CN114857834A - Constant-temperature fresh-keeping refrigerator, constant-temperature control method and fresh-keeping control method - Google Patents

Constant-temperature fresh-keeping refrigerator, constant-temperature control method and fresh-keeping control method Download PDF

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Publication number
CN114857834A
CN114857834A CN202210624782.0A CN202210624782A CN114857834A CN 114857834 A CN114857834 A CN 114857834A CN 202210624782 A CN202210624782 A CN 202210624782A CN 114857834 A CN114857834 A CN 114857834A
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China
Prior art keywords
temperature
micro
freezing chamber
chamber
refrigerating
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CN202210624782.0A
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Chinese (zh)
Inventor
曹云
徐弯弯
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Changhong Meiling Co Ltd
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Changhong Meiling Co Ltd
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Priority to CN202210624782.0A priority Critical patent/CN114857834A/en
Publication of CN114857834A publication Critical patent/CN114857834A/en
Pending legal-status Critical Current

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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
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with 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
    • 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
    • F25D29/00—Arrangement or mounting of control or safety devices
    • F25D29/008—Alarm 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/04—Treating air flowing to refrigeration compartments
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/067—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by air ducts
    • 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
    • F25D2700/00—Means for sensing or measuring; Sensors therefor
    • F25D2700/12—Sensors measuring the inside temperature
    • F25D2700/121—Sensors measuring the inside temperature of particular compartments
    • 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
    • F25D2700/14—Sensors measuring the temperature outside the refrigerator or freezer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

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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)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

The invention discloses a constant-temperature fresh-keeping refrigerator, a constant-temperature control method and a fresh-keeping control method, and relates to the technical field of refrigerators. The invention comprises a refrigerating chamber, a freezing chamber, a micro-freezing chamber, a refrigerating system and a control system, wherein the refrigerating chamber is hinged with a refrigerating chamber door body, the micro-freezing chamber is arranged in the refrigerating chamber, an air door for transferring cold air from the freezing chamber to the refrigerating chamber is arranged between the freezing chamber and the refrigerating chamber, a plurality of temperature sensors and freshness sensors are arranged on the micro-freezing chamber, and the temperature sensors, the freshness sensors, the refrigerating system, a door switch and a display panel are all electrically connected with the control system. The invention achieves the purpose of maintaining the temperature stability of the micro-freezing chamber by arranging the micro-freezing chamber in the cold storage chamber, arranging a plurality of temperature sensors and freshness sensors on the micro-freezing chamber, judging whether the micro-freezing chamber needs to be refrigerated or not by combining the set temperature threshold and the odor threshold, and controlling the flow of cold air to the micro-freezing chamber through the air door.

Description

Constant-temperature fresh-keeping refrigerator, constant-temperature control method and fresh-keeping control method
Technical Field
The invention belongs to the technical field of refrigerators, and particularly relates to a constant-temperature fresh-keeping refrigerator, a constant-temperature control method and a fresh-keeping control method.
Background
The refrigerator is a household appliance which is most frequently used in life of people and is used for keeping food fresh. With diversification of user demands and improvement of living standard, people have higher and higher requirements on food preservation. The temperature is an indispensable condition for food preservation control, constant temperature and proper low temperature are required for food preservation, fluctuation in the minimum temperature range is ensured, and the food preservation is more favorable. In order to ensure constant temperature and proper low temperature, the existing refrigerator is provided with a micro-freezing chamber. The micro-freezing chamber is usually arranged between the refrigerating chamber and the freezing chamber, but the direct temperature difference between the micro-freezing chamber and the freezing chamber is large, and the micro-freezing chamber is easily influenced by the freezing chamber to generate large temperature fluctuation.
The invention discloses a refrigerator and a constant temperature control method of the refrigerator, wherein a micro-freezing chamber is arranged in a freezing chamber of the refrigerator, an independent heating device and a hot air loop are arranged in the micro-freezing chamber to adjust the temperature in the micro-freezing chamber, the extra workload of refrigerating a cold storage agent for refrigerating the micro-freezing chamber is avoided, the cold energy is fully used for refrigerating food in the micro-freezing chamber, the rapid cooling of the food is facilitated, and the food is beneficial to the preservation of the food. However, the heating device and the hot air loop of the invention have the problems of complex structure, higher cost, low assembly efficiency and the like. And the food in the micro-freezing chamber is fresh or not, and can not be obtained by the user.
Disclosure of Invention
The invention aims to provide a constant-temperature fresh-keeping refrigerator, which is characterized in that a micro freezing chamber is arranged in a refrigerating chamber, a plurality of temperature sensors and freshness sensors are arranged on the micro freezing chamber, whether the micro freezing chamber needs to be refrigerated or not is judged by combining a set temperature threshold value, and cold air flow is controlled to flow from the freezing chamber to the micro freezing chamber through an air door, so that the aim of maintaining the temperature of the micro freezing chamber is fulfilled. The problem of current little room of freezing set up in freezing the room indoor, the indoor temperature of little room of freezing is adjusted to little indoor independent heating device and the hot-blast return circuit of setting up in freezing a little, and the structure is complicated, and the cost is higher, and the installation effectiveness is low is solved. The invention also aims to provide a constant temperature control method of the constant temperature fresh-keeping refrigerator and a fresh-keeping control method of the constant temperature fresh-keeping refrigerator.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a constant-temperature fresh-keeping refrigerator, a constant-temperature control method and a fresh-keeping control method, wherein the constant-temperature fresh-keeping refrigerator comprises a cold storage chamber, a freezing chamber, a micro-freezing chamber, a refrigerating system and a control system, wherein the cold storage chamber is hinged with a cold storage chamber door body, the micro-freezing chamber is arranged in the cold storage chamber, an air door used for transmitting cold air from the freezing chamber to the cold storage chamber is arranged between the freezing chamber and the cold storage chamber, the air door comprises a first air outlet and a second air outlet, the first air outlet is communicated with the cold storage chamber, and the second air outlet is communicated with the micro-freezing chamber. A door switch for detecting the opening and closing of a door body of the refrigerating chamber is installed in the refrigerating chamber, a display panel is arranged on the outer surface of the door body of the refrigerating chamber, and the display panel comprises a buzzer. The micro-freezing chamber is provided with a plurality of temperature sensors and freshness sensors, and the temperature sensors, the freshness sensors, the refrigerating system, the air door, the door switch and the display panel are all electrically connected with the control system.
In a preferred embodiment of the present invention, the refrigerating compartment is disposed above the freezing compartment, and the micro-freezing compartment is disposed at a lower portion in the refrigerating compartment.
As a preferable technical scheme of the invention, the second air outlet is communicated with the micro freezing chamber through an air duct, and an air blower is arranged in the air duct and is arranged at one end close to the second air outlet. The setting of air-blower is changeed in the air conditioning and is got into the room that freezes a little for the air current circulation, the cooling is faster.
In a preferred embodiment of the present invention, the plurality of temperature sensors includes a first temperature sensor installed on an outer surface of the micro-freezing chamber and a second temperature sensor installed on an inner surface of the micro-freezing chamber.
As a preferable technical scheme of the invention, the second temperature sensor and the freshness sensor are fixedly arranged at the top of the micro-freezing chamber.
As a preferable technical solution of the present invention, the freshness sensor is an odor sensor.
Constant temperature fresh-keeping refrigeratorThe temperature control method comprises the following steps: s1: the refrigerating system is normally operated, and the first temperature sensor is used for measuring the temperature t of the outer surface of the micro-freezing chamber 1 The detection is performed and the detection data is transmitted to the control system. S2: the control system judges the temperature t 1 Whether or not it is less than or equal to the temperature threshold T 1 70%, if yes, go to S4; if not, S3 is executed. S3: and keeping the refrigerating system in an operating state, and simultaneously opening the second air outlet to operate the air blower. S4: the control system sends a signal to close the refrigerating system and simultaneously closes the second air outlet and the air blower. S5: the second temperature sensor is used for measuring the temperature t in the micro-freezing chamber 2 The detection is performed and the detection data is transmitted to the control system. S6: the control system judges the temperature t 2 Whether or not less than or equal to threshold value T 2 If yes, the second air outlet and the blower are closed; if not, the second air outlet and the blower are opened;
as a preferred embodiment of the present invention, the temperature threshold T in S2 is 1 The lowest temperature value detected by the first temperature sensor after 8 hours of operation; temperature threshold T in the S6 2 Is 0 ℃.
A preservation control method of a constant-temperature preservation refrigerator comprises the following steps: s1: the freshness sensor continuously operates to detect the peculiar smell in the micro-freezing chamber and transmits detection data to the control system. S2: the control system judges whether the detected odor value is smaller than the odor threshold value, if so, S3 is executed; if not, S4 is executed. S3: the fresh-keeping icon on the display panel is lightened to display the freshness of the food. S4: the freshness icon on the display panel is turned off or blinked to show that the food is not fresh, and S5 is performed. S5: the control system detects whether a door body of the refrigerating compartment is opened or not through a door switch, and if yes, a buzzer buzzes; if not, the buzzer keeps a closed state.
As a preferable technical solution of the present invention, the odor threshold is 25%.
The invention has the following beneficial effects:
1. according to the invention, the micro-freezing chamber is arranged in the refrigerating chamber, the first temperature sensor and the second temperature sensor are respectively arranged inside and outside the micro-freezing chamber and are used for detecting the temperature inside and outside the micro-freezing chamber, whether the micro-freezing chamber needs to be refrigerated is judged by combining a set temperature threshold value, and meanwhile, the air door is used for controlling the cold air flow to flow from the freezing chamber to the micro-freezing chamber, so that the aim of maintaining the temperature stability of the micro-freezing chamber is achieved, and the temperature control is more accurate.
2. According to the invention, the freshness sensor is arranged in the micro-freezing chamber and is an odor sensor for detecting peculiar smell, whether food is deteriorated can be detected in time according to the set peculiar smell threshold value, and a prompt is given through the display board and the buzzer, so that the freshness of the food is further ensured.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a constant temperature fresh-keeping refrigerator according to the present invention;
FIG. 2 is a system diagram of the constant temperature fresh-keeping refrigerator of the present invention;
FIG. 3 is a schematic flow chart of a constant temperature control method of a constant temperature fresh-keeping refrigerator according to the present invention;
FIG. 4 is a schematic flow chart of a preservation control method of a constant-temperature preservation refrigerator according to the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1-a refrigerating chamber, 2-a freezing chamber, 3-a micro-freezing chamber, 4-an air door, 401-a first air outlet, 402-a second air outlet, 5-a first temperature sensor, 6-a second temperature sensor, 7-a freshness sensor and 8-an air blower.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.
Example one
Referring to fig. 1-2, the present embodiment provides a constant temperature fresh-keeping refrigerator, which includes a refrigerating compartment 1, a freezing compartment 2, a micro-freezing compartment 3, a refrigeration system and a control system. The refrigerating chamber 1 is disposed above the freezing chamber 2, and the micro-freezing chamber 3 is disposed at the lower portion of the refrigerating chamber 1. Little freezing room 3 sets up in cold-stored room 1, is equipped with between freezing room 2 and the cold-stored room 1 and is used for from freezing room 2 to the air door 4 of cold-stored room 1 transmission cold wind, and air door 4 includes first air outlet 401 and second air outlet 402, first air outlet 401 and cold-stored room 1 intercommunication, and second air outlet 402 and little freezing room 3 pass through the wind channel intercommunication, install air-blower 8 in the wind channel, and air-blower 8 sets up in the one end that is close to second air outlet 402.
The cold storage chamber 1 is hinged with a cold storage chamber door body, and a door switch for detecting the opening and closing of the cold storage chamber door body is installed in the cold storage chamber 1. The outer surface of the refrigerating chamber door body is provided with a display board, and the display board is provided with a buzzer.
The outer surface of the micro-freezing chamber 3 is provided with a first temperature sensor 5, the top in the micro-freezing chamber 3 is provided with a second temperature sensor 6 and a freshness sensor 7, and the freshness sensor 7 is an odor sensor.
The first temperature sensor 5, the second temperature sensor 6, the freshness sensor 7, the refrigerating system, the air door 4, the door switch and the display panel are all electrically connected with the control system.
Example two
Referring to fig. 3, based on the first embodiment, the present embodiment provides a constant temperature control method for a constant temperature fresh-keeping refrigerator, including the following steps:
s1: the refrigeration system operates normally, the first temperature sensor 5 is used for measuring the temperature t of the outer surface of the micro-freezing chamber 3 1 The detection is performed and the detection data is transmitted to the control system.
S2: the control system judges the temperature t 1 Whether or not less than or equal to temperature threshold T 1 70%, if yes, go to S4; if not, S3 is executed.
S3: the refrigeration system is kept in an operating state while the second outlet port 402 is opened and the blower 8 is operated.
S4: the control system signals the refrigeration system to shut down and simultaneously the second outlet 402 and the blower 8 are shut down.
S5: the second temperature sensor 6 measures the temperature t in the micro-freezing chamber 3 2 And detecting and transmitting the detection data to the control system.
S6: the control system judges the temperature t 2 Whether or not less than or equal to threshold value T 2 ，T 2 Is 0 ℃. If so, the second air outlet 402 and the blower 8 are closed; if not, the second air outlet 402 and the blower 8 are opened.
Wherein, the temperature threshold T in S2 1 The lowest temperature value detected for 8 hours of operation of the first temperature sensor 5 is obtained.
This embodiment is through setting up little freezing room 3 in cold-stored room 1, install first temperature sensor 5 and second temperature sensor 6 inside and outside little freezing room 3 respectively and be used for detecting the inside and outside temperature of little freezing room 3, whether the temperature threshold value that combines to set for judges little freezing room 3 and need refrigerate, it flows to little freezing room 3 from freezing room 2 to little freezing room to control the cold air current through air door 4 simultaneously, reach and maintain the stable purpose of little freezing room 3 temperature, and the accuse temperature is more accurate.
EXAMPLE III
Referring to fig. 4, based on the first embodiment, the present embodiment provides a preservation control method for a constant-temperature preservation refrigerator, including the following steps:
s1: the freshness sensor 7 continuously operates to detect the peculiar smell in the micro freezing chamber 3 and transmits the detection data to the control system.
S2: the control system judges whether the detected odor value is smaller than an odor threshold value, and the odor threshold value is 25%. If yes, go to S3; if not, S4 is executed.
S3: the fresh-keeping icon on the display panel is lightened to display the freshness of the food.
S4: the freshness icon on the display panel is turned off or blinked to show that the food is not fresh, and S5 is performed.
S5: the control system detects whether a door body of the refrigerating compartment is opened or not through a door switch, and if yes, a buzzer buzzes; if not, the buzzer keeps a closed state.
This embodiment is through setting up new freshness sensor 7 in the little room 3 that freezes, and new freshness sensor 7 is used for detecting the peculiar smell for odor sensor, can in time detect out food according to the peculiar smell threshold value that sets up whether rotten to send the suggestion through display panel and bee calling organ, further ensure the new freshness of food.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (10)

1. The utility model provides a constant temperature refrigerator that keeps fresh, includes cold-stored room (1), freezing room (2), refrigerating system and control system, cold-stored room (1) articulates there is the cold-stored room door body, its characterized in that:
the refrigerator is characterized by further comprising a micro freezing chamber (3), the micro freezing chamber (3) is arranged in the refrigerating chamber (1), an air door (4) used for transmitting cold air from the freezing chamber (2) to the refrigerating chamber (1) is arranged between the freezing chamber (2) and the refrigerating chamber (1), the air door (4) comprises a first air outlet (401) and a second air outlet (402), the first air outlet (401) is communicated with the refrigerating chamber (1), and the second air outlet (402) is communicated with the micro freezing chamber (3);
a door switch for detecting the opening and closing of a door body of the refrigerating chamber is arranged in the refrigerating chamber (1), a display panel is arranged on the outer surface of the door body of the refrigerating chamber, and the display panel comprises a buzzer;
a plurality of temperature sensors and a freshness sensor (7) are installed on the micro freezing chamber (3), and the temperature sensors, the freshness sensor (7), the refrigerating system, the air door (4), the door switch and the display panel are all electrically connected with the control system.
2. Constant-temperature fresh-keeping refrigerator according to claim 1, characterized in that the cold storage chamber (1) is arranged above the freezing chamber (2), and the micro-freezing chamber (3) is arranged at the lower part of the cold storage chamber (1).
3. The constant-temperature fresh-keeping refrigerator as claimed in claim 2, wherein the second air outlet (402) is communicated with the micro freezing chamber (3) through an air duct, an air blower (8) is installed in the air duct, and the air blower (8) is arranged at one end close to the second air outlet (402).
4. A thermostatically fresh-keeping refrigerator as claimed in claim 1, characterized in that said temperature sensors comprise a first temperature sensor (5) and a second temperature sensor (6), said first temperature sensor (5) being mounted on the external surface of the micro-freezer compartment (3) and said second temperature sensor (6) being mounted on the internal surface of the micro-freezer compartment (3).
5. Constant temperature refreshment refrigerator according to claim 4, characterized in that the second temperature sensor (6) and the freshness sensor (7) are fixedly mounted on top of the micro freezer compartment (3).
6. A constant-temperature crisper refrigerator according to claim 1, characterized in that said freshness sensor (7) is an odor sensor.
7. A constant temperature control method of a constant temperature fresh-keeping refrigerator according to any one of claims 1 to 6, characterized by comprising the steps of:
s1: the refrigerating system is normally operated, and the first temperature sensor (5) is used for measuring the temperature t of the outer surface of the micro freezing chamber (3) 1 Detecting and transmitting the detection data to a control system;
s2: the control system judges the temperature t 1 Whether or not less than or equal to temperature threshold T 1 70%, if yes, go to S4; if not, go to S3;
s3: keeping the refrigerating system in an operating state, simultaneously opening the second air outlet (402) and operating the blower (8);
s4: the control system sends a signal to close the refrigerating system and simultaneously closes the second air outlet (402) and the blower (8);
s5: the second temperature sensor (6) is used for measuring the temperature t in the micro-freezing chamber (3) 2 Detecting and transmitting the detection data to a control system;
s6: the control system judges the temperature t 2 Whether or not less than or equal to threshold value T 2 If yes, the second air outlet (402) and the blower (8) are closed; if not, the second air outlet (402) and the blower (8) are opened.
8. The constant temperature control method of constant temperature fresh-keeping refrigerator according to claim 7, wherein the temperature threshold T in S2 1 A lowest temperature value detected by the first temperature sensor (5) when the first temperature sensor operates for 8 hours; temperature threshold T in S6 2 Is 0 ℃.
9. A freshness control method of a constant temperature freshness refrigerator according to any one of claims 1 to 6, comprising the steps of:
s1: the freshness sensor (7) continuously operates to detect the peculiar smell in the micro freezing chamber (3) and transmits detection data to the control system;
s2: the control system judges whether the detected odor value is smaller than the odor threshold value, if so, S3 is executed; if not, go to S4;
s3: the fresh-keeping icon on the display panel is lightened to display the freshness of the food;
s4: the freshness icon on the display panel is turned off or blinked to show that the food is not fresh, and S5 is performed;
s5: the control system detects whether a door body of the refrigerating compartment is opened or not through a door switch, and if yes, a buzzer buzzes; if not, the buzzer keeps a closed state.
10. The freshness control method of a constant temperature freshness refrigerator according to claim 9, wherein the odor threshold is 25%.
CN202210624782.0A 2022-06-02 2022-06-02 Constant-temperature fresh-keeping refrigerator, constant-temperature control method and fresh-keeping control method Pending CN114857834A (en)

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