CN111412721B

CN111412721B - Refrigerator with a door

Info

Publication number: CN111412721B
Application number: CN202010238239.8A
Authority: CN
Inventors: 钱梅双; 刘畅; 胡卓鸣; 李格格; 罗平平; 张勇飞
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2021-05-25
Anticipated expiration: 2040-03-30
Also published as: CN111412721A

Abstract

The invention discloses a refrigerator, comprising: the refrigerator evaporator air outlet duct is communicated to a second air duct in the drawer and a first air duct communicated to the compartment, the first air duct and the second air duct are respectively disconnected, and the air door device is controlled to respectively open and close the first air duct and the second air duct according to set temperature and set humidity corresponding to preset function options. According to the invention, the drawer is closed, and the air door device is arranged to lead cold air to the drawer or the compartment directly, so that the humidity and the temperature are accurately controllable, and the functions of fruit and vegetable fresh keeping, dry goods storage, short-term meat storage, long-term meat supercooling storage and the like can be realized in one compartment.

Description

Refrigerator with a door

Technical Field

The invention relates to the technical field of refrigerator preservation, in particular to a refrigerator.

Background

The traditional refrigerator generally adopts forced convection circulation of cold air to indirectly cool food, so that the humidity of a refrigerating chamber of the traditional refrigerator can only be maintained at about 50% or even lower, the humidity cannot meet the requirement of a user on storing fruits and vegetables, the independent chambers of some refrigerators can realize adjustment of different humidity to store fruits and vegetables, the independent chambers of some refrigerators can realize storage of dry goods, but the fruits and vegetables, the dry goods, the meat stored in a short term and the frozen meat cannot be selectively stored in the same chamber according to the requirement of the user.

Disclosure of Invention

The invention provides a refrigerator for solving the technical problem of single function caused by the fact that humidity and temperature cannot be controlled simultaneously by a single chamber in the prior art.

The technical scheme adopted by the invention is as follows:

the invention provides a refrigerator, comprising: the refrigerator evaporator air outlet duct is communicated to a second air duct in the drawer and a first air duct communicated to the compartment, the first air duct and the second air duct are respectively disconnected, and the air door device is controlled to respectively open and close the first air duct and the second air duct according to set temperature and set humidity corresponding to preset function options.

Furthermore, a drawer cover plate for sealing the drawer is arranged on the drawer. And a temperature sensor is arranged on the drawer cover plate. The bottom of the drawer is provided with a temperature equalizing plate.

Furthermore, a spraying air device communicated with the first air channel to spray the drawer is arranged in the chamber of the refrigerator.

Specifically, the preset function options include: fruit and vegetable functions, dry storage functions, meat short-term storage functions, supercooling storage functions and instant freezing storage functions.

When the preset function option is selected as the fruit and vegetable function or the dry storage function, the controller controls the air door device to periodically switch the second air channel to adjust the humidity, and switches the first air channel to maintain the room temperature in the corresponding preset temperature range.

The fruit and vegetable functions comprise a plurality of humidity gears. And when the preset humidity corresponding to the preset function option is larger, the opening time corresponding to the second air duct is shorter and the closing time is longer.

Further, the opening time and the closing time of the second air duct range from 0 to 1 hour.

The concrete control corresponding to the instant freezing storage function comprises the following steps: closing the second air duct, controlling the opening and closing of the first air duct according to the preset opening temperature and closing temperature, reducing the preset opening temperature and closing temperature after maintaining the preset cooling time, maintaining the second preset cooling time until the target opening temperature and closing temperature are reduced, and maintaining the target preset cooling time; closing the first air channel, increasing the rotating speed of the compressor to a second preset rotating speed for operation, controlling the opening and closing of the second air channel according to a preset second air door opening temperature and a second air door closing temperature, and maintaining the room temperature for a preset supercooling release time; and closing the second air duct, reducing the rotating speed of the compressor to operate at a first preset rotating speed, and controlling the opening and closing of the first air duct according to the preset conventional refrigeration opening temperature and the conventional refrigeration closing temperature.

Compared with the prior art, the invention seals the drawer and simultaneously arranges the air door device to lead the cold air to the drawer or the compartment so as to ensure that the humidity and the temperature are accurately controllable, thereby simultaneously realizing the functions of fruit and vegetable fresh keeping, dry goods storage, short-term meat storage, long-term meat supercooling storage and the like in one compartment.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described 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 to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic view of a refrigerator compartment according to an embodiment of the present invention;

FIG. 2 is a schematic view of the damper assembly according to the embodiment of the present invention;

FIG. 3 is a schematic structural view of a wind spray device according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a drawer cover according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a drawer according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The principles and construction of the present invention will be described in detail below with reference to the drawings and examples.

As shown in fig. 1 to 5, the present invention provides a refrigerator, which includes a drawer 1, a spray air device 2, a first air duct, a second air duct, an air door device 3, and a controller, wherein an upper side surface of the drawer 1 is opened and provided with a drawer cover plate 11 for sealing the drawer, the second air duct communicates an air outlet duct of a refrigerator evaporator to the drawer 1, the first air duct communicates the air outlet duct of the refrigerator evaporator to the compartment 4, the air door device 3 can respectively open and close the first air duct and the second air duct, specifically, the first air duct is opened and closed by a first air door 31, the second air duct is opened and closed by a second air door 32, and the controller can respectively open and close the first air duct and the second air duct according to a set temperature and a set humidity corresponding to a preset function option, so as to maintain the humidity and the temperature in the drawer within a set range. Due to the controllable humidity and temperature, the invention can simultaneously realize the functions of fruit and vegetable fresh-keeping, dry goods storage, short-term meat storage and long-term meat supercooling storage in one compartment. For example, the fruit and vegetable fresh-keeping with different humidity and different storage requirements can be realized in one chamber.

In a specific embodiment, a temperature sensor is arranged on one side of the drawer cover plate 11 facing the inside of the drawer 1, so that the real-time temperature in the compartment can be accurately known. The air spraying device 2 is arranged in the chamber 4 of the refrigerator and positioned above the drawer cover plate 11, the first air channel is communicated to the chamber and directly communicated with the air spraying device 2, so that the cold air in the first air channel from the refrigerator evaporator is sprayed out from the air spraying device 2, and one side of the air spraying device 2 facing the drawer cover plate 11 is provided with a plurality of air outlets which are uniformly distributed, so that the drawer 1 can be uniformly cooled. The side of the drawer 1 is provided with an opening 12, the drawer cover plate is provided with an air duct interface 111 matched with the opening, and the air duct interface 111 can be communicated with a second air duct, so that cold air can be directly blown into the drawer, and meanwhile, the drawer can be normally drawn out without affecting the connection with the air duct. And the bottom of the drawer is provided with a temperature-equalizing plate which can be made of aluminum.

The preset function options include: fruit and vegetable functions, dry storage functions, meat short-term storage functions, supercooling storage functions and instant freezing storage functions. When the preset function option is selected as the fruit and vegetable function or the dry storage function, the controller controls the air door device to periodically switch the second air channel to adjust the humidity, and simultaneously switches the first air channel to maintain the temperature within the corresponding preset temperature range. Make the fruit vegetables function can include a plurality of humidity gears, when predetermineeing humidity when big more, the opening time that the second wind channel corresponds is short the closing time more long more, makes air conditioning spout as far as possible from spraying the wind device and cools down.

The concrete control corresponding to the instant freezing storage function comprises the following steps: closing the second air channel, operating the compressor at a first preset rotating speed, controlling the opening and closing of the first air channel according to a preset opening temperature and a preset closing temperature, reducing the preset opening temperature and the preset closing temperature after maintaining the preset cooling time, and maintaining the second preset cooling time until the target opening temperature and the target closing temperature are reduced and the target preset cooling time is maintained; closing the first air channel, increasing the rotating speed of the compressor to a second preset rotating speed for operation, controlling the opening and closing of the second air channel according to a preset second air door opening temperature and a second air door closing temperature, and maintaining the room temperature for a preset supercooling release time; and closing the second air duct, reducing the rotating speed of the compressor to operate at a first preset rotating speed, controlling the opening and closing of the first air duct according to the preset conventional refrigeration opening temperature and the conventional refrigeration closing temperature, and maintaining the room temperature within the preset conventional refrigeration temperature range.

The following specifically exemplifies the preset function options:

the fruit vegetables function can be divided into high humidity, medium humidity, low humidity third grade, and the user can select the humidity of different gears according to the requirement of storage fruit vegetables to humidity, for example need select high humidity gear to the vegetables of leaf vegetables, takes medium humidity gear to most vegetables and fruits, can take low humidity gear to vegetables such as onion, garlic.

And in a high-humidity gear, the humidity inside the drawer is controlled according to the relative humidity of more than 90 percent. The second air door is opened intermittently, the opening time is t1, the closing time is t1', and the humidity is kept while the temperature is reduced through the periodic switch. In a middle-humidity gear, the humidity inside the drawer is controlled according to the relative humidity of 80-90%. In the middle-wet gear, the opening time of the second air door is t2, and the closing time is t 2'. In a low-humidity gear, the humidity inside the drawer is controlled according to the relative humidity of 70-80%. The second air door is opened for a period of time t3 and closed for a period of time t 3'. The specific time can be 0 < t1 < t2 < t3 < 1h, 1h > t1' > t2' > t3' > 0.

In the above-mentioned gear with humidity, the first damper opens and closes at a specific temperature node to maintain the temperature of the compartment within a corresponding temperature range. When the user selects the fruit and vegetable fresh-keeping function, the compartment is controlled according to the temperature T1'', and the temperature T1'' is more than or equal to 2 and less than or equal to 5 ℃.

And when the user selects the dry storage function, the second air door is intermittently opened, the total opening time is T4, T3 is more than T4, the humidity in the compartment is less than 65%, and the temperature of the compartment is controlled according to T2', wherein T2' is more than or equal to 2 and less than or equal to 5 ℃.

When a user selects short-term storage of meat, the compartment is controlled according to T3'', T3'' is more than or equal to 0 and less than or equal to 2 ℃, the meat can be stored for 4 days when the short-term storage of the meat is selected, and the first air door and the second air door can be opened and closed according to the compartment temperature.

When the user selects the supercooling preservation function, the meat can be preserved for two weeks, the compartment is cooled by stages by controlling the air door device, the opening and closing of the first air door are mainly controlled, the second air door is closed, the drawer and the cover plate are ensured to form a closed space, and cold air is reduced from being directly blown to food.

When the user selects the instant freezing storage function, the temperature is controlled in 3 stages. The three stages are a supercooling cooling stage, a supercooling relieving stage and a conventional refrigeration storage stage.

In the stage of supercooling and cooling, the compartment is cooled by stages through a control device, and the method specifically comprises the following steps:

step one, closing a second air door, controlling a compressor to operate at a maximum rotating speed M2, controlling a refrigerating fan to operate at a rotating speed S1, operating for t1 time to cool a compartment, detecting the real-time temperature of the compartment through a temperature sensor, and opening the first air door when the temperature of the compartment reaches a first opening temperature point TON1 within t1 time; when the compartment temperature reaches the first shutdown temperature point TOFF1, the first damper is closed.

Wherein 3800rpm is not less than M2 and not more than 4500rpm, T1 is more than 0 and not more than 8h, TON1= T1+ TB1/2, TOFF1= TON 1-TB 2/2; TB1 and TB2 are known parameters, and TB1 indicates the floating temperature of the starting point of the middle chamber in the starting process of the compressor; TB2 denotes inter-compartment on-off temperature difference; the step is that the temperature of the compartment is uniformly reduced or increased to be more than 0 ℃ so as to be convenient for uniformly reducing the overall temperature later, and the temperature inside and outside the food can be uniformly reduced.

Step two, the compressor operates at the rotating speed M1, the refrigerating fan operates at the rotating speed S1, the compartment is cooled and operates at the preset temperature T2, and the compartment operates for T2 time; when the compartment temperature reaches a second opening temperature point TON2, opening the first damper; when the compartment temperature reaches a second shutdown temperature point TOFF2, closing the first damper; wherein TON2= T2+ TB1/2, TOFF2= TON 2-TB 2/2.

Thirdly, the compressor runs at the rotating speed M1, the refrigerating fan runs at the rotating speed S1 and runs at the preset temperature T3, and the running time is set to be T3; when the compartment temperature reaches a third opening temperature point TON3, opening the first air door; when the compartment temperature reaches a third shutdown temperature point TOFF3, closing the first damper; wherein TON3= T3+ TB1/2, TOFF3= TON 3-TB 2/2;

step four, the compressor runs at the rotating speed M1, the refrigerating fan runs at the rotating speed S1 and runs at the preset temperature T4, and the running time is set to be T4; when the compartment temperature reaches a fourth opening temperature point TON4, opening a first air door of the compartment; when the compartment temperature reaches the fourth shutdown temperature point TOFF4, the damper of the compartment is closed; wherein TON4= T4+ TB1/2, TOFF4= TON 4-TB 2/2;

step five, the compressor runs at the rotating speed M1, the refrigerating fan runs at the rotating speed S1 and runs at the preset temperature T5, and the running time is set to be T5; when the compartment temperature reaches a fifth opening temperature point TON5, opening a first damper of the compartment; when the compartment temperature reaches a fifth shutdown temperature point TOFF5, closing the first damper; wherein TON5= T5+ TB1/2, TOFF5= TON 5-TB 2/2;

sixthly, the compressor runs at the rotating speed M1, the refrigerating fan runs at the rotating speed S1 and runs at the preset temperature T6, and the running time is set to be T6; when the compartment temperature reaches a sixth opening temperature point TON6, opening a first damper of the compartment; when the compartment temperature reaches a sixth shutdown temperature point TOFF6, closing the first damper; wherein TON6= T6+ TB1/2, TOFF6= TON 6-TB 2/2;

step seven, the compressor runs at the rotating speed M1, the refrigerating fan runs at the rotating speed S1 and runs at the preset temperature T7, and the running time is set to be T7; when the compartment temperature reaches a seventh opening temperature point TON7, opening a first damper of the compartment; when the compartment temperature reaches a seventh shutdown temperature point TOFF7, closing the first damper; wherein TON7= T7+ TB1/2, TOFF7= TON 7-TB 2/2;

step eight, the compressor runs at the rotating speed M1, the refrigerating fan runs at the rotating speed S1 and runs at the preset temperature T8, and the running time is set to be T8; when the compartment temperature reaches the eighth opening temperature point TON8, opening the first damper of the compartment; when the compartment temperature reaches an eighth shutdown temperature point TOFF8, closing the first damper; wherein TON8= T8+ TB1/2, TOFF8= TON 8-TB 2/2.

Wherein T1 > T2 > T3 > T4. > T8; t1, t2.. t8 > 0h, n > 1, n is an integer.

2≥T1＞0℃；0≥T2＞-1℃;-1≥T3＞-2℃;-2≥T4＞-3℃;-3≥T5＞-4℃;-4≥T6＞-5℃;-5≥T7＞-6℃;-7≥T8＞-8℃。

3≥t1＞0h；2≥t2＞0h；1≥t3＞0h；1≥t4＞0h；0.5≥t5＞0h；0.5≥t6＞0h；0.5≥t7＞0h；0.5≥t8＞0h。

In the supercooling relieving stage, the first air door is closed, the second air door is opened, the compressor runs at the maximum rotating speed M2, the freezing fan runs at the rotating speed S1 and runs according to the preset temperature T ', the maximum cold air is supplied to the food, and when the room temperature reaches the opening temperature point T' ON, the second air door is opened; when the compartment temperature reaches the shutdown temperature point T' OFF, closing the second air door; wherein T ' ON = T ' + TB1/2, T ' OFF = T ' ON-TB 2/2 running time is set as T, -18 ≧ T ' ≧ 40 ℃, 10h ≧ T > 0 h; this ensures that as much water as possible in the supercooled food product instantaneously forms ice crystals, rapidly passing through the largest ice crystal generation zone.

In the normal refrigeration storage stage, the first air door is opened, the second air door is closed, and the chamber in the normal storage stage is controlled according to T. Controlling the compressor to operate at a rotating speed M1, controlling the refrigerating fan to operate at a rotating speed S1, operating according to a preset temperature T, and opening an air door of the compartment when the temperature of the greenhouse reaches an opening temperature point TON; when the compartment temperature reaches a shutdown temperature point TOFF, closing a ventilation door of the compartment; wherein TON = T + TB1/2, TOFF = TON-TB 2/2; t is more than or equal to-7 and less than 0 ℃.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A refrigerator, comprising: the drawer capable of being sealed in the compartment is characterized by further comprising a second air channel and a first air channel, wherein the second air channel is communicated with an air outlet air channel of a refrigerator evaporator in the drawer, the first air channel is communicated with the first air channel of the compartment, the first air channel and the second air channel are respectively disconnected by an air door device, the air door device is controlled to respectively open and close the first air channel and the second air channel according to set temperature and set humidity corresponding to preset function options, a spray air device communicated with the first air channel and used for spraying the drawer is arranged in the compartment of the refrigerator, a drawer cover plate for sealing the drawer is arranged on the drawer, and a plurality of air outlets are formed in one side, facing the drawer cover plate, of the spray air device.

2. The refrigerator as claimed in claim 1, wherein a temperature sensor is provided on the drawer cover.

3. The refrigerator as claimed in claim 1, wherein a temperature uniforming plate is provided in the drawer.

4. The refrigerator as claimed in claim 1, wherein the preset function option comprises: fruit and vegetable functions, dry storage functions, meat short-term storage functions, supercooling storage functions and instant freezing storage functions.

5. The refrigerator as claimed in claim 4, wherein when the preset function option is selected as the fruit and vegetable function or the dry storage function, the controller controls the damper device to periodically open and close the second air duct to adjust the humidity, and controls the damper device to open and close the first air duct to maintain the compartment temperature within the corresponding preset temperature range.

6. The refrigerator of claim 5, wherein the fruit and vegetable functions include a plurality of humidity levels.

7. The refrigerator as claimed in claim 6, wherein the second duct has a shorter opening time and a longer closing time when the preset humidity corresponding to the preset function option is higher.

8. The refrigerator of claim 5, wherein the specific control of the flash storing function comprises: closing the second air duct, controlling the opening and closing of the first air duct according to the preset opening temperature and closing temperature, reducing the preset opening temperature and closing temperature after maintaining the preset cooling time, maintaining the second preset cooling time until the target opening temperature and closing temperature are reduced, and maintaining the target preset cooling time; closing the first air channel, increasing the rotating speed of the compressor, controlling the opening and closing of the second air channel according to the preset opening temperature and closing temperature of the second air door, and maintaining the room temperature for the preset supercooling release time; and closing the second air duct, reducing the rotating speed of the compressor to operate at a first preset rotating speed, and controlling the opening and closing of the first air duct according to the preset conventional refrigeration opening temperature and the conventional refrigeration closing temperature.