed on the air duct cover on a side of the air return opening.
7. The refrigerator according to claim 5, wherein the sensing space is provided with a partition dividing the sensing space into a first space and a second space communicating with each other, the first space being blocked from the refrigerating compartment, and the second space being communicated with the refrigerating compartment.
8. The refrigerator of claim 7, wherein the first space is provided with a first damper, the second space is provided with a second damper, and the first damper and the second damper are independently openable or closable.
CN202010013050.9A 2020-01-07 2020-01-07 Refrigerator smell detection method and refrigerator Active CN113154743B (en)

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CN113154743B true CN113154743B (en) 2022-11-08

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04140655A (en) * 1990-10-01 1992-05-14 Fujita Corp Paint odor detective method
CN1474134A (en) * 2002-08-19 2004-02-11 乐金电子(天津)电器有限公司 Pickled vegetable electric refrigerator
JP2011052957A (en) * 2010-12-03 2011-03-17 Panasonic Corp Refrigerator
CN203117191U (en) * 2012-12-24 2013-08-07 合肥美菱股份有限公司 Refrigerator odor detection device
CN106979998A (en) * 2017-04-06 2017-07-25 北京农业质量标准与检测技术研究中心 The bionic olfactory Rapid non-destructive testing device and detection method of apple freshness
CN206710409U (en) * 2017-04-06 2017-12-05 北京农业质量标准与检测技术研究中心 The bionic olfactory Rapid non-destructive testing device of apple freshness

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04140655A (en) * 1990-10-01 1992-05-14 Fujita Corp Paint odor detective method
CN1474134A (en) * 2002-08-19 2004-02-11 乐金电子(天津)电器有限公司 Pickled vegetable electric refrigerator
JP2011052957A (en) * 2010-12-03 2011-03-17 Panasonic Corp Refrigerator
CN203117191U (en) * 2012-12-24 2013-08-07 合肥美菱股份有限公司 Refrigerator odor detection device
CN106979998A (en) * 2017-04-06 2017-07-25 北京农业质量标准与检测技术研究中心 The bionic olfactory Rapid non-destructive testing device and detection method of apple freshness
CN206710409U (en) * 2017-04-06 2017-12-05 北京农业质量标准与检测技术研究中心 The bionic olfactory Rapid non-destructive testing device of apple freshness

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