CN111380286B - Refrigerator and control method thereof - Google Patents
Refrigerator and control method thereof Download PDFInfo
- Publication number
- CN111380286B CN111380286B CN201811613022.XA CN201811613022A CN111380286B CN 111380286 B CN111380286 B CN 111380286B CN 201811613022 A CN201811613022 A CN 201811613022A CN 111380286 B CN111380286 B CN 111380286B
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- air inlet
- freezing
- refrigerator
- photocatalyst module
- refrigerating
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- 238000000034 method Methods 0.000 title description 7
- 238000007710 freezing Methods 0.000 claims abstract description 78
- 230000008014 freezing Effects 0.000 claims abstract description 78
- 239000011941 photocatalyst Substances 0.000 claims abstract description 58
- 239000000463 material Substances 0.000 claims description 8
- 241000894006 Bacteria Species 0.000 description 9
- 230000006872 improvement Effects 0.000 description 8
- 235000013305 food Nutrition 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 238000009920 food preservation Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 235000013601 eggs Nutrition 0.000 description 1
- 210000001035 gastrointestinal tract Anatomy 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000007420 reactivation Effects 0.000 description 1
- 235000014102 seafood Nutrition 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/042—Air treating means within refrigerated spaces
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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
- F25D17/08—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 using ducts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/04—Treating air flowing to refrigeration compartments
- F25D2317/041—Treating air flowing to refrigeration compartments by purification
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/04—Treating air flowing to refrigeration compartments
- F25D2317/041—Treating air flowing to refrigeration compartments by purification
- F25D2317/0415—Treating air flowing to refrigeration compartments by purification by deodorizing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/04—Treating air flowing to refrigeration compartments
- F25D2317/041—Treating air flowing to refrigeration compartments by purification
- F25D2317/0417—Treating air flowing to refrigeration compartments by purification using an UV-lamp
-
- 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
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
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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
Abstract
The present invention provides a refrigerator, comprising: the refrigerator comprises a box body, a refrigerating chamber and a freezing chamber are limited in the box body, one side of the refrigerating chamber and one side of the freezing chamber are respectively provided with a refrigerating air inlet duct and a freezing air inlet duct, the refrigerating chamber is provided with a refrigerating air inlet communicated with the refrigerating air inlet duct, and the freezing chamber is provided with a freezing air inlet communicated with the freezing air inlet duct; the compressor is arranged at the bottom of the box body; the evaporator is arranged in an evaporator cavity of the box body and can provide cold energy for the refrigerating chamber and the freezing chamber; the fan is arranged above the evaporator and can introduce cold air from the evaporator into the refrigerating air inlet duct and the freezing air inlet duct; the controller is connected with the compressor and the fan; the freezing air inlet is detachably provided with a photocatalyst module, the photocatalyst module is in a three-dimensional grid shape, one side of the photocatalyst module is provided with an ultraviolet lamp, the ultraviolet lamp is connected with a controller, and the controller controls the ultraviolet lamp to be turned on or turned off according to the turning on or turning off of the fan.
Description
Technical Field
The invention belongs to the technical field of household appliances, and particularly relates to a refrigerator and a control method of the refrigerator.
Background
The appearance of the refrigerator brings convenience to the life of people, the refrigerator has a fresh-keeping effect on refrigerated foods, vegetables, meat and eggs and the like, and the refrigerator brings convenience to the life of people to a great extent. Refrigerators generally have a freezer compartment and a refrigerator compartment, the working temperature of which is generally higher than 0 ℃ for keeping food fresh. The working temperature of the freezing chamber can reach minus dozens of degrees generally, and the food can be stored for a long time. However, the long-term storage inevitably causes a lot of bacteria, and the long-term eating of the food can cause certain damage to human bodies, such as digestive tract diseases and the like. For seafood, the peculiar smell is large, if the peculiar smell is not removed in time, the food in the freezing chamber is polluted and tainted with the peculiar smell, so that the polluted food cannot be used, and the waste is caused.
Disclosure of Invention
The invention aims to provide a refrigerator capable of effectively removing odor.
Another object of the present invention is to provide a method of controlling a refrigerator capable of effectively removing smell.
To achieve the above object, the present invention provides a refrigerator including:
the refrigerator comprises a box body, a refrigerating chamber and a freezing chamber are limited in the box body, one side of the refrigerating chamber and one side of the freezing chamber are respectively provided with a refrigerating air inlet duct and a freezing air inlet duct, the refrigerating chamber is provided with a refrigerating air inlet communicated with the refrigerating air inlet duct, and the freezing chamber is provided with a freezing air inlet communicated with the freezing air inlet duct;
the compressor is arranged at the bottom of the box body;
the evaporator is arranged in an evaporator cavity of the box body and can provide cold energy for the refrigerating chamber and the freezing chamber;
the fan is arranged above the evaporator and can introduce cold air from the evaporator into the refrigerating air inlet duct and the freezing air inlet duct;
the controller is connected with the compressor and the fan;
the air conditioner is characterized in that a photocatalyst module is detachably mounted at the position of the freezing air inlet and is in a three-dimensional grid shape, an ultraviolet lamp is arranged on one side of the photocatalyst module and is connected with the controller, and the controller controls the ultraviolet lamp to be turned on or turned off according to the turning on or turning off of the fan.
As a further improvement of an embodiment of the present invention, the photocatalyst module calculates the grid density thereof according to the following formula:
grid density ρ ═ f (V, T, μ) ═ aV + bT + c μ + m;
wherein V is the wind speed of the freezing air inlet, T is the air outlet temperature of the freezing air inlet, mu is the friction coefficient of the photocatalyst material and cold air, a and b are constant coefficients, and m is a constant.
As a further improvement of an embodiment of the present invention, the freezing air inlet protrudes into the freezing chamber, and includes a top wall, an opposite bottom wall, and two side walls connected between the top wall and the bottom wall, at least one of the side walls is provided with a through hole, and the ultraviolet lamp is embedded in the through hole.
As a further improvement of an embodiment of the present invention, the through hole is disposed at a position close to the top wall, and an extending direction of the through hole is inclined with respect to the top wall to guide an emergent light direction of the ultraviolet lamp toward the bottom wall.
As a further improvement of an embodiment of the present invention, a side wall of the photocatalyst module is provided with at least two first positioning pillars, one of the top wall and the bottom wall is provided with at least two first positioning holes, and the photocatalyst module is inserted into the at least two first positioning holes through the at least two first positioning pillars to be installed in the freezing air inlet.
As a further improvement of the embodiment of the present invention, another sidewall of the photocatalyst module is provided with at least two second positioning pillars, the sidewall provided with the first positioning pillar is opposite to the sidewall provided with the second positioning pillar, and the at least two second positioning pillars elastically stretch along the extending direction thereof to abut against the other of the top wall and the bottom wall.
As a further improvement of an embodiment of the present invention, the at least two first positioning pillars and the at least two second positioning pillars are staggered along a direction from one side wall to the other side wall of the freezing air inlet.
As a further improvement of the embodiment of the present invention, a sum of an elastic expansion amount of the second positioning post and a height of the corresponding second positioning hole is smaller than a normal height of the second positioning post.
As a further improvement of an embodiment of the present invention, the shape of the photocatalyst module matches the shape of the freezing air inlet, and the photocatalyst module is embedded in the freezing air inlet.
The invention also relates to a control method of the refrigerator according to any one of the previous embodiments, comprising the following steps:
starting a compressor and a fan;
turning on the ultraviolet lamp;
detecting whether the opening time of the fan exceeds the preset time or not, and if so, turning off the ultraviolet lamp;
and detecting whether the fan is in a closed state, and if the fan is closed, closing the ultraviolet lamp.
Compared with the prior art, the refrigerator freezing chamber provided by the invention has the advantages that the photocatalyst module arranged in the freezing air inlet and the matched ultraviolet lamp play a role in circulating and filtering cold air when the cold air passes through, bacteria and peculiar smell substances in the cold air are purified by utilizing the oxidability excited by ultraviolet rays of the photocatalyst, so that the freezing chamber of the refrigerator is in a sterile and fresh state, and the food preservation and the user experience of the refrigerator are facilitated.
Drawings
Fig. 1 is a schematic sectional view of a refrigerator in a preferred embodiment of the present invention;
FIG. 2 is a schematic exploded perspective view of a freezing air inlet and a photocatalyst module of the refrigerator of FIG. 1;
FIG. 3 is a side view of the refrigerated air intake of FIG. 2 assembled with a photocatalyst module;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is a cross-sectional view of an alternative construction of the freezing intake vent of FIG. 2;
fig. 6 is a flowchart of a control method of a refrigerator in a preferred embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the present invention.
It will be understood that terms used herein such as "outer," "inner," and the like, refer to relative positions in space and are used for convenience in description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.
The preferred refrigerator 100 of the present invention includes a cabinet defining at least two refrigeration compartments, a refrigerating compartment 20 and a freezing compartment 30, respectively, with the refrigerating compartment 20 and the freezing compartment 30 generally disposed from top to bottom. Of course, three refrigeration compartments arranged from top to bottom or other configurations, such as left and right, are also possible. In this embodiment, a direction in which the refrigerating chamber 20 and the freezing chamber 30 are arranged from top to bottom is defined as a height direction of the refrigerator, a direction in which a user opens the refrigerator to face and back to the refrigerator door is defined as a front-back direction of the refrigerator, and a direction perpendicular to the height direction and the front-back direction is defined as a width direction of the refrigerator.
The refrigerator 100 also has a compressor 80, an evaporator 50, and a fan 60, the compressor 80 being disposed at the bottom of the cabinet, and the evaporator 50 being disposed in an evaporator chamber at the rear of the freezing chamber 30 of the cabinet for supplying cooling energy to the freezing chamber 30 and the refrigerating chamber 20. The evaporator 50 is provided at a lower portion thereof with a defroster 70, and a compressor 80 is provided at a rear side of a bottom of the refrigerator. The evaporator 50 may be any one of known evaporators, such as one of a fin evaporator, a wire tube evaporator, a roll-bond evaporator, and a plate tube evaporator. In the present embodiment, the refrigerator 100 constitutes a compression refrigeration cycle by the compressor 80, a condenser (not shown), and the evaporator 50.
Referring to fig. 1 to 4, in the present embodiment, one sides of the refrigerating compartment 20 and the freezing compartment 30 are respectively provided with a refrigerating air intake duct 21 and a freezing air intake duct 31, the refrigerating compartment 20 is provided with a refrigerating air intake opening 22 communicating with the refrigerating air intake duct 21, the freezing compartment 30 is provided with a freezing air intake opening 32 communicating with the freezing air intake duct 31, and the fan 60 can introduce cold air from the evaporator 50 into the refrigerating air intake duct 21 and the freezing air intake duct 31. The controller of the refrigerator is connected to the compressor 80 and the blower fan 60, and is used for controlling the on and off of the compressor 80 and the blower fan 60. The freezing air inlet 32 is detachably provided with a photocatalyst module 40, the photocatalyst module 40 is in a three-dimensional grid shape, one side of the photocatalyst module 40 is provided with an ultraviolet lamp 45, the ultraviolet lamp 45 is connected with a controller, and the controller controls the ultraviolet lamp 45 to be turned on or turned off according to the turning on or turning off of the fan 60.
Specifically, the photocatalyst module 40 calculates the grid density thereof according to the following formula:
grid density ρ ═ f (V, T, μ) ═ aV + bT + c μ + m;
wherein V is the wind speed of the freezing air inlet 32, T is the air outlet temperature of the freezing air inlet 32, μ is the friction coefficient between the photocatalyst material and the cold air, a and b are constant coefficients, and m is a constant.
The air outlet temperature is also different due to different types of refrigerators, the friction coefficient of the photocatalyst material and cold air is also different, and the constant coefficient and the constant value can be calculated by extracting the air speed of different freezing air inlets, the air outlet temperature of the freezing air inlets and the data of the friction coefficient of the photocatalyst material and the cold air so as to select the appropriate grid density of the photocatalyst module under different conditions.
Referring to fig. 2 to 4, the freezing air inlet 32 protrudes into the freezing chamber 30, and includes a top wall 321, an opposite bottom wall 322, and two side walls 323 connected between the top wall 321 and the bottom wall 322, at least one of the side walls 323 is provided with a through hole 324, and the ultraviolet lamp 45 is embedded in the through hole 324. Through-hole 324 can set up in the middle part of one of them lateral wall 323, the extending direction of through-hole 324 is on a parallel with roof 321, thus, the emergent light direction of ultraviolet lamp 45 is towards another lateral wall, be the grid form because of photocatalyst module 40, the photocatalyst material on photocatalyst module 40 can be abundant shone to ultraviolet lamp 45, the photocatalysis photocatalyst, thereby produce strong catalytic degradation effect, can effectually disinfect to the various bacterium that produce in the freezer 30, can also effectively decompose the harmful complex who is released by the dead body of bacterium when disinfecting, the peculiar smell in the freezer has still been detached simultaneously.
In this embodiment, the shape of the photocatalyst module 40 matches the shape of the freezing air inlet 32, and the photocatalyst module 40 is embedded in the freezing air inlet 32. The freezing air inlet 32 is rectangular, and the photocatalyst module 40 is also rectangular and is embedded in the freezing air inlet 32.
In order to facilitate the installation of the photocatalyst module 40, a side wall of the photocatalyst module 40 is provided with at least two first positioning posts 41, one of the top wall 321 and the bottom wall 322 is provided with at least two first positioning holes 341, and the photocatalyst module 40 is correspondingly inserted into the at least two first positioning holes 341 through the at least two first positioning posts 41 to be installed in the freezing air inlet 32. This ensures that the photocatalyst module 40 is more reliably mounted. Further, another sidewall of the photocatalyst module 40 is provided with at least two second positioning posts 42, the sidewall provided with the first positioning post 41 is opposite to the sidewall provided with the second positioning posts 42, the at least two second positioning posts 42 elastically stretch along the extending direction thereof to abut against the other one of the top wall 321 and the bottom wall 322, and the other one of the top wall 321 and the bottom wall 322 may also be provided with at least two second positioning holes 342, and the at least two second positioning posts 42 are correspondingly inserted into the at least two second positioning holes 342. All set up the reference column through the upper and lower both sides at photocatalyst module 40 for photocatalyst module 40's rigidity uses more reliably. In addition, at least two first positioning posts 41 may be provided to elastically expand and contract in the extending direction thereof. Preferably, at least two first positioning columns 41 and at least two second positioning columns 42 are arranged to be staggered along the direction from one side wall of the freezing air inlet 32 to the other side wall, and certainly, the positions of the first positioning columns 41 and the second positioning columns 42 are staggered along the front-back direction of the photocatalyst module 40, so that multi-point support of the photocatalyst module 40 is realized, and the installation is more stable.
In addition, for the convenience of installation and disassembly, at least two first positioning posts 41 can elastically stretch and contract along the extending direction thereof to abut against one of the top wall 321 and the bottom wall 322, and preferably, the sum of the elastic stretching amount of the first positioning post 41 or the second positioning post 32 and the height of the corresponding first positioning hole 341 or the second positioning hole 342 is smaller than the normal height of the first positioning post 41 or the second positioning post 42, so that the first positioning post 41 or the second positioning post 42 is compressed to the limit position, the installation to the first positioning post 41 or the second positioning post 42 is facilitated, and a gap is left between the photocatalyst module 40 and the top wall 321 or the bottom wall 322, and the maintenance of the refrigerator or the disassembly of the photocatalyst module 40 is facilitated. In the present embodiment, the first positioning post 41 and/or the second positioning post 42 may be configured as a rigid positioning post compressed by a linear spring, or the first positioning post 41 and/or the second positioning post 42 may be configured as an elastic positioning post.
Referring to fig. 5, another structure of the freezing air inlet 32 on the refrigerator is shown, wherein the through hole 324a is disposed at a position close to the top wall 321, the extending direction of the through hole 324a is inclined with respect to the top wall 321 to guide the light emitting direction of the ultraviolet lamp 45a toward the bottom wall 322, and by inclining the ultraviolet lamp 45a, the light emitting direction of the ultraviolet lamp 45a is approximately matched with the diagonal direction of the four photocatalyst modules 40, so that the illumination area of the ultraviolet lamp 40 covers more photocatalyst material.
Through the photocatalyst module 40 arranged in the freezing air inlet 32 and the matched ultraviolet lamp 45, the circulation filtering effect is achieved when cold air passes through, bacteria and peculiar smell substances in the cold air are purified by utilizing the oxidability excited by ultraviolet rays of the photocatalyst, so that a refrigerating chamber of the refrigerator is in an aseptic and fresh state, and the food preservation and the user experience of the refrigerator are facilitated.
Referring to fig. 6, the present invention also relates to a control method of the refrigerator, comprising the following steps:
starting the compressor 80 and the fan 60;
turning on the ultraviolet lamp 45;
detecting whether the opening time of the fan 60 exceeds the preset time, and if so, turning off the ultraviolet lamp 45;
and detecting whether the fan 60 is in a closed state, and if the fan 60 is closed, closing the ultraviolet lamp 45.
In the above steps, when the ultraviolet lamp 45 is turned on, the photocatalyst module 40 absorbs the ultraviolet ray generating capacity, and the polymer is subjected to oxidative decomposition, because the ultraviolet lamp 45 is arranged on one side wall of the freezing air outlet 32, most of the emergent light irradiates on the photocatalyst material, and few parts of the emergent light irradiate on the refrigerator liner, certainly, in order to protect the refrigerator liner, the turning-on time of the ultraviolet lamp 45 needs to be reasonably controlled, so that the ultraviolet lamp 45 is turned on for a preset time when the fan 60 is turned on, and considering that the mixed bacteria in the air flow when the fan 60 is just started and the density of the peculiar smell is greater than the mixed bacteria in the air flow after the fan 60 is started for a certain time, the peculiar smell density is greater than the density of the mixed bacteria and the peculiar smell, so that the energy is saved, the refrigerator liner can be protected at the same time, and the service life of the refrigerator is prolonged.
Of course, if the fan 60 is turned off before the preset time, the ultraviolet lamp 45 may not be turned on, so as to avoid energy waste caused by the fact that the ultraviolet lamp 45 is turned on and does not play a corresponding role. Each time the uv lamp 45 is turned off, its activation is judged based on the re-activation of the blower 60. Therefore, bacteria and peculiar smell in the freezing chamber can be removed, energy is saved, and the service life of the refrigerator is prolonged.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (8)
1. A refrigerator, comprising:
the refrigerator comprises a box body, a refrigerating chamber and a freezing chamber are limited in the box body, one side of the refrigerating chamber and one side of the freezing chamber are respectively provided with a refrigerating air inlet duct and a freezing air inlet duct, the refrigerating chamber is provided with a refrigerating air inlet communicated with the refrigerating air inlet duct, and the freezing chamber is provided with a freezing air inlet communicated with the freezing air inlet duct;
the compressor is arranged at the bottom of the box body;
the evaporator is arranged in an evaporator cavity of the box body and can provide cold energy for the refrigerating chamber and the freezing chamber;
the fan is arranged above the evaporator and can introduce cold air from the evaporator into the refrigerating air inlet duct and the freezing air inlet duct;
the controller is connected with the compressor and the fan;
the refrigerator is characterized in that a photocatalyst module is detachably mounted at the position of the freezing air inlet, the photocatalyst module is in a three-dimensional grid shape, an ultraviolet lamp is arranged on one side of the photocatalyst module and connected with the controller, the controller controls the ultraviolet lamp to be turned on or turned off according to the turning on or turning off of the fan, the ultraviolet lamp is turned on for a preset time when the fan is started, and the ultraviolet lamp is not turned on if the turning on time of the fan is shorter than the preset time;
the photocatalyst module calculates the grid density according to the following formula:
grid density ρ = f (V, T, μ) = aV + bT + c μ + m;
wherein V is the wind speed of the freezing air inlet, T is the air outlet temperature of the freezing air inlet, mu is the friction coefficient of the photocatalyst material and cold air, a and b are constant coefficients, and m is a constant.
2. The refrigerator as claimed in claim 1, wherein the freezing air inlet protrudes into the freezing chamber, and includes a top wall, an opposite bottom wall, and two side walls connected between the top wall and the bottom wall, at least one of the side walls is provided with a through hole, and the ultraviolet lamp is inserted into the through hole.
3. The refrigerator as claimed in claim 2, wherein the through hole is provided near the top wall, and an extending direction of the through hole is inclined with respect to the top wall to guide an emitting light direction of the ultraviolet lamp toward the bottom wall.
4. The refrigerator as claimed in claim 2, wherein a sidewall of the photocatalyst module is provided with at least two first positioning posts, and one of the top wall and the bottom wall is provided with at least two first positioning holes, and the photocatalyst module is inserted into the at least two first positioning holes through the at least two first positioning posts to be mounted to the freezing air inlet.
5. The refrigerator as claimed in claim 4, wherein the other sidewall of the photocatalyst module is provided with at least two second positioning posts, the sidewall of the first positioning post is opposite to the sidewall of the second positioning post, and the at least two second positioning posts elastically extend and contract along the extending direction thereof to abut against the other one of the top wall and the bottom wall.
6. The refrigerator as claimed in claim 5, wherein the at least two first positioning posts and the at least two second positioning posts are staggered along a direction from one side wall to the other side wall of the freezing air inlet.
7. The refrigerator as claimed in claim 5, wherein the sum of the elastic expansion amount of the second positioning post and the height of the corresponding second positioning hole is smaller than the normal height of the second positioning post.
8. The refrigerator as claimed in claim 1, wherein the photocatalyst module has a shape matching the shape of the freezing air inlet, and the photocatalyst module is embedded in the freezing air inlet.
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| CN201811613022.XA CN111380286B (en) | 2018-12-27 | 2018-12-27 | Refrigerator and control method thereof |
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| CN201811613022.XA CN111380286B (en) | 2018-12-27 | 2018-12-27 | Refrigerator and control method thereof |
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| CN111380286A CN111380286A (en) | 2020-07-07 |
| CN111380286B true CN111380286B (en) | 2022-01-25 |
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| CN111380286A (en) | 2020-07-07 |
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