CN113124603A - Refrigerator air curtain control method - Google Patents
Refrigerator air curtain control method Download PDFInfo
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- CN113124603A CN113124603A CN201911420026.0A CN201911420026A CN113124603A CN 113124603 A CN113124603 A CN 113124603A CN 201911420026 A CN201911420026 A CN 201911420026A CN 113124603 A CN113124603 A CN 113124603A
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- 238000000034 method Methods 0.000 title claims abstract description 45
- 238000001704 evaporation Methods 0.000 claims abstract description 47
- 230000008020 evaporation Effects 0.000 claims abstract description 47
- 238000007664 blowing Methods 0.000 claims description 16
- 238000005057 refrigeration Methods 0.000 description 19
- 230000000694 effects Effects 0.000 description 5
- 238000004378 air conditioning Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000035807 sensation Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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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
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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
- 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
- F25D17/042—Air treating means within refrigerated spaces
- F25D17/045—Air flow control arrangements
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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
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/003—Arrangement or mounting of control or safety devices for movable devices
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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
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/005—Mounting of control devices
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- 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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- Combustion & Propulsion (AREA)
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- 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 refrigerator air curtain control method, wherein a refrigerator comprises a cabinet body and a door body, and the refrigerator air curtain control method comprises the following steps: detecting whether the door body is opened; when the door body is detected to be opened, closing the first air supply device and the first air return device; detecting the actual temperature in the cabinet body in real time, calculating the temperature difference between the actual temperature and the set temperature, and timing the door opening time; when the temperature difference is greater than a preset temperature threshold value or the door opening time is greater than a first preset door opening time, controlling the evaporation fan and the compressor to run, and opening the first air supply device and the first air return device to enable the first air supply device and the first air return device to form an air curtain at the cabinet opening; and if the door opening time is longer than the second preset door opening time, the evaporation fan and the compressor run according to the state when the door body is closed, wherein the second preset door opening time is longer than the first preset door opening time. The invention solves the problem that the temperature fluctuation in the refrigerator body is large when the cabinet door of the refrigerator is opened.
Description
Technical Field
The invention relates to the technical field of horizontal air-cooled refrigerators, in particular to a refrigerator air curtain control method.
Background
At present, refrigeration equipment (refrigerators, freezers and the like) is a common electric appliance in daily life of people, and freezers are divided into horizontal freezers and vertical freezers, and the horizontal freezers are widely used due to large storage capacity. The conventional horizontal refrigerator usually adopts a direct cooling mode to refrigerate, but frost is easily formed in the refrigerator body in the using process, and the air-cooled horizontal refrigerator is gradually popularized in order to reduce the frost formed in the refrigerator body.
The horizontal air-cooled refrigerator realizes horizontal air-cooled refrigeration by arranging an air supply device and an air return device, wherein the air supply device blows air with lower temperature into the storage compartment to refrigerate articles stored in the storage compartment, and then the air with higher temperature is sucked away by the air return device, and the air with lower temperature is usually provided by a refrigeration system in refrigeration equipment.
In the in-service use process, the freezer evaporation fan stop rotating when the door body is opened, and the external environment is great with the internal portion's of cabinet heat exchange volume this moment, leads to the internal temperature fluctuation of cabinet great and cold volume loss volume to increase. Particularly, in a refrigerator for storing a special product such as a medicine, it is important to maintain the stability of the temperature in the cabinet.
Disclosure of Invention
The invention provides a freezer air curtain control method aiming at the problem that the temperature fluctuation in a freezer body is large when a door body of an existing horizontal type air freezer is opened, and the freezer air curtain control method is used for improving the object taking experience of a user when the door body is opened, reducing the heat of the external environment entering the freezer body and improving the refrigeration effect of the freezer.
In order to realize the purpose of the invention, the invention is realized by adopting the following technical scheme:
the utility model provides a freezer air curtain control method, the freezer includes the cabinet body and the door body, its characterized in that, the first end of the cabinet body is close to cabinet mouthful department and is provided with first air supply arrangement, with the first end is relative the second end of the cabinet body is close to cabinet mouthful department and is provided with first air return device, freezer air curtain control method includes: s1: detecting whether the door body is opened or not; s2: when the door body is detected to be opened, closing the first air supply device and the first air return device; s3: detecting the actual temperature in the cabinet body in real time, and calculating the temperature difference between the actual temperature and the set temperature; and timing the door opening time; s4: when the temperature difference is greater than a preset temperature threshold value or the door opening time is greater than a first preset door opening time, controlling the evaporation fan and the compressor to run, and opening the first air supply device and the first air return device to enable the first air supply device and the first air return device to form an air curtain at the cabinet opening; s5: and if the door opening time is longer than the second preset door opening time, the evaporation fan and the compressor run according to the state when the door body is closed, wherein the second preset door opening time is longer than the first preset door opening time.
According to the refrigerator air curtain control method, the closing of the first air supply device and the first air return device specifically comprises the following steps: and the compressor and the evaporation fan stop running, so that the first air supply device does not supply air and the first air return device does not return air.
According to the refrigerator air curtain control method, a second air supply device is arranged on the first end part and below the first air supply device, and at least one second air return device is arranged on the second end part and below the first air return device; in S2, the first blowing device and the first air returning device are turned off, and the second blowing device and the at least one second air returning device are turned on, the compressor operates in a frequency-reducing mode, and the evaporation fan operates at a low duty ratio.
According to the refrigerator air curtain control method, a second air supply device is arranged on the first end part and below the first air supply device, and at least one second air return device is arranged on the second end part and below the first air return device; and when the door opening time is longer than the first preset door opening time in S4, controlling the compressor and the evaporation fan to operate and simultaneously controlling the second air supply device and the at least one second air return device to be opened.
The refrigerator air curtain control method further comprises the following steps: and a step of giving an alarm when the door opening time is greater than a first preset door opening time in S4.
According to the refrigerator air curtain control method, a second air supply device is arranged on the first end part and below the first air supply device, and at least one second air return device is arranged on the second end part and below the first air return device; when the door opening time is greater than a second preset door opening time in S5, judging the size of the temperature difference and a preset temperature threshold value in real time; when the temperature difference is smaller than or equal to the preset temperature threshold, keeping opening the first air supply device and the first air return device, and closing the second air supply device and the at least one second air return device; and when the temperature difference is greater than the preset temperature threshold value, the first air supply device, the first air return device, the second air supply device and at least one second air return device are turned on.
In the refrigerator air curtain control method, the side air supply devices are further arranged on the opposite sides of the first end part, and the side air supply devices are opened when the door body is detected to be opened in S2.
According to the freezer air curtain control method, the distance between the first air supply device and the freezer opening is not more than 100 mm.
According to the refrigerator air curtain control method, the number of the first air supply devices is two, and the first air supply devices are arranged at intervals in the same row.
The invention also relates to a refrigerator air curtain control method, wherein the refrigerator comprises a cabinet body and a door body, and the refrigerator air curtain control method is characterized in that a first air supply device and a second air supply device are arranged at the upper part and the lower part of a first end part of the cabinet body, and a first air return device and at least one second air return device are arranged at the upper part and the lower part of a second end part of the cabinet body opposite to the first end part, and comprises the following steps: s1: detecting whether the door body is opened or not; s2: when the door body is detected to be opened, closing the first air supply device and the first air return device; s3: detecting the actual temperature in the cabinet body in real time, and calculating the temperature difference between the actual temperature and the set temperature; and timing the door opening time; s4: when the temperature difference is greater than a preset temperature threshold value or the door opening time is greater than a first preset door opening time, controlling the evaporation fan and the compressor to run, and opening the first air supply device and the first air return device to enable the first air supply device and the first air return device to form an air curtain at the cabinet opening; s5: if the door opening time is greater than a second preset door opening time, judging the size of the temperature difference and a preset temperature threshold value in real time; when the temperature difference is smaller than or equal to the preset temperature threshold, keeping opening the first air supply device and the first air return device, closing the second air supply device and the at least one second air return device, and enabling the evaporation fan to operate and the compressor not to operate; when the temperature difference is larger than the preset temperature threshold value, the first air supply device, the first air return device, the second air supply device and the at least one second air return device are turned on, and the compressor and the evaporation fan run; the second preset door opening time is greater than the first preset door opening time.
Compared with the prior art, the invention has the advantages and positive effects that: when detecting the opening door body, close first air supply arrangement and first return air device, do not form the air curtain in cabinet mouth department, when making the user stretch into the cabinet internal object of getting, do not receive the thrill of air curtain, and when the time extension of opening the door or temperature difference are greater than the preset temperature threshold value, control evaporation fan and compressor operation, and open first air supply arrangement and second air supply arrangement, make first air supply arrangement and second air supply arrangement form the air conditioning air curtain in cabinet mouth department, this air conditioning air curtain prevents that heat gets into in the cabinet internally in the outside air, avoid cold volume to run off, guarantee freezer refrigerating capacity.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.
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 are briefly introduced below, and it is obvious that the drawings in the following description are 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 creative efforts.
Fig. 1 is a schematic structural view of a horizontal air-cooled refrigerator according to the present invention;
fig. 2 is a flowchart of a freezer air curtain control method according to a first embodiment of the present invention;
fig. 3 is a flowchart of a freezer air curtain control method according to a second embodiment of the present invention;
fig. 4 is a flowchart of a freezer air curtain control method according to a third embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples.
Fig. 1 shows a schematic structural diagram of a horizontal air-cooled refrigerator. Referring to fig. 1, the structure of the horizontal air-cooled refrigerator will be described first, the horizontal air-cooled refrigerator includes a cabinet 10 and a door 20, the door 20 is located at the top of the cabinet 10, the cabinet is used for opening and closing a cabinet opening (not shown) formed in the cabinet body 10, the cabinet body 10 is provided with an evaporation cavity 30, the evaporation cavity 30 is internally provided with an evaporation fan 31 and an evaporator 32, a first end portion (shown as a right end portion in fig. 1) of the cabinet body 10 is provided with an air outlet duct 40 and a first return air duct 50 which are arranged up and down, a second end portion (shown as a left end portion in fig. 1) and a bottom portion of the cabinet body 10 opposite to the first end portion are respectively provided with a second return air duct 60 and a third return air duct 70, the air outlet duct 40, the second return air duct 60, the third return air duct 70 and the first return air duct 50 form a circulating air duct, the air outlet duct 40 is communicated with an air outlet (not shown) of the evaporation cavity 30, and the first return air duct 50.
The first end part is provided with a first air supply device (not shown) close to the cabinet opening, and the second end part is provided with a first air return device close to the cabinet opening. The air supply device related to the embodiment can comprise a plurality of air supply outlets, and air supply air doors can be arranged on the air supply outlets and can open and close the air supply outlets. The return air device that this embodiment relates to can contain a plurality of return air inlets, can also be provided with the return air door on this return air inlet, and this return air door can open and close this return air inlet.
The first air supply device is an upper air supply outlet 41 formed at the top of the air outlet duct 40, and the first air return device is an upper air return inlet 61 formed at the top of the second air return duct 60.
The air outlet duct 40 arranged at the end part of the horizontal air-cooled refrigerator is matched with the second air return duct 60 and the third air return duct 70 arranged at the opposite end part and the bottom part, so that the sent cold air directly impacts the second air return duct 60 at the opposite end part, the cold air output from the air outlet duct 40 can cover the whole cross section in the cabinet body 10, the upper air supply opening 41 and the upper air return opening 61 can form a top air curtain to isolate the heat leaked from a door seal, and by utilizing the natural sinking principle of the cold air, part of the cold air output from the air outlet duct 40 sinks through heat exchange, and the other part of the cold air sinks through the second air return duct 60 through heat exchange and then returns back to the evaporation cavity 30 from the third air return duct 70 at the bottom part again, thereby realizing the cold circulation in the whole cabinet body 10 and ensuring that all areas in the cabinet body 10.
In order to avoid the wind sensation of the top air curtain to the hands of the user when the door body 20 is opened, reduce the user's article taking experience, and avoid that the temperature in the cabinet body 10 is affected by the heat in the external environment entering the cabinet body 10 during the opening of the door body 20, reduce the refrigeration effect and increase the energy consumption, the air curtain control method of the freezer shown in fig. 2 to 4 is used for solving the above problems, wherein the air curtain control method of the freezer shown in fig. 2 to 4 is realized based on the horizontal air-cooled freezer shown in fig. 1.
Example one
Fig. 2 shows a flow chart of a freezer air curtain control method. Specifically, the following description is made with reference to fig. 2.
S21: it is detected whether the door 20 is opened.
Firstly, the complete machine of the horizontal air-cooled refrigerator needs to be ensured to be powered on.
There are various existing ways to detect the opening of the door 20, for example, the push-pull door can be selectively opened or closed by using a magnetic-sensing switch or a gravity switch, etc., without limitation
The electronic detection device for detecting whether the door body 20 is opened is connected with the electronic temperature controller in the cabinet body 10.
When the door body 20 is detected to be closed, the whole refrigeration cycle operates according to a preset program when the door is closed, which is the same as the refrigeration cycle when the door of a conventional refrigerator is closed, and mainly is the start-stop control of the compressor M and the evaporation fan 31, and the refrigeration cycle when the door of the conventional refrigerator is closed can be referred to, for example, in the normal refrigeration process, the evaporation fan 31 stops after delaying the operation for a certain time after the compressor M stops, and the evaporation fan 31 operates in advance for a certain time before the compressor M starts to operate.
S22: when the door 20 is opened, the first air blowing device and the second air blowing device are closed.
In this step, after the door is opened, the user can take the article from the refrigerator, and the first air supply device and the second air supply device are closed to avoid forming a top air curtain between the upper air supply outlet 41 and the upper air return inlet 61, so that the user feels a wind sensation to the hand when taking the article.
The manner of turning off the first air blowing means and the second air blowing means may be realized by the following first manner.
In the first mode, no matter what state the compressor M and the evaporation fan 31 are in before the door body 20 is opened, when the door body 20 is detected to be opened, the compressor M and the evaporation fan 31 are controlled to stop running, at this moment, the first air supply device does not supply air, and the first air return device does not return air, so that the first air supply device and the first air return device do not form a top air curtain at the cabinet opening.
S23: detecting the actual temperature Ta in the cabinet body 10 in real time, calculating the temperature difference Delta T between the actual temperature Ta and the set temperature Ts, and timing the door opening time T.
In S23, the temperature sensor may be located on the inner container inside the cabinet 10, and the location of the temperature sensor is preferably located on the wind direction path of the circulating wind channel, so that the temperature inside the cabinet 10 can be more accurately reflected. The temperature sensor is connected with an electronic temperature controller in the refrigerator. Under normal work, namely when the refrigerator door body 20 is closed, the temperature sensor in the cabinet body 10 senses the temperature in the cabinet body 10; when the door 20 is opened, the external air enters the cabinet 10 to cause the temperature inside the cabinet 10 to change, and the temperature sensor senses the temperature change and sends the detected actual temperature Ta to the electronic temperature controller in real time.
Along with the increase of the time for opening the door body 20, the temperature and the cold energy in the cabinet body 10 gradually lose, so that the temperature in the cabinet body 10 can rise, and whether a cold air curtain needs to be formed at the cabinet opening or not is determined according to the change of the temperature difference delta T or the length of the door opening time T.
S24: and judging whether the door opening time t is greater than a first preset door opening time t 1.
In S24, the first preset door opening time t1 is set to 30 seconds, although this time may be set to other values, and 30 seconds is shown as an example.
If t >30S, proceed to S26, otherwise, proceed to S22, keep the current state and keep timing the door open time.
S25: and judging whether the temperature difference delta T is larger than a preset temperature threshold Tth or not.
In S25, the preset temperature threshold Tth is set to 3 ℃, although this temperature may be set to other values, and 3 ℃ is shown as an example.
If the delta T is larger than 3 ℃, the operation is carried out to S26, otherwise, the value is returned to S21, and whether the door body 21 is opened or not is detected.
S26: the operation of the evaporation fan 31 and the operation of the compressor M are controlled, and the first air supply device and the second air supply device are opened.
When delta T is greater than 3 ℃ or T is greater than 30s, the evaporation fan 31 and the compressor M are controlled to operate, an air curtain formed by cold air is formed between the upper air supply outlet 41 and the upper air return inlet 61 at the moment and used for preventing external hot air from entering the cabinet body 10, the refrigeration cycle is started, the cold air output by the air outlet duct 40 and hot air in the cabinet body 10 exchange and return to the evaporation cavity 30 through the first air return duct 50, the cold air output by the air outlet duct 40 returns to the evaporation cavity 30 through the second air return duct 60, and the temperature in the cabinet body 10 is uniformly reduced while the cold air curtain is formed.
S27: and detecting the door opening time t in real time, and judging whether the t is greater than a second preset door opening time t 2.
In S27, the second preset door opening time t2 is set to 7 minutes, although this time may be set to other values, and 7 minutes is shown as an example.
When t is greater than 7min, the whole refrigeration cycle operates according to a preset program when the door of the refrigerator is closed, the refrigeration cycle is not different from that of a conventional refrigerator when the door of the refrigerator is closed, and the start-stop control of the compressor M and the evaporation fan 31 is mainly realized, so that the refrigeration cycle of the conventional refrigerator when the door of the refrigerator is closed can be referred. And when t is less than or equal to 7min, continuously detecting whether the door body 20 is opened or not, and timing the door opening time when the door body is continuously opened.
When the door body 20 is opened, at first, the top air curtain is not formed at the cabinet opening, the blowing sense when the user gets the thing is avoided, the user is promoted to get the thing and experiences, and when the time of opening the door is greater than a first preset time or the temperature difference is greater than a certain value, it indicates that the user forgets to close the door or still opens the door body 20 for a long time and leads to the temperature rising in the cabinet body 10, form the air conditioning air curtain at the cabinet opening through refrigeration cycle's operation and first air supply arrangement and second air supply arrangement, the heat exchange between cold air and the external environment hot air in the isolated freezer, avoid the cold volume loss during opening the door, the power consumption is reduced, and guarantee the interior refrigeration effect of the cabinet body.
Example two
As shown in fig. 3, it shows a flowchart of a second embodiment of the air curtain control method of the refrigerator, which is also implemented based on the structure of the horizontal air-cooled refrigerator shown in fig. 1.
The implementation of the present embodiment differs from the implementation in the first embodiment in the following way.
As shown in fig. 3, the manner in which the first air blowing means and the second air blowing means are turned off may be implemented in the following second manner.
In the second mode, in order to keep the interior bottom of the cabinet 10 normally cool without forming a top air curtain at the cabinet opening during the opening of the door 20, in this second mode, a second air supply device is disposed on the first end portion below the first air supply device, and the second air supply device is at least one lower air supply opening (the lower air supply opening 42 is shown in fig. 1), and each air supply opening is provided with an air supply door for opening and closing each air supply opening, and the second end portion is provided with at least one second air return device below the first air return device, specifically in this embodiment, the at least one second air return device includes a second air return device a and a second air return device B disposed above and below the first air return device, and the second air return device a is at least one middle air return opening (the middle air return opening 62 is shown in fig. 1), the second air return device B is at least one lower air return opening (the lower air return opening 63 is shown in fig. 1), and each of the middle return air inlets and the lower return air inlets is provided with at least one middle return air door (not shown) and at least one lower return air door (not shown) for opening and closing the corresponding return air inlet. Each air door is equipped with an air port tripe and step motor, and step motor's drive shaft connection main connecting rod, and main connecting rod rotates through the one end of first bent axle with the air port tripe to be connected, and the other end of air port tripe rotates with the second bent axle that sets up on the air port and is connected, and the air port tripe is used for the water conservancy diversion air-out.
When the door body 20 is detected to be opened, the first air supply device and the first air return device are closed, the second air supply device and the second air return devices a and B are opened, the compressor M operates in a frequency-reducing mode, and the evaporation fan 31 operates at a low duty ratio, that is, when the door body 20 is opened, the upper air supply outlet 41 and the upper air return outlet 61 are closed, the lower air supply outlet 42, the middle air return outlet 62 and the lower air return outlet 63 are opened, and the compressor M operates in a frequency-reducing mode (for example, the frequency of the compressor M is reduced by 30%), the evaporation fan 31 operates at a low duty ratio (for example, the duty ratio of the evaporation fan is 50% of the duty ratio of the normal fan at the temperature), at the moment, the upper air supply outlet 41 and the upper air return outlet 61 are closed (even if the compressor M and the evaporation fan 31 both operate), an air curtain cannot be formed at the cabinet opening, and the middle air return outlet 62 and, for maintaining a refrigerated temperature within the cabinet 10.
As shown in fig. 3, the actual temperature Ta in the cabinet 10 is detected in real time, the temperature difference Δ T between the actual temperature Ta and the set temperature Ts is calculated, and the door opening time T is counted.
When t > t1 (for example, 30 seconds), it is considered that the user is hesitant to take the article or forget to close the door, and at this time, in order to avoid a large loss of the temperature in the cabinet 10, the compressor M and the evaporation fan 31 are operated simultaneously, and the upper air supply port 41, the upper air return port 61, the lower air supply port 42, the middle air return port 62 and the lower air return port 63 are all opened, so that the refrigeration cycle in the cabinet 10 is realized while the top air curtain is formed. In addition, in the process, an alarm prompt signal can be sent out in an audible and visual alarm mode and the like when the air curtain is formed, so that a user can be reminded to close the door. And when t is less than or equal to t1, continuously detecting whether the door body 20 is opened or not, and timing the door opening time when the door body is continuously opened.
When T > T2 (wherein T2> T1, for example, T2=7 min), it is determined that the user forgets to close the door or performs the exhibition mode, and the opening of each tuyere is determined according to the relationship between the temperature difference Δ T in the cabinet 10 and the preset temperature threshold Tth. And when t is less than or equal to t2, continuously detecting whether the door body 20 is opened or not, and timing the door opening time when the door body is continuously opened.
Specifically, when Δ T < = Tth (for example, 3 ℃), the upper air supply outlet 41 and the upper air return inlet 61 are kept open, and the lower air supply outlet 42, the middle air return inlet 62 and the lower air return inlet 63 are closed, so that most of the cold air output from the air outlet duct 40 returns from the upper air return inlet 61, the upper air supply outlet 41 and the upper air return inlet 61 form an air curtain with large air volume at the cabinet opening, and the external heat is prevented from entering the cabinet 10, and at this time, the operation states of the evaporation fan 31 and the compressor M are still according to the operation state when the door 20 is closed.
When the delta T is greater than Tth, the upper air supply outlet 41, the upper air return opening 61, the lower air supply outlet 42, the middle air return opening 62 and the lower air return opening 63 are kept open, the upper air supply outlet 41 and the upper air return opening 61 form an air curtain at the position of the cabinet opening, in addition, the middle air return opening 62 and the lower air return opening 63 return air due to the air supply of the lower air supply opening 42, so that the bottom of the cabinet body 10 can still be refrigerated for realizing the refrigeration in the cabinet body 10, and at the moment, the running states of the evaporation fan 31 and the compressor M still follow the running state when the door body 20 is closed.
In addition, eight air outlets are provided on the air outlet duct 40, wherein four upper air outlets 41 are arranged at intervals in the same row on the top, two lower air outlets 42 are arranged at intervals in the same row on the lower side, and a left air supply device and a right air supply device are formed on the opposite left and right sides of the air outlet duct 40, the left air supply device in this embodiment is a left air outlet (not shown), the right air supply device in this embodiment is a right air outlet (not shown), and the purpose of the side air outlets is to provide cooling capacity to the inside of the cabinet 10 while forming an air curtain. The upper air supply outlet 41 in this embodiment is more concentrated in the distribution above the air outlet duct 40, and the distance from the cabinet opening is not more than 100mm, so as to ensure that a stronger and more smooth air curtain is formed at the cabinet opening, better isolate the outside air to enter the cabinet 10, and ensure the temperature in the cabinet 10.
EXAMPLE III
The invention further relates to a refrigerator air curtain control method, as shown in fig. 4, which shows a flowchart of an embodiment of the refrigerator air curtain control method, and is similar to the refrigerator air curtain control method shown in fig. 3 in the second embodiment, except that when T > T2, the opening of each air opening and the start-stop operation of the evaporation fan 31 and the compressor M are determined according to the relationship between the temperature difference Δ T in the cabinet 10 and the preset temperature threshold Tth. Of course, in the present embodiment, the condition for triggering the formation of the air curtain may be that the formation of the air curtain is triggered by the temperature difference Δ T > Tth, in addition to T > T1 shown in fig. 4, and the air curtain is formed as cold air.
Specifically, as shown in fig. 4, when T > T2 and Δ T < = Tth, the evaporation fan 31 is kept operating and the upper blowing port 41 and the upper air return opening 61 are kept open, the temperature inside the cabinet 10 is protected by the air curtain, and the lower blowing port 42, the middle air return opening 62 and the lower air return opening 63 are closed, so that the air volume is basically blown out from the upper blowing port 41 and sent into the upper air return opening 61, the air curtain effect is better, and the compressor M is not operated at this time for the purpose of energy saving. When T is greater than T2 and Δ T is greater than Tth, the operation of the evaporation fan 31 and the operation of the compressor M are maintained, and the upper air supply outlet 41, the upper air return outlet 61, the lower air supply outlet 42, the middle air return outlet 62 and the lower air return outlet 63 are kept open, so that the articles in the cabinet body 1 can be refrigerated when the temperature in the air curtain protection cabinet body 10 is formed, and better refrigeration effect is realized while external heat and cold air heat exchange in the cabinet body 10 are prevented.
In addition, the display mode may be automatically set when the door opening time T > T2, the evaporation fan 31 is controlled to continuously operate, the upper air supply door and the lower air supply door are opened to form the air curtain to protect the temperature in the cabinet 10, and the other air doors (the lower air supply door, the middle air return door and the lower air return door) and the compressor M may be controlled according to the temperature difference Δ T in the cabinet 10 as described above. Alternatively, a button control for opening the display mode may be designed on the control panel, after the display mode is determined, the door 20 is opened, the evaporation fan 31 is controlled to operate continuously, the upper air supply door and the lower air supply door are opened, the temperature inside the cabinet 10 is protected by the air curtain, and the other air doors (the lower air supply door, the middle air return door and the lower air return door) and the compressor M are controlled according to the temperature difference Δ T inside the cabinet 10 as described above.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. The utility model provides a freezer air curtain control method, the freezer includes the cabinet body and the door body, its characterized in that, the first end of the cabinet body is close to cabinet mouthful department and is provided with first air supply arrangement, with the first end is relative the second end of the cabinet body is close to cabinet mouthful department and is provided with first air return device, freezer air curtain control method includes:
s1: detecting whether the door body is opened or not;
s2: when the door body is detected to be opened, closing the first air supply device and the first air return device;
s3: detecting the actual temperature in the cabinet body in real time, calculating the temperature difference between the actual temperature and the set temperature, and timing the door opening time;
s4: when the temperature difference is greater than a preset temperature threshold value or the door opening time is greater than a first preset door opening time, controlling the evaporation fan and the compressor to run, and opening the first air supply device and the first air return device to enable the first air supply device and the first air return device to form an air curtain at the cabinet opening;
s5: and if the door opening time is longer than the second preset door opening time, the evaporation fan and the compressor run according to the state when the door body is closed, wherein the second preset door opening time is longer than the first preset door opening time.
2. The refrigerator air curtain control method of claim 1, wherein the closing of the first air supply device and the first air return device is specifically:
and the compressor and the evaporation fan stop running, so that the first air supply device does not supply air and the first air return device does not return air.
3. The freezer air curtain control method of claim 1, wherein a second air supply device is arranged on the first end portion and below the first air supply device, and at least one second air return device is arranged on the second end portion and below the first air return device;
in S2, the first blowing device and the first air returning device are turned off, and the second blowing device and the at least one second air returning device are turned on, the compressor operates in a frequency-reducing mode, and the evaporation fan operates at a low duty ratio.
4. The freezer air curtain control method of claim 1, wherein a second air supply device is arranged on the first end portion and below the first air supply device, and at least one second air return device is arranged on the second end portion and below the first air return device;
and when the door opening time is longer than the first preset door opening time in S4, controlling the compressor and the evaporation fan to operate and simultaneously controlling the second air supply device and the at least one second air return device to be opened.
5. The freezer air curtain control method of claim 4, further comprising: and a step of giving an alarm when the door opening time is greater than a first preset door opening time in S4.
6. The freezer air curtain control method of claim 1, wherein a second air supply device is arranged on the first end portion and below the first air supply device, and at least one second air return device is arranged on the second end portion and below the first air return device;
when the door opening time is greater than a second preset door opening time in S5, judging the size of the temperature difference and a preset temperature threshold value in real time;
when the temperature difference is smaller than or equal to the preset temperature threshold, keeping opening the first air supply device and the first air return device, and closing the second air supply device and the at least one second air return device;
and when the temperature difference is greater than the preset temperature threshold value, the first air supply device, the first air return device, the second air supply device and at least one second air return device are turned on.
7. The refrigerator air curtain control method of any one of claims 1 to 6, wherein side air blowing devices are further provided on opposite sides of the first end portion, and the side air blowing devices are opened when the door body is detected to be opened in S2.
8. A refrigerator air curtain control method as claimed in any one of claims 1 to 6, wherein the first air supply device is no more than 100mm from the cabinet opening.
9. The refrigerator air curtain control method of any one of claims 1 to 6, wherein the number of the first air supply devices is two and the first air supply devices are arranged at intervals in the same row.
10. The refrigerator air curtain control method is characterized in that a first air supply device and a second air supply device are arranged at the upper portion and the lower portion of a first end portion of a cabinet body, a first air return device and at least one second air return device are arranged at the upper portion and the lower portion of a second end portion of the cabinet body, opposite to the first end portion, and the refrigerator air curtain control method comprises the following steps:
s1: detecting whether the door body is opened or not;
s2: when the door body is detected to be opened, closing the first air supply device and the first air return device;
s3: detecting the actual temperature in the cabinet body in real time, calculating the temperature difference between the actual temperature and the set temperature, and timing the door opening time;
s4: when the temperature difference is greater than a preset temperature threshold value or the door opening time is greater than a first preset door opening time, controlling the evaporation fan and the compressor to run, and opening the first air supply device and the first air return device to enable the first air supply device and the first air return device to form an air curtain at the cabinet opening;
s5: if the door opening time is greater than a second preset door opening time, judging the size of the temperature difference and a preset temperature threshold value in real time;
when the temperature difference is smaller than or equal to the preset temperature threshold, keeping opening the first air supply device and the first air return device, closing the second air supply device and the at least one second air return device, and enabling the evaporation fan to operate and the compressor not to operate;
when the temperature difference is larger than the preset temperature threshold value, the first air supply device, the first air return device, the second air supply device and the at least one second air return device are turned on, and the compressor and the evaporation fan run;
the second preset door opening time is greater than the first preset door opening time.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114877585A (en) * | 2022-05-06 | 2022-08-09 | 海信（山东）冰箱有限公司 | Refrigerator and air curtain fan control method of refrigerator |
| CN115127295A (en) * | 2022-07-05 | 2022-09-30 | 珠海格力电器股份有限公司 | Refrigerator control method, refrigerator and computer readable storage medium |
| CN115773628A (en) * | 2022-12-08 | 2023-03-10 | 珠海格力电器股份有限公司 | Rotating speed control method and refrigeration equipment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1114224A (en) * | 1997-06-17 | 1999-01-22 | Daewoo Electron Co Ltd | Refrigerator having air curtain-forming apparatus and method for controlling air curtain-forming operation |
| US20020066282A1 (en) * | 2000-12-04 | 2002-06-06 | True Manufactruing Co., Inc. | Air curtain horizontal merchandiser |
| JP2008151451A (en) * | 2006-12-19 | 2008-07-03 | Gac Corp | Storage device and its temperature control method |
| JP2014081128A (en) * | 2012-10-16 | 2014-05-08 | Fuji Electric Co Ltd | Freezing car |
| CN104344629A (en) * | 2014-01-13 | 2015-02-11 | 海尔集团公司 | Refrigerator and control method for air curtain generation devices in refrigerator |
| KR20160020980A (en) * | 2014-08-16 | 2016-02-24 | 이정용 | A Refrigerator with Air Curtain |
| CN107314597A (en) * | 2017-06-01 | 2017-11-03 | 青岛海尔特种电冰柜有限公司 | Horizontal type wind-cooling refrigerator with keepalive feature |
| CN207247666U (en) * | 2017-03-20 | 2018-04-17 | 青岛海尔电冰箱有限公司 | A kind of energy-saving refrigerator |
-
2019
- 2019-12-31 CN CN201911420026.0A patent/CN113124603B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1114224A (en) * | 1997-06-17 | 1999-01-22 | Daewoo Electron Co Ltd | Refrigerator having air curtain-forming apparatus and method for controlling air curtain-forming operation |
| US20020066282A1 (en) * | 2000-12-04 | 2002-06-06 | True Manufactruing Co., Inc. | Air curtain horizontal merchandiser |
| JP2008151451A (en) * | 2006-12-19 | 2008-07-03 | Gac Corp | Storage device and its temperature control method |
| JP2014081128A (en) * | 2012-10-16 | 2014-05-08 | Fuji Electric Co Ltd | Freezing car |
| CN104344629A (en) * | 2014-01-13 | 2015-02-11 | 海尔集团公司 | Refrigerator and control method for air curtain generation devices in refrigerator |
| KR20160020980A (en) * | 2014-08-16 | 2016-02-24 | 이정용 | A Refrigerator with Air Curtain |
| CN207247666U (en) * | 2017-03-20 | 2018-04-17 | 青岛海尔电冰箱有限公司 | A kind of energy-saving refrigerator |
| CN107314597A (en) * | 2017-06-01 | 2017-11-03 | 青岛海尔特种电冰柜有限公司 | Horizontal type wind-cooling refrigerator with keepalive feature |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114877585A (en) * | 2022-05-06 | 2022-08-09 | 海信（山东）冰箱有限公司 | Refrigerator and air curtain fan control method of refrigerator |
| CN115127295A (en) * | 2022-07-05 | 2022-09-30 | 珠海格力电器股份有限公司 | Refrigerator control method, refrigerator and computer readable storage medium |
| CN115127295B (en) * | 2022-07-05 | 2023-07-18 | 珠海格力电器股份有限公司 | Control method of refrigerator, refrigerator and computer readable storage medium |
| CN115773628A (en) * | 2022-12-08 | 2023-03-10 | 珠海格力电器股份有限公司 | Rotating speed control method and refrigeration equipment |
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|---|---|
| CN113124603B (en) | 2023-11-14 |
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