CN115371323A - Refrigeration plant and air duct assembly thereof - Google Patents
Refrigeration plant and air duct assembly thereof Download PDFInfo
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- CN115371323A CN115371323A CN202111182980.8A CN202111182980A CN115371323A CN 115371323 A CN115371323 A CN 115371323A CN 202111182980 A CN202111182980 A CN 202111182980A CN 115371323 A CN115371323 A CN 115371323A
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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
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
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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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/04—Preventing the formation of frost or condensate
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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
- F25D23/00—General constructional features
- F25D23/006—General constructional features for mounting refrigerating machinery components
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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
- F25D23/00—General constructional features
- F25D23/06—Walls
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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
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
The invention provides a refrigeration device and an air duct assembly thereof, wherein the air duct assembly comprises an air duct plate, an air outlet, an air return inlet, an intermediate air duct plate, an air door, a fan and an evaporator, and the air duct plate is enclosed to form an air duct; the middle air duct plate is used for dividing the air duct into a first air duct and a second air duct, the air outlet is positioned on the air duct plate corresponding to the first air duct, the air return inlet is positioned on the air duct plate corresponding to the second air duct, and the middle air duct plate is provided with an airflow channel; the air door is positioned in the second air duct, and when the air door is closed, the second air duct is divided into a third air duct and a fourth air duct; the fan is positioned in the third air duct; the evaporator is positioned in the fourth air duct. The air outlet of the air outlet can be controlled to be refrigerating air or mixed air through the air door, the air can be quickly refrigerated during the refrigerating air, the temperature of air flowing out of the air outlet can be increased during the mixed air, the storage of articles at the air outlet is facilitated, the temperature difference of air in the box is weakened, the temperature uniformity in the box is improved, and the condensation of an air duct plate is avoided.
Description
Technical Field
The invention belongs to the technical field of refrigeration equipment, and particularly relates to refrigeration equipment and an air duct assembly thereof.
Background
Air-cooled refrigeration equipment generally adopts a fin evaporator arranged in a box body to refrigerate, and the evaporator is provided with a fan. Specifically, be provided with the wind channel in the refrigeration plant, evaporimeter and fan are located the wind channel, and under the effect of fan, the gaseous circulation of incasement flows through the evaporimeter, refrigerates the gas that flows through the evaporimeter, and the gas that the back temperature reduced after the refrigeration flows out from the air outlet again, then flows to each corner of box, and then realizes the cooling to the whole incasement space of refrigeration plant.
The refrigeration equipment is generally controlled by detecting the temperature in the box through a temperature sensor in the box, the temperature sensor in the box is generally away from the air outlet by a certain distance, so that the detected temperature is higher than the temperature of the air outlet, and when the temperature in the box meets the requirement, the temperature of the air outlet is possibly lower than the required temperature.
Because the evaporator surface temperature is very low, so, the temperature of the gaseous temperature that flows through the evaporimeter will be very low by the decline, when microthermal cold gas flowed out from the air outlet, lead to the temperature of air outlet very low, consequently, lead to air outlet department to be unfavorable for article storage. In particular, medical refrigeration equipment, including refrigeration equipment for storing biological samples, medicines, vaccines and the like, has strict requirements on temperature ranges, and if the temperature of an air outlet is very low, stored articles at the position are easy to deteriorate or lose efficacy due to exceeding the required temperature.
In addition, the air temperature of the air outlet is low, and the air duct surface is easy to be condensed.
In order to solve the problem of low temperature at the air outlet, the prior art mainly adopts a method of adding a heating wire at the air outlet so as to improve the temperature of low-temperature cold gas flowing out of the vertical plate of the air duct. However, the adoption of the heating wire can increase the energy consumption of the product on one hand and also has certain potential safety hazard on the other hand.
The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.
Disclosure of Invention
The invention provides a refrigerating device and an air duct assembly thereof, aiming at solving the technical problems that the storage of articles close to an air outlet does not meet the temperature requirement and is deteriorated or invalid due to proper indoor temperature and low air outlet temperature of the existing refrigerating device.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
an air duct assembly for a refrigeration appliance, the air duct assembly comprising:
the air duct plate encloses to form an air duct;
the air outlet is positioned on the air duct plate;
the air return opening is positioned on the air duct plate and comprises a first air return opening and a second air return opening;
the air duct assembly further includes:
the air outlet is positioned on the air duct plate corresponding to the first air duct, the air return inlet is positioned on the air duct plate corresponding to the second air duct, and the middle air duct plate is provided with an air flow channel communicated with the first air duct and the second air duct;
the air door is positioned in the second air channel, when the air door is closed, the second air channel is divided into a third air channel and a fourth air channel, the first air return opening is positioned on an air channel plate corresponding to the third air channel, and the second air return opening is positioned on an air channel plate corresponding to the fourth air channel;
the fan is positioned in the fourth air channel and used for sending the air in the second air channel into the first air channel through the air flow channel;
the evaporator is positioned in the fourth air duct;
when the air door is controlled to be opened and the fan runs, gas enters the fourth air channel from the second air return opening, passes through the evaporator, then enters the first air channel, enters the third air channel from the first air return opening, passes through the air door, then enters the first air channel, and is discharged from the air outlet; when the air door is controlled to be closed and the fan runs, air enters the fourth air channel from the second air return opening, passes through the evaporator, enters the first air channel and is discharged from the air outlet.
The air duct assembly of the refrigeration equipment is characterized in that the fan is positioned in the air flow channel.
In the air duct assembly of the refrigeration device, the air flow channel is opposite to the part of the air duct plate without the air outlet.
The air duct assembly of the refrigeration equipment comprises a front air duct plate and a rear air duct plate, and the air outlet and the air return inlet are both positioned on the front air duct plate.
The air duct assembly of the refrigeration equipment comprises a front air duct plate and a rear air duct plate, wherein the front air duct plate comprises a first end and a second end which are opposite to each other, the first air return opening is located at the first end, and the second air return opening is located at the second end.
According to the air duct assembly of the refrigeration equipment, the front air duct plate comprises a third end portion and a fourth end portion which are opposite to each other, the air outlets comprise a plurality of first air outlets and a plurality of second air outlets, the first air outlets are located at the third end portion, and the second air outlets are located at the fourth end portion.
The refrigerating equipment comprises the air duct assembly, and an air outlet and an air return inlet of the air duct assembly are communicated with the refrigerating chamber; the refrigeration apparatus further includes:
the temperature detection module is used for detecting the temperature of the refrigerating chamber;
the control module is used for controlling the compressor and the fan to start and controlling the air door to close when the temperature detected by the temperature detection module exceeds a first set threshold value; and the air door is used for controlling the compressor and the fan to start and controlling the air door to open when the temperature detected by the temperature detection module does not exceed a first set threshold value.
In the refrigeration equipment, the control module is used for controlling the opening degree of the damper according to the relation between the temperature of the refrigeration compartment and a first set threshold value.
The control module is configured to control the compressor to stop, the fan to start, and the damper to close when the temperature detected by the temperature detection module is less than a second set threshold, where the second set threshold is less than the first set threshold.
The refrigeration equipment comprises a temperature detection module, a control module and a control module, wherein the temperature detection module comprises a first temperature sensor positioned in a refrigeration chamber and a second temperature sensor positioned at an air outlet, and the control module is used for controlling the on-off state of the air door according to the temperature detected by the second temperature sensor when the temperature detected by the first temperature sensor exceeds a first set threshold value.
Compared with the prior art, the invention has the advantages and positive effects that: the air duct component of the refrigeration equipment comprises an air duct plate, an air outlet, an air return inlet, an intermediate air duct plate, an air door, a fan and an evaporator, wherein the air duct plate is enclosed to form an air duct; the air outlet is positioned on the air duct plate; the air return port is positioned on the air duct plate and comprises a first air return port and a second air return port; the air outlet is positioned on the air duct plate corresponding to the first air duct, the air return inlet is positioned on the air duct plate corresponding to the second air duct, and the middle air duct plate is provided with an air flow channel communicated with the first air duct and the second air duct; the air door is positioned in the second air duct, when the air door is closed, the second air duct is divided into a third air duct and a fourth air duct, the first air return opening is positioned on an air duct plate corresponding to the third air duct, and the second air return opening is positioned on an air duct plate corresponding to the fourth air duct; the fan is positioned in the fourth air channel and used for sending the air in the second air channel into the first air channel through the air flow channel; the evaporator is positioned in the fourth air duct; when the air door is controlled to be opened and the fan runs, air enters the fourth air channel from the second air return opening, passes through the evaporator, enters the first air channel and is discharged from the air outlet, and air enters the third air channel from the first air return opening, enters the first air channel and is discharged from the air outlet; when the air door is controlled to be closed and the fan runs, the air enters the fourth air channel from the second air return inlet, passes through the evaporator, enters the first air channel and is discharged from the air outlet. According to the refrigerator, the middle air channel plate and the air door are additionally arranged, when the air door is opened, the circulating gas in the box body can partially pass through the evaporator and partially does not pass through the evaporator, so that the gas in the refrigerating chamber partially flows through the evaporator and partially does not flow through the evaporator, and the gas flowing through the evaporator and not flowing through the evaporator is mixed and then flows out of the air channel, so that the temperature of the gas flowing out of the air outlet can be increased, the storage of articles at the air outlet is facilitated, the temperature difference of the gas in the box is weakened, the temperature uniformity in the box is improved, and the temperature fluctuation in the box is reduced; when the air door is closed, the circulating gas in the box body can completely pass through the evaporator, so that quick refrigeration is realized. When the air door is opened, mixed air after mixing flows through the surface of the whole air duct, the temperature of the surface of the air duct plate can be increased, and condensation of the air duct plate is avoided.
The refrigerating equipment comprises a refrigerating chamber, a temperature detection module and a control module, wherein the control module controls an air door to be opened or closed according to the temperature detected by the temperature detection module, when the refrigerating chamber needs to be rapidly cooled, the air door is closed, circulating gas in a box body can completely pass through an evaporator to realize rapid refrigeration, when the refrigerating chamber does not need to be rapidly cooled, the air door is opened, the circulating gas in the box body can partially flow through the evaporator and partially does not flow through the evaporator, the gas flowing through the evaporator and the gas not flowing through the evaporator are mixed and then flow out of an air channel, so that hot gas in the refrigerating chamber and cold gas flowing through the evaporator are mixed and then flow out of the air channel, the temperature of the gas flowing out of an air outlet can be increased, the storage of articles at the air outlet is facilitated, the temperature difference of the gas in the box is weakened, the temperature uniformity in the box is improved, and the temperature fluctuation in the box is reduced.
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 required to be used in the embodiments are briefly described 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 the drawings without creative efforts.
FIG. 1 is a schematic view of an air duct assembly according to an embodiment of the present invention.
Fig. 2 is a side view of fig. 1.
FIG. 3 is a gas flow diagram with the damper closed.
Fig. 4 is a gas flow diagram with the damper open.
Fig. 5 is a schematic block diagram of the refrigeration unit of the present invention.
Fig. 6 is a control flow chart of an embodiment of the refrigeration appliance of the present invention.
Fig. 7 is a control flow chart of another embodiment of the refrigeration appliance of the present invention.
In the figure:
1. a front air duct plate;
11. a first end portion;
12. a second end portion;
13. a third end portion;
14. a fourth end portion;
2. a rear air duct plate;
3. a fan;
4. an evaporator;
51. a first air outlet;
52. a second air outlet;
61. a first air return opening;
62. a second air return inlet;
7. a medium airway plate;
81. a first air duct;
82. a second air duct;
823. a third air duct;
824. a fourth air duct;
9. an air flow channel;
10. a damper.
Detailed Description
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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.
An air duct assembly of refrigeration equipment comprises an air duct plate, an intermediate air duct plate, an air door, a fan and an evaporator, wherein the air duct plate is enclosed to form an air duct. The air door divides the second air channel into a third air channel and a fourth air channel, the evaporator is positioned in the fourth air channel, and when the air door is closed, gas passes through the fourth air channel (refrigeration) and the first air channel, so that rapid refrigeration can be realized; when the air door is opened, the air is mixed after passing through the third air channel (uncooled) and the fourth air channel (refrigerated) respectively to form mixed air with proper temperature to enter the first air channel, and the mixed air is discharged from the air outlet after being further mixed in the first air channel, so that the temperature of the air outlet cannot be too low, the object storage environment of the air outlet is ensured to meet the requirement, and the condensation of an air channel plate can be avoided.
The various components of the duct assembly are described in detail below with reference to figures 1-4 of the drawings:
the air duct plate is enclosed to form an air duct.
The air duct plate comprises a front air duct plate 1 and a rear air duct plate 2.
The front air duct plate 1 is a flat plate and is close to a refrigerating chamber of the refrigerating equipment.
The rear air duct plate 2 is positioned between the front air duct plate 1 and the shell of the refrigeration equipment. The section of the rear air duct plate 2 is U-shaped and comprises a flat plate and four side plates.
The front air duct plate 1 and the rear air duct plate 2 are connected and fixed, and a space enclosed by the front air duct plate and the rear air duct plate forms an air duct. The front air duct plate 1 is generally rectangular, the flat plate of the rear air duct plate 2 is rectangular, the size of the flat plate is matched with that of the front air duct plate 1, and four side plates are rectangular. The front air duct plate 1 and the rear air duct plate 2 form a cuboid structure, and the air duct is cuboid.
A fan 3 and an evaporator 4 are arranged in the air duct.
The fan 3 is used for generating power for circulating gas in the refrigerating chamber and the air duct.
The evaporator 4 is used for generating cold energy, and the gas exchanges heat with the evaporator 4 when passing through the evaporator 4, so that the refrigeration of the gas is realized.
The air outlet is positioned on the air duct plate.
Specifically, the air outlet is located on the front air duct plate 1.
Further, the air outlets include a plurality of first air outlets 51 and a plurality of second air outlets 52, the front air duct plate 1 includes a third end portion 13 and a fourth end portion 14, and the first air outlets 51 are located at the third end portion 13, and the second air outlets 52 are located at the fourth end portion 14.
Preferably, the third end 13 is a left end, the fourth end 14 is a right end, the plurality of first outlets 51 are distributed in the vertical direction of the third end 13, and the plurality of second outlets 52 are distributed in the vertical direction of the fourth end 14. The setting mode of the air outlet of the embodiment can ensure the uniformity of temperature distribution in the up-down direction in the refrigeration chamber.
The air return inlet is positioned on the air duct plate.
Specifically, the return air inlet is positioned on the front air duct plate 1.
Further, the air return openings include a plurality of first air return openings 61 and a plurality of second air return openings 62, the front duct plate 1 includes a first end portion 11 and a second end portion 12 opposite to each other, the first air return openings 61 are located at the first end portion 11, and the second air return openings 62 are located at the second end portion 12.
Preferably, the first end portion 11 is an upper end portion, the second end portion 12 is a lower end portion, the plurality of first air return openings 61 are distributed in a left-right direction of the first end portion 11, and the plurality of second air return openings 62 are distributed in a left-right direction of the second end portion 12. The setting mode of this embodiment return air inlet can realize the indoor homogeneity of returning air of refrigeration room, avoids the unable return air of some positions or the return air is uneven.
The air return opening and the air outlet can increase the flow of air in the refrigerating chamber, and the uniform temperature distribution in the refrigerating chamber is ensured.
The middle air duct plate 7 is located in the air duct for dividing the air duct into a first air duct 81 and a second air duct 82.
In this embodiment, the cross section of the middle air duct plate 7 is U-shaped, and includes a flat plate and upper and lower side plates. The flat plate of the middle air duct plate 7 is connected with the left and right side plates of the rear air duct plate 2, and the shape of the middle air duct plate 7 is matched with the shape of the flat plate of the rear air duct plate 2 plus the upper and lower side plates.
The first air duct 81 is a space formed between the middle air duct plate 7 and the front air duct plate 1, and is a rectangular parallelepiped.
The second air duct 82 is a space formed between the middle air duct plate 7 and the rear air duct plate 2, and has a U-shaped cross section.
The air outlet is located on the air duct plate corresponding to the first air duct 81.
Specifically, the air outlet is located on the front air duct plate 1 corresponding to the first air duct 81, that is, located in an area between the upper and lower side plates of the air duct plate 7 on the front air duct plate 1.
The air return opening is located on the air duct plate corresponding to the second air duct 82.
Specifically, the air return opening is located on the front air duct plate 1 corresponding to the second air duct 82, that is, located in a region between an upper side plate of the middle air duct plate 7 and an upper side plate of the rear air duct plate 2 on the front air duct plate 1, and located in a region between a lower side plate of the middle air duct plate 7 and a lower side plate of the rear air duct plate 2.
The middle duct plate 7 has an air flow passage for communicating the first air duct 81 and the second air duct 82.
The air flow channel 9 is a through hole on the middle air duct plate 7.
Preferably, the airflow channel 9 is opposite to the part of the front air duct plate 1 where the air outlet is not provided, so that the air passing through the airflow channel 9 flows in the first air duct 81 for a period of time and then flows out of the air outlet, on one hand, the temperature of the air outlet can be reduced, and on the other hand, the air flowing through the evaporator 4 and the air not flowing through the evaporator 4 can be fully mixed in the first air duct 81, and the purpose of uniform air outlet temperature is achieved.
Further, the air flow channel 9 is located in the middle of the middle air duct plate 7.
The damper 10 is located in the second air duct 82, and when the damper 10 is closed, the second air duct 82 is divided into a third air duct 823 and a fourth air duct 824.
The third air duct 823 and the fourth air duct 824 are both L-shaped in cross section.
The first air return opening 61 is located on the front air duct plate 1 corresponding to the third air duct 823, and the second air return opening 62 is located on the front air duct plate 1 corresponding to the fourth air duct 824.
The fan 3 is disposed in the fourth air duct 824 and is configured to send the air in the second air duct 82 to the first air duct 81 through the air flow passage 9.
In order to save space in the air duct, the fan 3 is located in the air flow passage 9.
The evaporator 4 is located in the fourth air duct 824, so that the air passing through the fourth air duct 824 passes through the evaporator 4 to be cooled by the evaporator 4, and the air passing through the third air duct 823 does not pass through the evaporator 4 to be cooled by the evaporator 4, and the temperature of the air in the cooling compartment is still maintained.
As shown in fig. 3, when the damper 10 is controlled to be closed and the fan 3 is operated, the air enters the fourth air duct 824 from the second air return opening 52, exchanges heat with the evaporator 4, enters the first air duct 81, and is discharged from the air outlet, so as to realize rapid cooling of the cooling compartment.
As shown in fig. 4, when the air door 10 is controlled to open and the fan 3 operates, on one hand, the air in the refrigerating chamber enters the fourth air duct 824 from the second air return port 62, enters the first air duct 81 after heat exchange by the evaporator 4, on the other hand, the air enters the third air duct 823 from the first air return port 61, enters the first air duct 81 after passing through the air door 10, the air flowing through the evaporator 4 and the air not flowing through the evaporator 4 are fully mixed in the first air duct and then are discharged from the air outlet, so that the hot air in the refrigerating chamber and the cold air flowing through the evaporator are mixed and then flow out of the air duct, the temperature of the air flowing out of the air outlet can be increased, storage of articles at the air outlet is facilitated, temperature difference of the air in the box is reduced, temperature uniformity in the box is increased, temperature fluctuation in the box is reduced, meanwhile, the temperature of the surface of the front air duct plate 1 can be increased, and condensation of the air duct plate is avoided.
The embodiment also provides a refrigeration device, which comprises a refrigeration chamber and the air duct assembly, wherein the air outlet and the air return inlet of the air duct assembly are communicated with the refrigeration chamber and used for refrigerating the refrigeration chamber and ensuring the refrigeration effect of the refrigeration chamber.
The refrigerating equipment comprises an inner shell, an outer shell and a foaming layer positioned between the inner shell and the outer shell. The refrigeration compartment is generally surrounded by an inner shell, and the air duct assembly is located in the foaming layer.
The air duct assembly is specifically described above, and is not described herein again.
Wherein the front air duct panel 1 is typically spliced to the inner shell to form a part of the inner shell.
The refrigeration equipment also comprises a temperature detection module and a control module.
As shown in fig. 5, the components of the refrigeration apparatus will be specifically described.
And the temperature detection module is used for detecting the temperature of the refrigerating chamber.
The temperature detection module includes at least one temperature sensor located within the refrigerated compartment.
The control module is used for controlling the compressor and the fan to start and controlling the air door to close when the temperature detected by the temperature detection module (the temperature sensor positioned in the refrigerating chamber) exceeds a first set threshold value, so that the gas in the refrigerating chamber enters the first air channel after being subjected to heat exchange with the evaporator through the fourth air channel and is discharged to the refrigerating chamber through the air outlet, and the temperature of the refrigerating chamber is rapidly reduced.
The control module is also used for controlling the compressor and the fan to be started and controlling the air door to be opened when the temperature detected by the temperature detection module (the temperature sensor positioned in the refrigerating chamber) does not exceed a first set threshold (set temperature Ts +. DELTA.T), so as to realize mixed air supply.
Preferably, the control module is used for controlling the opening of the air door according to the relation between the temperature of the refrigerating compartment and the first set threshold value so as to more accurately adjust the air mixing amount.
The damper opening is typically inversely related to the first set threshold and the temperature difference of the refrigeration compartment.
Preferably, the temperature detection module includes a first temperature sensor located in the refrigerating compartment and a second temperature sensor located at the air outlet.
The first temperature sensor positioned in the refrigerating chamber is used for detecting the temperature in the refrigerating chamber so as to ensure that the temperature in the refrigerating chamber is within a set range.
The second temperature sensor located at the air outlet is used for detecting the temperature at the air outlet so as to ensure that the temperature at the air outlet is higher than the minimum value of the temperature requirement range.
Further, when the temperature detected by the temperature detection module (the first temperature sensor located in the refrigerating compartment) exceeds a first set threshold (set temperature Ts +. DELTA.T), the control module further controls the opening and closing state of the air door according to the temperature detected by the second temperature sensor at the air outlet.
Specifically, when the temperature detected by the second temperature sensor at the air outlet is higher than the minimum value of the temperature required range, the air door is controlled to be closed; when the temperature detected by the second temperature sensor at the air outlet is lower than the minimum value of the temperature requirement range, the air door is controlled to be opened, and mixed air supply is realized.
The control module is used for controlling the compressor to stop, the fan to start and the air door to close when the temperature detected by the temperature detection module is less than a second set threshold (set temperature Ts-delta T), wherein the second set threshold is less than the first set threshold.
As shown in fig. 6, the control process of the refrigeration equipment of the present invention is as follows:
and S1, starting.
S2, detecting the temperature Tin in the box by using a temperature sensor.
S3, judging that Tin is larger than the set temperature Ts +. DELTA.T, if so, entering a step S4, otherwise, entering a step S5.
And S4, closing the air door, and opening the compressor and the fan. At the moment, all return air passes through the evaporator, the temperature of all return air is reduced, and then the low-temperature return air rapidly flows to the refrigerating chamber, so that the rapid reduction of the temperature in the refrigerator is realized. At this time, because the temperature in the box is high, the outlet air temperature after refrigeration can not be reduced too low. The process proceeds to step S2.
S5, judging that the set temperature Ts-delta T is less than or equal to Tin and less than or equal to the set temperature Ts + delta T, if so, entering a step S6, otherwise, entering a step S7.
S6, opening the air door, and starting the compressor and the fan. The return air in the box returns to the air duct from the upper return air inlet and the lower return air inlet respectively, wherein the high-temperature return air returned from the upper return air inlet does not pass through the evaporator, and the high-temperature return air returned from the lower return air inlet can enter the evaporator and is changed into the low-temperature return air after being refrigerated by the evaporator. The two return airs are mixed in the middle of the air duct, sucked by the fan and then flow into the rest space in the box. The air flowing out from the air outlet is mixed with the high-temperature return air and the low-temperature return air and then flows out, so that the air outlet temperature is higher than the air outlet temperature when the return air completely passes through the evaporator, the storage of articles at the air outlet is further facilitated, and meanwhile, the warm air flows through the surface of the whole air channel, so that the surface temperature of the air channel is higher, and the condensation is not easy to occur. The process proceeds to step S2.
S7, the temperature Tin in the box is less than the set temperature Ts-delta T. At the moment, the compressor stops, the evaporator stops refrigerating, the air door is closed, and the fan continues to work. At the moment, all the high-temperature gas in the box returns to the air duct through the lower air return opening, then flows through the evaporator, the frost on the surface of the evaporator is melted by the high-temperature gas in the box, then is sucked by the fan, then flows into the space in the box, and then the temperature in the box continuously rises. The process proceeds to step S2.
As shown in fig. 7, the control process of the refrigeration equipment of the present invention is as follows:
and S1, starting.
S2, detecting the temperature Tin in the box by using the first temperature sensor, and detecting the temperature Tc of the air outlet by using the second temperature sensor.
S3, judging that Tin is larger than the set temperature Ts + Delta T and Tc is larger than or equal to the minimum value of the temperature requirement range, if so, entering the step S4, and otherwise, entering the step S5.
And S4, closing the air door, and opening the compressor and the fan. At the moment, all return air passes through the evaporator, the temperature of all return air is reduced, and then the low-temperature return air rapidly flows to the refrigerating chamber, so that the rapid reduction of the temperature in the refrigerator is realized. At this time, because the temperature in the refrigerator is high, the temperature of the cooled outlet air cannot be reduced too low. The process proceeds to step S2.
S5, judging that Tin is greater than the set temperature Ts +. DELTA.T and Tc is less than the minimum value of the temperature requirement range, if so, entering a step S7, otherwise, entering a step S6.
S6, judging that the set temperature Ts-delta T is less than or equal to Tin and less than or equal to the set temperature Ts + delta T, if so, entering a step S7, otherwise, entering a step S8.
S7, opening a damper, and starting a compressor and a fan. The return air in the box returns to the air duct from the upper return air inlet and the lower return air inlet respectively, wherein the high-temperature return air returned from the upper return air inlet does not pass through the evaporator, and the high-temperature return air returned from the lower return air inlet enters the evaporator and is cooled by the evaporator to become low-temperature return air. The two return airs are mixed in the middle of the air duct, sucked by the fan and then flow into the rest space in the box. The air flowing out from the air outlet is mixed with the high-low temperature return air and then flows out, so that the air outlet temperature is higher than that of the return air when the return air completely passes through the evaporator, and further the storage of articles at the air outlet is facilitated. The process proceeds to step S2.
S8, the temperature Tin in the box is less than the set temperature Ts-Delta T. At the moment, the compressor stops, the evaporator stops refrigerating, the air door is closed, and the fan continues to work. At the moment, all the high-temperature gas in the box returns to the air duct through the lower air return opening, then flows through the evaporator, the frost on the surface of the evaporator is melted by the high-temperature gas in the box, then is sucked by the fan, then flows into the space in the box, and then the temperature in the box continuously rises. The process advances to step S2.
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 modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for some of the features thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. An air duct assembly for a refrigeration appliance, the air duct assembly comprising:
the air duct plate encloses to form an air duct;
the air outlet is positioned on the air duct plate;
the air return opening is positioned on the air duct plate and comprises a first air return opening and a second air return opening;
characterized in that, the wind channel subassembly still includes:
the air outlet is positioned on the air duct plate corresponding to the first air duct, the air return inlet is positioned on the air duct plate corresponding to the second air duct, and the middle air duct plate is provided with an air flow channel communicated with the first air duct and the second air duct;
the air door is positioned in the second air channel, when the air door is closed, the second air channel is divided into a third air channel and a fourth air channel, the first air return opening is positioned on an air channel plate corresponding to the third air channel, and the second air return opening is positioned on an air channel plate corresponding to the fourth air channel;
the fan is positioned in the fourth air channel and used for sending the air in the second air channel into the first air channel through the air flow channel;
the evaporator is positioned in the fourth air duct;
when the air door is controlled to be opened and the fan runs, gas enters the fourth air channel from the second air return opening, passes through the evaporator, then enters the first air channel, enters the third air channel from the first air return opening, passes through the air door, then enters the first air channel, and is discharged from the air outlet; when the air door is controlled to be closed and the fan runs, air enters the fourth air channel from the second air return opening, passes through the evaporator, enters the first air channel and is discharged from the air outlet.
2. The refrigeration unit air duct assembly of claim 1, wherein the fan is located within the airflow passage.
3. The air duct assembly of a refrigerating apparatus as claimed in claim 1, wherein the air flow passage is opposite to a portion of the air duct plate where no air outlet is opened.
4. The air duct assembly of a refrigeration device according to claim 1, wherein the air duct plate comprises a front air duct plate and a rear air duct plate, and the air outlet and the air return opening are both located on the front air duct plate.
5. The air duct assembly of a refrigeration unit of claim 4, wherein the front duct panel includes opposing first and second ends, the first air return opening being located at the first end and the second air return opening being located at the second end.
6. The air duct assembly of a refrigeration device according to claim 4, wherein the front air duct plate includes a third end and a fourth end opposite to each other, the air outlets include a plurality of first air outlets and a plurality of second air outlets, and the first air outlets are located at the third end and the second air outlets are located at the fourth end.
7. A refrigeration device comprising a refrigeration compartment, wherein the refrigeration device comprises the air duct assembly as claimed in any one of claims 1 to 6, and an air outlet and an air return inlet of the air duct assembly are communicated with the refrigeration compartment; the refrigeration apparatus further includes:
the temperature detection module is used for detecting the temperature of the refrigeration compartment;
the control module is used for controlling the compressor and the fan to be started and controlling the air door to be closed when the temperature detected by the temperature detection module exceeds a first set threshold value; and the air door is used for controlling the compressor and the fan to start and controlling the air door to open when the temperature detected by the temperature detection module does not exceed a first set threshold value.
8. The refrigeration appliance according to claim 7, wherein the control module is configured to control the opening of the damper based on a relationship between the temperature of the refrigeration compartment and a first set threshold.
9. The refrigeration apparatus as claimed in claim 7, wherein the control module is configured to control the compressor to stop, the fan to start, and the damper to close when the temperature detected by the temperature detection module is less than a second set threshold, and the second set threshold is less than the first set threshold.
10. The refrigeration device as claimed in claims 7 to 9, wherein the temperature detection module comprises a first temperature sensor located in the refrigeration compartment and a second temperature sensor located at the air outlet, and the control module is configured to control the opening and closing state of the damper according to the temperature detected by the second temperature sensor when the temperature detected by the first temperature sensor exceeds a first set threshold.
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| CN202111182980.8A CN115371323B (en) | 2021-10-11 | 2021-10-11 | Refrigeration equipment and air duct assembly thereof |
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| CN115371323B (en) | 2023-07-21 |
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