CN112361689A - Special constant-temperature area of refrigerating chamber of refrigerator and control method thereof - Google Patents

Special constant-temperature area of refrigerating chamber of refrigerator and control method thereof Download PDF

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Publication number
CN112361689A
CN112361689A CN202011232043.4A CN202011232043A CN112361689A CN 112361689 A CN112361689 A CN 112361689A CN 202011232043 A CN202011232043 A CN 202011232043A CN 112361689 A CN112361689 A CN 112361689A
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China
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temperature
constant
special
area
refrigerating chamber
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CN202011232043.4A
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Chinese (zh)
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江峰
程琳
尚殿波
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Changhong Meiling Co Ltd
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Changhong Meiling Co Ltd
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Priority to CN202011232043.4A priority Critical patent/CN112361689A/en
Publication of CN112361689A publication Critical patent/CN112361689A/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
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • 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
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • 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
    • F25D25/00—Charging, supporting, and discharging the articles to be cooled
    • F25D25/02—Charging, supporting, and discharging the articles to be cooled by shelves
    • F25D25/024—Slidable shelves
    • F25D25/025—Drawers
    • 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

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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)

Abstract

The invention discloses a special constant-temperature area of a refrigerating chamber of a refrigerator and a control method thereof, and relates to the technical field of refrigerators. The invention comprises a refrigerating chamber and a freezing chamber; the inner wall of the refrigerated lining is connected with a shelf baffle; a clapboard is connected between the shelf baffle and the inner bottom wall of the refrigerated liner, and a special constant-temperature area and a special refrigerated area are enclosed among the shelf baffle, the clapboard and the inner bottom wall of the refrigerated liner; the refrigeration lining is provided with an air outlet communicated with the constant-temperature special area and an air return opening communicated with the refrigeration special area; the refrigerated lining is provided with a connecting air duct; the connecting air duct is respectively communicated with the air outlet and the air outlet of the refrigerating chamber; a double-opening air door is arranged in the connecting air channel; a constant temperature air channel component is arranged in the constant temperature special area. According to the invention, the special constant-temperature area is arranged in the refrigerating chamber, independent refrigeration of the special constant-temperature area is realized through the air outlet and the constant-temperature air channel assembly, and preferential refrigeration of the special constant-temperature area is realized through the control method, so that the problems of poor flexibility and uneven cold quantity distribution of the conventional special constant-temperature area, which cause large temperature fluctuation, are solved.

Description

Special constant-temperature area of refrigerating chamber of refrigerator and control method thereof
Technical Field
The invention belongs to the technical field of refrigerators, and particularly relates to a special constant-temperature area of a refrigerating chamber of a refrigerator and a control method thereof.
Background
The refrigerator compartment is divided into a refrigerating compartment, a freezing compartment, a temperature changing compartment and the like according to national standards. The temperature of the refrigerating chamber is 2-8 ℃ generally, and the refrigerating chamber is used for storing foods such as fruits and vegetables which do not need to be frozen. The freezing chamber is generally used for storing the meat to be frozen, and the temperature of the freezing chamber is divided into independent chambers with the temperature of less than or equal to-6 ℃ on a star level, less than or equal to-12 ℃ on a two star level, less than or equal to-18 ℃ on a three star level and the like according to the star level.
The temperature-changing chamber is an independent chamber, can be used as two or more chamber types, and the temperature of the chamber type can be independently controlled to meet the requirement of the temperature range of each chamber type.
The national standard makes requirements on the characteristic temperature of the compartment, but the following problems exist in the division of the refrigerator compartment: firstly, the refrigerating chamber, the freezing chamber or the temperature-changing chamber are independent chambers, so that the space flexibility is poor; secondly, when the compartment is refrigerated, because of refrigeration switching and defrosting heating periods, the cold quantity distribution is not fair, and the internal temperature fluctuation is overlarge due to the heat convection effect, so that the frozen food is defrozen.
Through market research, the meat is purchased between 0.5kg and 3kg at a time by a common family, and the meat is consumed in two weeks to one month. However, the existing meat fresh-keeping freezing has the following problems: 1. the temperature of the freezing chamber is too low, the meat is frozen too hard and is difficult to cut, and a long defrosting time is needed. 2. When meat is placed in the temperature-variable chamber, the surface of the meat is repeatedly frozen and iced under the heating influence of defrosting in the chamber, and the meat is easy to deteriorate. 3. The temperature-changing chamber is an independent chamber, and once the temperature is adjusted, other food types in the whole chamber are affected, so that the flexibility is poor. 5. Meat is putrefactive when placed in a refrigerator for up to 12 hours, and the meat is too soft and not suitable for cutting.
When the refrigerating chamber is provided with a special functional area below 0 ℃, the current market is generally realized in a sealing box mode, namely a completely sealed box body is arranged around the drawer of the special functional area, the mode ensures that the performance of the special area and the temperature of an adjacent area are not influenced by the special constant-temperature area, but the cost of a sealing box mold is high, and the material cost of the refrigerator is increased.
Disclosure of Invention
The invention aims to provide a special constant-temperature area of a refrigerating chamber of a refrigerator and a control method thereof.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a special constant-temperature zone of a refrigerating chamber of a refrigerator, which comprises the refrigerating chamber and a freezing chamber; the refrigeration compartment includes a refrigeration liner; the freezing chamber comprises a freezing lining; an evaporator assembly is arranged in the freezing lining; the inner wall of the refrigerated lining is fixedly connected with a shelf baffle; a clapboard is fixedly connected between the shelf baffle and the inner bottom wall of the refrigerated liner, and a special constant-temperature area and a special refrigerated area are enclosed among the shelf baffle, the clapboard and the inner bottom wall of the refrigerated liner;
the refrigeration lining is provided with an air outlet communicated with the constant-temperature special area and an air return inlet communicated with the refrigeration special area; the air return inlet is connected with an air return duct; the lower end of the air return duct is positioned at the bottom of the evaporator assembly; the refrigeration lining is provided with a connecting air channel communicated with the upper part of the evaporator assembly; the connecting air duct is respectively communicated with the air outlet and the refrigerating chamber air outlet; a double-opening air door is arranged in the connecting air duct;
storage drawers are arranged in the constant-temperature special area and the cold storage special area; a constant-temperature air channel assembly is arranged in the constant-temperature special area;
the constant-temperature air channel assembly comprises an air channel upper cover; the upper surface of the air duct upper cover is clamped with the lower surface of the shelf baffle; an air duct lower cover is clamped on the inner wall of the air duct upper cover, and a hollow structure is formed between the air duct upper cover and the air duct lower cover;
the lower surface of the air duct upper cover is fixedly connected with a heat-insulating layer; the side walls of the air duct upper cover are provided with flanges; a constant-temperature return air outlet is formed in one side, far away from the partition plate, of the air duct upper cover;
the upper surface of the air duct lower cover is provided with a constant-temperature air inlet which is communicated with the air outlet; the surface of the air duct lower cover is provided with a plurality of constant-temperature air outlets; the side wall of the storage drawer is provided with a right-angle flanging; the upper surface of the right-angle flanging is attached to the lower surface of the flanging.
Furthermore, two article placing partition plates are fixedly connected to the inner bottom surface of the refrigerated liner; two put the thing baffle and be located constant temperature special area and cold-stored special area respectively, put thing baffle upper surface and the laminating of storing drawer lower surface.
Furthermore, a drawer cover plate is arranged in the special refrigerating area; the drawer cover plate is fixedly connected with the lower surface of the shelf baffle; the lower surface of the drawer cover plate is attached to the upper surface of the right-angle flanging of the storage drawer.
Furthermore, the upper surface of the air duct lower cover is connected with a cold storage box; the cold accumulation box is filled with a cold accumulation agent.
Furthermore, sealing strips are fixedly connected to the upper cover of the air duct and one side of the drawer cover plate close to the refrigerator door body; the sealing strip is attached to the inner wall of the storage drawer.
Furthermore, the density of the constant-temperature air outlet on the air duct lower cover is gradually reduced from one side close to the refrigerator door body to the inside of the constant-temperature special area.
A control method for a constant-temperature special area of a refrigerating chamber of a refrigerator comprises the following steps:
the method comprises the following steps: setting the target temperature of the constant temperature special area as T and the target temperature of the refrigerating chamber as T3And the first threshold value of the constant temperature special area temperature is T1And the second threshold is T2；
Wherein the first threshold value is T1 and the second threshold value is T2Is a compressor stopping point, and T2＜t＜T1，T1-T2≤2℃；t＝-4.5℃～-2.5℃；
If the user selects the special constant-temperature area as the micro-freezing mode, executing a second step;
if the refrigerating chamber is set to the temperature T3When the temperature is less than or equal to 3 ℃ and the environmental temperature is less than H ℃ for more than X hours, executing a third step;
if the refrigeration system needs to enter the defrosting mode, executing a step four;
if the refrigerating chamber door is opened and closed, executing a fifth step;
step two: collecting the current temperature T in the constant-temperature special area; if T is less than T1If yes, executing the step six;
if T is greater than or equal to T1Judging whether the current evaporator temperature is lower than A ℃, if so, refrigerating the constant-temperature special area to a second preset threshold value T2Then, stopping refrigerating the constant-temperature special area;
if not, starting the compressor for refrigeration, and refrigerating the constant-temperature special area when the temperature of the evaporator is lower than A ℃ until the internal temperature of the constant-temperature special area reaches a second preset threshold value T2After the step six is finished, executing the step six;
step three: the target temperature of the constant-temperature special area is increased to T +1 ℃ for operation, and the target temperature of the refrigerating chamber is increased to T3Operating at +1 ℃, and executing the step six after the operation is finished;
step four: before the refrigerating system enters a defrosting mode, the refrigerating system forcibly refrigerates the constant-temperature special area until the internal temperature of the constant-temperature special area reaches T2After the temperature is below 3 ℃ below zero, entering a defrosting mode;
after defrosting is finished, the special constant-temperature area is preferentially refrigerated, and the internal temperature of the special constant-temperature area is refrigerated to T2Refrigerating the refrigerating chamber and the freezing chamber in sequence after the temperature is below 3 ℃ below zero;
step five: refrigerating the constant-temperature special area within 5 minutes after the refrigerating chamber door is closed, collecting the internal temperature of the current constant-temperature special area, detecting the internal temperature once every 10 seconds, collecting the internal temperature 30 times in total, and recording the temperature value collected each time as T'i；T′iRepresents the temperature value of the ith acquisition;
judging whether the variation delta T of the temperature of any two adjacent times is larger than Y, if not, executing the sixth step; if yes, adjusting the second threshold value T2 to-6 ℃ for operation, and executing the step six after the operation is carried out for 2 hours; namely delta T ═ T'i+1-T′iWhen | is > Y, the second threshold value T2 is adjusted to-6 ℃ for 2 hours.
Step six: carrying out temperature detection or refrigeration according to the sequence of a refrigerating chamber and a freezing chamber; and returning to the step one after the completion.
Further, X is 5-7 hours; the H is 14-16 ℃; .
Further, Y is 0.4-1.
Further, the temperature of A is-18 ℃ to-15 ℃.
The invention has the following beneficial effects:
according to the invention, the special constant-temperature area is arranged in the refrigerating chamber, and the independent refrigeration of the special constant-temperature area is realized through the connecting air duct, the air outlet and the constant-temperature air duct assembly, so that the space flexibility of the refrigerator is improved. Meanwhile, the refrigerator is in a better state, the constant-temperature special area is preferentially subjected to refrigeration regulation, and the situation that the constant-temperature special area is uneven in cold quantity distribution and large in temperature fluctuation due to refrigeration switching and defrosting is avoided. The storage quality of the food is effectively improved.
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 special constant-temperature zone of a refrigerating chamber of a refrigerator according to the present invention;
FIG. 2 is a side cross-sectional view of FIG. 1;
FIG. 3 is an enlarged view of the portion A in FIG. 2;
FIG. 4 is a schematic view of the interior of the refrigerator shown in FIG. 1 from a rear perspective;
FIG. 5 is an exploded view of the refrigerated liner, the thermostatic zone and the storage drawer;
FIG. 6 is a schematic bottom view of the structure of FIG. 5;
FIG. 7 is an exploded view of the structure of the constant temperature duct assembly;
FIG. 8 is a schematic diagram of the left side view of FIG. 7;
FIG. 9 is a schematic bottom view of the structure of FIG. 7;
FIG. 10 is a flow chart of a control method for a constant temperature special area of a refrigerating chamber of a refrigerator according to the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1-refrigerating chamber, 2-freezing chamber, 3-evaporator assembly, 4-constant temperature special area, 5-constant temperature air channel assembly, 6-cold storage box, 101-refrigerating lining, 102-shelf baffle plate, 103-partition plate, 104-refrigerating special area, 105-air return opening, 106-air return channel, 107-connecting air channel, 108-double open air door, 201-freezing lining, 401-air outlet, 402-storage drawer, 403-right angle flanging, 404-storage partition plate, 405-drawer cover plate, 406-sealing strip, 501-air channel upper cover, 502-air channel lower cover, 503-heat preservation layer, 504-flanging, 505-constant temperature air return outlet, 506-constant temperature air inlet and 507-constant temperature air outlet.
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.
Referring to fig. 1 and 2, the invention relates to a special constant temperature zone for a refrigerating chamber of a refrigerator, which comprises a refrigerating chamber 1 and a freezing chamber 2; the refrigerating compartment 1 includes a refrigerating liner 101; the freezing chamber 2 includes a freezing liner 201.
An evaporator assembly 3 is arranged in the freezing lining 201, and the evaporator assembly 3 comprises an evaporator, a refrigerating fan, a compressor and the like. Temperature sensors are installed inside the refrigerating chamber 1 and the freezing chamber 2, and at the evaporator position.
A shelf baffle plate 102 is fixedly connected to the inner wall of the refrigeration lining 101; shelf baffle 102 and cold-stored inside lining 101 accessible joint, and shelf baffle 102 and cold-stored inside lining 101 bottom wall fixedly connected with baffle 103 within a definite time, and shelf baffle 102 and baffle 103 become T type distribution, and the accessible is glued or the joint is connected, and encloses into a constant temperature special area 4 and a cold-stored special area 104 between shelf baffle 102 and baffle 103 and cold-stored inside lining 101 inner wall.
As shown in fig. 3 and 4, the refrigerated liner 101 is provided with an air outlet 401 communicated with the special constant temperature area 4, and an air return opening 105 communicated with the special refrigerated area 104; the air return opening 105 is connected with an air return duct 106; the lower end of the air return duct 106 is positioned at the bottom of the evaporator assembly 3, so as to realize air circulation.
Refrigerated lining 101 is provided with the linking wind channel 107 with the intercommunication of evaporator assembly 3 upper portion, and the compressor is opened, and when the evaporimeter produced refrigeration, arrange into linking wind channel 107 with cold wind through the refrigeration fan in. The connecting air duct 107 is respectively communicated with the air outlet 401 and the refrigerating chamber air outlet; a double-opening air door 108 is arranged in the connecting air duct 107; the air outlet 401 and the air outlet of the refrigerating chamber can be independently controlled through the double-open air door 108.
As shown in fig. 5 and 6, storage drawers 402 are disposed in both the isothermal section 4 and the refrigerated section 104; the sides of the partition 103 and the inner sides of the refrigerated liner 101 are provided with rails that connect to the storage drawer 402, thereby facilitating the movement of the storage drawer 402.
As shown in fig. 7-9, a constant temperature air duct assembly 5 is disposed within the constant temperature zone 4. The constant-temperature air duct assembly 5 comprises an air duct upper cover 501; the upper surface of the air duct upper cover 501 is clamped or bonded with the lower surface of the shelf baffle plate 102 or connected through bolts. An air duct lower cover 502 is clamped on the inner wall of the air duct upper cover 501, and a hollow structure is formed between the air duct upper cover 501 and the air duct lower cover 502; the bayonet socket has been seted up to wind channel upper cover 501 inner wall, and wind channel lower cover 502 outer wall is provided with the jack catch that corresponds with the bayonet socket, and inside hollow structure that is behind wind channel upper cover 501 and the joint of wind channel lower cover 502.
The lower surface of the air duct upper cover 501 is fixedly connected with the heat preservation layer 503, the heat preservation layer 503 can be made of foam or foam and the like and is adhered to the air duct upper cover 501, and the cold air prevented from entering can reduce the surface temperature of the shelf baffle plate 102 and influence the refrigerated food placed on the shelf baffle plate 102. The side walls of the air duct upper cover 501 are provided with flanges 504; a constant-temperature return air outlet 505 is formed in one side, away from the partition 103, of the air duct upper cover 501.
The upper surface of the air duct lower cover 502 is provided with a constant-temperature air inlet 506, and the constant-temperature air inlet 506 is communicated with the air outlet 401; the surface of the air duct lower cover 502 is provided with a plurality of constant temperature air outlets 507. The constant temperature air outlet 507 is a round hole, a rectangular hole or a strip structure, and the density of the constant temperature air outlet 507 on the air duct lower cover 502 is gradually reduced from one side close to the refrigerator door body to the inside of the constant temperature special area 4. Because the temperature loss of one side close to the refrigerator door body is faster, the quantity of the constant-temperature air outlets 507 is increased at the position close to the refrigerator door body, so that the refrigeration effect at the position is improved, and the uniformity of the temperature inside the constant-temperature special area 4 is ensured.
An air outlet nozzle can be arranged on the inner wall of the refrigeration lining 101 at the position of the air outlet 401, and the air outlet nozzle is in butt joint with the constant-temperature air inlet 506, so that cold air can accurately and quickly enter the air duct upper cover 501 and the air duct lower cover 502. The storage drawer 402 has a right angle flange 403 on the side wall; the upper surface of the right-angle flanging 403 is attached to the lower surface of the flanging 504, cold air enters the air duct upper cover 501 and the air duct lower cover 502 and enters the storage drawer 402 through the constant-temperature air outlet 507, and the right-angle flanging 403 is attached to the flanging 504, so that the cold air can be better sealed inside the storage drawer 402, and the improvement of the food freezing effect is facilitated. Meanwhile, after the heat exchange between the cold air entering the storage drawer 402 and the food is completed, the cold air is discharged through the constant-temperature return air outlet 505 and enters the return air duct 106 through the return air inlet 105 in the special refrigerating area 104, so that the whole air circulation is realized.
Because constant temperature return air export 505 is located the position of difference respectively with return-air inlet 105 for 4 exhaust air conditioning in constant temperature special area need only can reach the evaporimeter bottom through cold-stored special area 104, thereby increase 4 exhaust air conditioning flow path in constant temperature special area, improve its heat transfer effect, when the temperature of avoiding constant temperature special area 4 to set up was low excessively, air conditioning can lead to the fact the influence to the cold-stored food in cold-stored special area 104, takes place zero crossing's emergence. Thereby ensuring the food refrigeration effect in the refrigerated area 104.
Preferably, two storage partitions 404 are fixedly connected to the inner bottom surface of the refrigeration lining 101; two put thing baffle 404 and be located constant temperature special area 4 and cold-stored special area 104 respectively, put thing baffle 404 upper surface and the laminating of storing drawer 402 lower surface. The storage compartment 404 may be a thermal insulation panel, which improves the thermal insulation of the storage drawer 402. Meanwhile, the bottom surface in the refrigeration lining 101 can be set to be a blind groove structure with a concave structure, so that the heat insulation board can be placed in the blind groove, and the convenience of installation or disassembly maintenance is improved.
Meanwhile, the upper surface of the air duct lower cover 502 is connected with a cold storage box 6; the cold storage box 6 is filled with cold storage agent, the freezing point range of the cold storage agent is-6 ℃ to 0 ℃, and the cold storage box 6 is positioned in a hollow structure formed between the air duct upper cover 501 and the air duct lower cover 502, so that the surface of the cold storage box 6 can be fully swept by the entering cold air. The cold energy is preferentially stored in the cold storage agent, and when the temperature reaches the vicinity of the freezing point, the cold storage agent can release latent heat for keeping the temperature of the special constant-temperature area 4 stable. Install high sensitivity temperature sensor on the wind channel lower cover 502, high sensitivity temperature sensor surface is the metal material, wind channel lower cover 502 surface is provided with encloses the platelike structure who keeps off high sensitivity temperature sensor all around, avoids the direct cold wind contact of high sensitivity temperature sensor, and high sensitivity temperature sensor is located inside storage drawer 402, and the notch has been seted up to platelike structure, and high sensitivity temperature sensor passes through the notch and detects the inside air temperature of storage drawer 402.
In another preferred scheme, a drawer cover plate 405 is arranged in the special refrigerating area 104; the drawer cover plate 405 is fixedly connected with the lower surface of the shelf baffle plate 102 through bonding, clamping or bolts; the lower surface of the drawer cover plate 405 is attached to the upper surface of a right-angle flanging 403 of the storage drawer 402, the storage drawer 402 in the special refrigerating area 104 is sealed through the drawer cover plate 405, and the influence of cold air in the special constant-temperature area 4 on the refrigerated food in the special refrigerating area 104 is further avoided.
Meanwhile, the air duct upper cover 501 and one side of the drawer cover plate 405 close to the refrigerator door body are both fixedly connected with a sealing strip 406; the seal 406 is attached to the inner wall of the storage drawer 402 to improve the sealing of the storage drawer 402.
As shown in fig. 10, a method for controlling a special constant-temperature zone in a refrigerating chamber of a refrigerator, wherein the overall refrigeration priority level of the refrigerator is that a special constant-temperature zone 4 is refrigerated, then a refrigerating chamber 1 is refrigerated, and finally a freezing chamber 2 is refrigerated, specifically comprises the following steps:
the method comprises the following steps: the target temperature of the special constant-temperature area 4 is set as T, and the target temperature of the refrigerating chamber 1 is set as T3And the first threshold value of the temperature of the constant temperature special area 4 is T1And the second threshold is T2；
Wherein the first threshold value is T1 and the second threshold value is T2Is a compressor stopping point, and T2＜t＜T1，T1-T2Less than or equal to 2 ℃; t-4.5 ℃ to-2.5 ℃, e.g. -3.5 ℃.
If the user selects the special constant-temperature area 4 as the micro-freezing mode, executing a second step;
if the refrigerating chamber 1 is set to the temperature T3When the temperature is less than or equal to 3 ℃ and the environmental temperature is less than H ℃ for more than X hours, executing a third step; x is 5-7 hours, such as X is 6 hours; h is 14-16 ℃; such as H16 ℃.
If the refrigeration system needs to enter the defrosting mode, executing a step four;
if the refrigerating chamber door is opened and closed, executing a fifth step; the system detects the action of opening and closing the refrigerating chamber door through the door switch closer.
The system preferably confirms the conditions of the special constant-temperature area 4, and if the regulation is finished and the next action on the special constant-temperature area 4 is not needed, the system detects whether the refrigerating chamber 1 needs to be refrigerated or not and finally confirms whether the refrigerating chamber 2 needs to be refrigerated or not.
Step two: acquiring the current temperature T inside the special constant-temperature area 4 through a high-sensitivity temperature sensor; if T is less than T1If yes, executing the step six;
if T is greater than or equal to T1And then, acquiring the temperature of the evaporator at the moment by using a temperature sensor, and judging whether the current evaporator temperature is lower than A ℃, wherein A is-18 ℃ to-15 ℃, and if A is-14.5 ℃.
If yes, the compressor and the refrigeration fan are started, the double-opening air door 108 controls cold air to enter the air outlet 401, and the special constant-temperature area 4 is refrigerated to a second preset threshold value T2And then, the compressor and the refrigerating fan stop, and the refrigeration of the special constant-temperature area 4 is stopped.
If not, starting the compressor for refrigerating, refrigerating the special constant-temperature area 4 until the temperature of the evaporator is lower than-14.5 ℃, and refrigerating the special constant-temperature area 4 until the internal temperature of the special constant-temperature area 4 reaches a second preset threshold value T2After the step six is finished, executing the step six;
step three: when the set temperature T of the refrigerating compartment 13≤3℃，T3The temperature is higher than 0 ℃, and the environment temperature sensor detects that the environment temperature lasts for more than 6 hours and is lower than 16 ℃, the target temperature of the special constant-temperature zone 4 at the moment is increased to T +1 ℃ for operation, namely T is-2.5 ℃, and the target temperature of the refrigerating chamber 1 is increased to T3Operating at +1 ℃, and executing the step six after the operation is finished;
step four: before the refrigerating system enters the defrosting mode, the special constant-temperature area 4 is forcibly refrigerated until the temperature inside the special constant-temperature area 4 reaches T2After the temperature is below-3 ℃, entering a defrosting mode.
After defrosting is finished, the special constant-temperature area 4 is preferentially refrigerated, and the internal temperature of the special constant-temperature area 4 is refrigerated to T2After-3 ℃, the refrigerating chamber 1 and the freezing chamber 2 are sequentially refrigerated.
Step five: when the system detects that the door of the refrigerating chamber has opening and closing actions, the constant-temperature special area 4 is refrigerated within 5 minutes after the refrigerating chamber is closed, the internal temperature of the constant-temperature special area 4 is collected at the same time, the detection is carried out once every 10 seconds and is collected for 30 times in total, and the temperature value collected every time is recorded as T'i；T′iRepresents the temperature value of the ith acquisition; such as T′1I.e. the temperature, T ', collected at the first 10 seconds'2I.e. the temperature collected during the second 10 seconds, and so on.
Judging whether the variation delta T of the temperature of any two adjacent times is greater than Y, wherein Y is 0.4-1 ℃, if Y is 0.5 ℃, executing a sixth step if not; if yes, adjusting the second threshold value T2 to-6 ℃ for operation, and executing the step six after the operation is carried out for 2 hours;
namely delta T ═ T'2-T′1| is more than 0.5 ℃ or any two adjacent temperature variation amounts | T'i+1-T′iWhen the temperature is higher than 0.5 ℃, the temperature fluctuation in the special constant-temperature area 4 is large, and a large amount of heat load is determined to be put in, so that the second threshold value T2 is adjusted to-6 ℃ for operation, and the operation is quitted after 2 hours of operation, and the step six is executed;
step six: after the optimal detection and the optimal refrigeration of the special constant-temperature area 4 are finished, the temperature detection or the refrigeration is carried out according to the sequence of the refrigerating chamber 1 and the refrigerating chamber 2, and the step I is returned after the temperature detection or the refrigeration is finished.
Namely, if the temperature in the refrigerating chamber 1 reaches the starting point, refrigerating the refrigerating chamber 1, after the temperature is detected, detecting the freezing chamber 2, if the refrigerating is needed, refrigerating, and if the refrigerating is not needed, returning to the step one, and continuously and sequentially carrying out refrigerating control according to the sequence of the special constant-temperature area 4, the refrigerating chamber 1 and the freezing chamber 2.
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. A special constant-temperature zone for a refrigerating chamber of a refrigerator comprises a refrigerating chamber (1) and a freezing chamber (2); the refrigerating compartment (1) comprises a refrigerating liner (101); the freezing chamber (2) comprises a freezing lining (201); the method is characterized in that:
an evaporator assembly (3) is arranged in the freezing lining (201); a shelf baffle plate (102) is fixedly connected to the inner wall of the refrigeration lining (101); a clapboard (103) is fixedly connected between the shelf baffle plate (102) and the inner bottom wall of the refrigeration lining (101), and a special constant-temperature area (4) and a special refrigeration area (104) are enclosed among the shelf baffle plate (102), the clapboard (103) and the inner wall of the refrigeration lining (101);
the refrigeration lining (101) is provided with an air outlet (401) communicated with the special constant-temperature area (4) and an air return opening (105) communicated with the special refrigeration area (104); the air return opening (105) is connected with an air return duct (106); the lower end of the air return duct (106) is positioned at the bottom of the evaporator assembly (3);
the refrigeration lining (101) is provided with a connecting air duct (107) communicated with the upper part of the evaporator assembly (3); the connecting air duct (107) is respectively communicated with the air outlet (401) and the air outlet of the refrigerating chamber; a double-opening air door (108) is arranged in the connecting air duct (107);
storage drawers (402) are arranged in the constant-temperature special area (4) and the cold storage special area (104); a constant-temperature air duct component (5) is arranged in the constant-temperature special area (4);
the constant-temperature air channel assembly (5) comprises an air channel upper cover (501); the upper surface of the air duct upper cover (501) is clamped with the lower surface of the shelf baffle (102); an air duct lower cover (502) is clamped on the inner wall of the air duct upper cover (501), and a hollow structure is formed between the air duct upper cover (501) and the air duct lower cover (502);
the lower surface of the air duct upper cover (501) is fixedly connected with a heat-insulating layer (503); the side walls of the air duct upper cover (501) are provided with flanges (504); a constant-temperature return air outlet (505) is formed in one side, away from the partition plate (103), of the air duct upper cover (501);
the upper surface of the air duct lower cover (502) is provided with a constant-temperature air inlet (506), and the constant-temperature air inlet (506) is communicated with the air outlet (401); a plurality of constant-temperature air outlets (507) are formed in the surface of the air duct lower cover (502);
the side wall of the storage drawer (402) is provided with a right-angle flanging (403); the upper surface of the right-angle flanging (403) is attached to the lower surface of the flanging (504).
2. The special constant-temperature zone for the refrigerating chamber of the refrigerator as claimed in claim 1, wherein two storage partitions (404) are fixedly connected to the inner bottom surface of the refrigerating liner (101); the two storage partition plates (404) are respectively positioned in the constant-temperature special area (4) and the cold-storage special area (104), and the upper surfaces of the storage partition plates (404) are attached to the lower surface of the storage drawer (402).
3. The special constant temperature zone for the refrigerating chamber of the refrigerator as claimed in claim 1 or 2, wherein a drawer cover plate (405) is arranged in the special refrigerating chamber (104); the drawer cover plate (405) is fixedly connected with the lower surface of the shelf baffle plate (102); the lower surface of the drawer cover plate (405) is attached to the upper surface of a right-angle flanging (403) of the storage drawer (402).
4. The special constant-temperature area for the refrigerating chamber of the refrigerator as claimed in claim 1 or 2, wherein the upper surface of the air duct lower cover (502) is connected with a cold storage box (6); the cold storage box (6) is filled with cold storage agent.
5. The special constant-temperature area for the refrigerating chamber of the refrigerator as claimed in claim 3, wherein sealing strips (406) are fixedly connected to one sides of the air duct upper cover (501) and the drawer cover plate (405) close to the refrigerator door body; the sealing strip (406) is attached to the inner wall of the storage drawer (402).
6. The special constant-temperature area for the refrigerating chamber of the refrigerator as claimed in claim 1, wherein the density of the constant-temperature air outlet (507) on the air duct lower cover (502) is gradually reduced from the side close to the refrigerator door body to the inside of the special constant-temperature area (4).
7. A control method for a constant-temperature special area of a refrigerating chamber of a refrigerator is characterized by comprising the following steps:
the method comprises the following steps: the target temperature of the special constant-temperature area (4) is set as T, and the target temperature of the refrigerating chamber (1) is set as T3And the first threshold value of the temperature of the constant temperature special area (4) is T1And the second threshold is T2；
Wherein the first threshold value is T1 and the second threshold value is T2Is a compressor stopping point, and T2＜t＜T1，T1-T2≤2℃；t＝-4.5℃～-2.5℃；
If the user selects the special constant-temperature area (4) to be in the micro-freezing mode, executing a second step;
if the refrigerating chamber (1) is set to the temperature T3When the temperature is less than or equal to 3 ℃ and the environmental temperature is less than H ℃ for more than X hours, executing a third step;
if the refrigeration system needs to enter the defrosting mode, executing a step four;
if the refrigerating chamber door is opened and closed, executing a fifth step;
step two: collecting the current temperature T in the constant-temperature special area (4);
if T is less than T1If yes, executing the step six;
if T is greater than or equal to T1Judging whether the current evaporator temperature is lower than A ℃, if so, refrigerating the constant-temperature special area (4) to a second preset threshold value T2Then, stopping refrigerating the special constant-temperature area (4);
if not, starting the compressor for refrigeration, and refrigerating the special constant-temperature area (4) when the temperature of the evaporator is lower than A ℃ until the internal temperature of the special constant-temperature area (4) reaches a second preset threshold value T2After the step six is finished, executing the step six;
step three: the target temperature of the constant temperature special area (4) at the moment is raised to T +1 ℃ for operation, and the target temperature of the refrigerating chamber (1) is raised to T3Run at +1 ℃ and after completionStep six;
step four: before the refrigerating system enters a defrosting mode, the special constant-temperature area (4) is forcibly refrigerated until the internal temperature of the special constant-temperature area (4) reaches T2After the temperature is below 3 ℃ below zero, entering a defrosting mode;
after defrosting is finished, the special constant-temperature area (4) is preferentially refrigerated, and the internal temperature of the special constant-temperature area (4) is refrigerated to T2Refrigerating the refrigerating chamber (1) and the freezing chamber (2) in sequence after the temperature is below 3 ℃;
step five: refrigerating the special constant-temperature area (4) within 5 minutes after the refrigerating chamber door is closed, collecting the internal temperature of the current special constant-temperature area (4), and detecting once every 10 seconds for 30 times in total;
judging whether the variation delta T of the temperature of any two adjacent times is larger than Y, if not, executing the sixth step; if yes, adjusting the second threshold value T2 to-6 ℃ for operation, and executing the step six after the operation is carried out for 2 hours;
step six: temperature detection or refrigeration is carried out according to the sequence of the refrigerating chamber (1) and the freezing chamber (2); and returning to the step one after the completion.
8. The method for controlling the special constant-temperature area of the refrigerating chamber of the refrigerator as claimed in claim 7, wherein X is 5-7 hours; the H is 14-16 ℃.
9. The method as claimed in claim 7, wherein Y is 0.4-1.
10. The method as claimed in claim 7, wherein A is between-18 ℃ and-15 ℃.
CN202011232043.4A 2020-11-06 2020-11-06 Special constant-temperature area of refrigerating chamber of refrigerator and control method thereof Pending CN112361689A (en)

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CN114719537B (en) * 2022-04-13 2024-03-08 澳柯玛股份有限公司 Constant-temperature sealing drawer and working method

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Application publication date: 20210212