CN105674658A - Refrigerator and control method thereof - Google Patents
Refrigerator and control method thereof Download PDFInfo
- Publication number
- CN105674658A CN105674658A CN201610077296.6A CN201610077296A CN105674658A CN 105674658 A CN105674658 A CN 105674658A CN 201610077296 A CN201610077296 A CN 201610077296A CN 105674658 A CN105674658 A CN 105674658A
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- air
- cabinet
- mixing chamber
- circulation
- outlet
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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
- 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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- 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 discloses a refrigerator and a control method thereof. The refrigerator comprises a refrigerator body, wherein the refrigerator body is provided with an air duct structure enabling an open part of the refrigerator body to form a first air curtain and a second air curtain; the first air curtain is located at the outer side of the second air curtain; and the temperature of the second air curtain is higher than that of the first air curtain. According to the refrigerator disclosed by the invention, the first air curtain and the second air curtain are formed on a refrigerator frame of the refrigerator body, and are capable of preventing internal temperature and humidity, and external temperature and humidity from direct exchange in an open state of a refrigerator door; because the temperature of the first air curtain located at the outer side is low, a cold moisture layer is formed after mixing of the first air curtain and external damp and hot air, and contains lots of moisture; and the second air curtain located at the inner side and with the high temperature is capable of forming a layer of protection and preventing moisture from entering the refrigerator body, thus the stable changes of the temperature and humidity in the refrigerator within a certain range after the refrigerator door is opened, are ensured.
Description
Technical field
The invention belongs to refrigerating field, be specifically related to a kind of refrigerator and control method thereof.
Background technology
In the market all of Freezer Products only refrigerator close the door operation after or when climatic environment is more moderate temperature and humidity in guarantee cabinet in a certain claimed range. In rainy season and the winter cold in the north of southern humidity, (it is used for accessing the operating time of thing) after opening the door one minute, the change of humidity and high temperature. Especially to being used for storing the refrigerator of the particular product such as medicine, keep in-cabinet temperature, the stability of humidity is even more important, the change of humidity and high temperature, it is possible to can cause loss of drug potency, go bad, and then have influence on the life security of patient, cause great malpractice.
Summary of the invention
It is an object of the invention to for the deficiencies in the prior art, it is provided that a kind of ensure to open the door after temperature within refrigerator, humidity smooth change within the specific limits refrigerator.
To achieve these goals, the present invention is achieved through the following technical solutions: a kind of refrigerator, including cabinet, described cabinet is provided with and makes the opening of cabinet form the first air curtain and the air channel structure of the second air curtain, first air curtain is positioned at outside the second air curtain, and the temperature of the second air curtain is higher than the temperature of the first air curtain.
In such scheme, in refrigerator cabinet frame, form double-deck air curtain, in cabinet door open mode, intercept inside and outside humiture and directly exchange, it is ensured that temperature within refrigerator, humidity smooth change within the specific limits after enabling.
Further, above-mentioned air channel structure includes being located at the circulation air path in the wall portion of cabinet, the vaporizer being located in circulation air path and the first blower fan, one end of circulation air path is provided with air inlet, the other end of circulation air path is respectively equipped with first and second air outlet, first and second air outlet is positioned at the cabinet arch of the opening of cabinet, and first and second air outlet opening down, first air outlet is positioned at the outside of the second air outlet, the air-flow that first air outlet flows out forms the first air curtain, and the air-flow that the second air outlet flows out forms the second air curtain. When user need to open the door in cabinet, carry out depositing work time, first conveying instruction makes the first blower fan send cold wind toward first and second air outlet, now, first and second air outlet is formed about bilayer at refrigerator cabinet frame and crosses cooling air curtain (all lower than the inside and outside temperature of cabinet) vertically downward, intercept inside and outside humiture directly to exchange, and air curtain nor affects on user and carries out accessing operation.
In order to realize air circulation in cabinet, the air inlet of above-mentioned circulation air path and the inner space of cabinet, the first blower fan is reversible blower fan.Adopt reversible blower fan, it is possible to achieve utilize a circulation air path to realize air curtain and form the circulation with cabinet endogenous wind.
Operating temperature range in above-mentioned cabinet is 8 DEG C～20 DEG C, humidity range is 35%～75%.
So that the temperature of the air-flow flowed out higher than the first air outlet from the temperature of the air-flow of the second air outlet outflow, reduce the steam formed outside cabinet and enter in cabinet, it is provided with air mixing chamber in the air channel of section between corresponding second air outlet of above-mentioned circulation air path and vaporizer, air mixing chamber one end connects with circulation air path, the air mixing chamber other end and the connection of the second air outlet, air mixing chamber offers auxiliary air port, auxiliary is provided with the second blower fan in air port, the outlet in auxiliary air port connects with air mixing chamber, assists the entrance in air port and the inner space of cabinet.
In another program, same so that be higher than the temperature of the air-flow that the first air outlet flows out from the temperature of the air-flow of the second air outlet outflow, reduce the steam formed outside cabinet and enter in cabinet, it is provided with air mixing chamber in the air channel of section between corresponding second air outlet of above-mentioned circulation air path and vaporizer, air mixing chamber one end connects with circulation air path, the air mixing chamber other end and the connection of the second air outlet, be provided with heater in air mixing chamber. The thermograde being realized first and second air outlet outflow wind existence by heater is poor.
Further, above-mentioned air mixing chamber offers auxiliary air port, is provided with and is provided with movable valve, close door state in auxiliary air port, and movable valve is opened, and assists air port and the common air intake of first and second air outlet, improves air circulation.
Yet another aspect, same so that be higher than the temperature of the air-flow that the first air outlet flows out from the temperature of the air-flow of the second air outlet outflow, reduce the steam formed outside cabinet and enter in cabinet, it is provided with air mixing chamber in the air channel of section between corresponding second air outlet of above-mentioned circulation air path and vaporizer, air mixing chamber one end connects with circulation air path, the air mixing chamber other end and the connection of the second air outlet, air mixing chamber offers auxiliary air port, auxiliary is provided with air pressure pump in air port, the outlet of air pressure pump connects with air mixing chamber, the entrance of air pressure pump and the inner space of cabinet.
Above-mentioned first and second air outlet is respectively equipped with commutator, the rectification hole of commutator is downward, and described in be arranged in the commutator of the first air outlet higher than the commutator being arranged in the second air outlet, and the commutator being arranged in the first air outlet is parallel with the commutator being arranged in the second air outlet. The rectification hole of commutator can be rectified into vertical parallel gentle wind the eddy current of the first blower fan blowout, and according to the heavy principle of cold air, near refrigerator cabinet frame, the vertical formation that the declines internal temperature humidity with environment of double-deck air curtain blocking cabinet exchanges. The radius R of the rectification hole of above-mentioned commutator is 1.5mm to 2.5mm. Avoid, because the too small resistance to wind of rectification hole is excessive, affecting the formation of air curtain.
It is a further object to provide a kind of not only can ensure refrigerator open the door after temperature in cabinet, humidity smooth change within the specific limits, but also the control method of the refrigerator of air circulation in cabinet can be realized, the method includes: whether detection freezer door body is opened, as detected, freezer door body is closed mode, first blower fan is controlled to be rotated toward direction of closing the door, realize entering circulation air path from first and second air outlet air draught, then discharge from the air inlet of circulation air path so that air circulation in cabinet; As detected, freezer door body is open mode, and the first blower fan is controlled to be rotated backward, it is achieved enter circulation air path from air inlet air draught, then discharges from first and second air outlet so that refrigerator opening cabinet frame is formed about double-deck air curtain downwards.
The present invention by forming first and second air curtain in the cabinet frame of cabinet; in cabinet door open mode; first and second air curtain can intercept inside and outside humiture and directly exchange; temperature owing to being positioned at first air curtain in outside is relatively low; first air curtain can form cold water vapour layer after crossing with extraneous damp-heat air; containing substantial amounts of steam; and the second air curtain being positioned at the higher temperature of inner side can form one layer of protection; prevent steam from entering inside cabinet, thus temperature within refrigerator, humidity smooth change within the specific limits after ensureing to open the door.
Accompanying drawing explanation
Fig. 1 is the front view of the refrigerator of the embodiment of the present invention.
Fig. 2 is A-A sectional view in Fig. 1.
Fig. 3 is B portion enlarged drawing in Fig. 2.
Fig. 4 is the air-flow schematic diagram of the refrigerator pass door state of the embodiment of the present invention.
Fig. 5 is the air-flow schematic diagram of the refrigerator door opening state of the embodiment of the present invention.
Fig. 6 is the upward view of embodiment of the present invention commutator.
Fig. 7 is D portion enlarged drawing in Fig. 6.
Fig. 8 is C-C sectional view in Fig. 6.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described, but embodiments of the present invention are not limited to this. In describing the invention, it will be appreciated that, if have term " on ", D score, "left", "right", " vertically ", the orientation of the instruction such as " level " or position relationship be for based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than instruction or hint indication device or element must have specific orientation, with specific azimuth configuration and operation, therefore term the being merely cited for property explanation of position relationship described in accompanying drawing, it is impossible to be interpreted as the restriction to this patent.
Embodiment 1
Structural reference Fig. 1 to 3 of the refrigerator of the present embodiment, including cabinet 1, and make to be formed in the opening cabinet frame of cabinet 1 air channel structure of the first air curtain and the second air curtain, described air channel structure includes the circulation air path 11 being located at the wall portion of cabinet 1, it is located at the vaporizer 2 in circulation air path 11 and the first blower fan 4, one end of circulation air path 11 is provided with air inlet 33, the other end of circulation air path 11 is respectively equipped with first, two air outlets 31, 32, first, two air outlets 31, the 32 cabinet arch being positioned at cabinet 1 opening, the air inlet 33 of circulation air path 11 and the inner space of cabinet 1, first, two air outlets 31, the opening vertical-horizontal of 32 faces down, first air outlet 31 is positioned at the outside of the second air outlet 32, the air-flow of the first air outlet 31 blowout forms the first air curtain vertically downward, the air-flow of the second air outlet 32 blowout forms the second air curtain vertically downward, first air curtain is positioned at outside the second air curtain, and second the temperature of air curtain higher than the temperature of the first air curtain. when user needs enabling to carry out access work, intelligent controller 8 is first allowed to export an instruction, the realization of controller 8 output order can automatically obtain or control manually, controller 8 output order controls the first blower fan 4 toward first, two air outlets 31, 32 send cold wind, air sucks circulation air path 11 from air inlet 33, it is then passed through after vaporizer 2 respectively from first, two air outlets 31, 32 discharge and are formed about first vertically downward at the cabinet frame of cabinet opening, two air curtains, due to formed this first, the air-flow of two air curtains is through evaporator 2, therefore this first, the temperature of two air curtains is all lower than the inside and outside temperature of cabinet, intercept humiture inside and outside cabinet directly to exchange, and air curtain nor affects on user and carries out accessing operation. in addition, and owing to the temperature of the second air curtain is higher than the temperature of the first air curtain, the first air curtain outside being positioned at is low due to temperature, cold water vapour layer can be formed after crossing with extraneous damp-heat air, containing substantial amounts of steam, and the second air curtain of higher temperature being positioned at inner side can form one layer of protection, it is prevented that inside steam entrance cabinet, it is ensured that temperature within refrigerator, humidity smooth change within the specific limits after enabling.
Owing to can there is eddy current through the air-flow of blower fan, formation in order to avoid vortes interference air curtain, above-mentioned first, two air outlets 31, 32 are respectively equipped with commutator 7, the rectification hole 71 of commutator 7 is downward, preferably, it is arranged in the commutator 7 of the first air outlet 31 higher than the commutator 7 being arranged in the second air outlet 32, and the commutator 7 that is arranged in the first air outlet 31 is parallel with the rectification hole of the commutator 7 being arranged in the second air outlet 32, rectification hole 71 is perpendicular to horizontal plane down, commutator 7 is really and carries out cutting rectification to wind by series of parallel circular rectification hole 71, the more little wind of rectification hole 71 is more smooth in theory, but it is too small again that the resistance of wind is excessive, affect the formation of air curtain, therefore, the radius R selecting the rectification hole 71 of commutator 7 is 1.5mm to 2.5mm, the radius R of preferred rectification hole 71 is 2mm, avoid because the too small resistance to wind of rectification hole 71 is excessive, affect the formation of air curtain.The structure of commutator 7 such as Fig. 6 is to shown in 8.
The refrigeration mode of the present embodiment can be direct-cooled refrigeration-type, by the free convection of the evaporator surface low temperature in cabinet, thus reducing in-cabinet temperature; Can also being air-cooled refrigeration-type, cold air be forced to be blown in cabinet space by cooling air duct, causes circulation, reduces in-cabinet temperature.
Embodiment 2
The freezer structure of the present embodiment is similar to Example 1, difference is: the air inlet 33 of above-mentioned circulation air path 11 is positioned at the rear side inwall of cabinet 1, and the first blower fan 4 is reversible blower fan, adopts reversible blower fan, air can be realized in circulation air path 11 two-way flow so that circulate before and after air in cabinet. Close door state, first blower fan 4 is controlled rotates (such as rotating clockwise) toward direction of closing the door, air is made to suck circulation air path 11 from first and second air outlet 31,32, then pass through vaporizer 2 and be drained in cabinet from the air inlet 33 of circulation air path 11 again, by continuous circulation, make to keep in cabinet the temperature and humidity of a certain scope, as shown in Figure 4 (arrow represents airflow direction); Door opening state, the controlled reversion of first blower fan 4 (rotating counterclockwise), air flow direction generation reflux in circulation air path 11, air sucks circulation air path 11 from the air inlet 33 of circulation air path 11, then pass through vaporizer 2 to discharge from first and second air outlet 31,32 respectively again and be formed about first and second supercool vertically downward air curtain at the cabinet frame of cabinet opening, as shown in Figure 5 (arrow represents airflow direction). Ensureing that refrigerator is when normal operation, the temperature range in cabinet 1 is 8 DEG C～20 DEG C, humidity range is 35%～75%, it is ensured that the storage temperature required for special medicine or storing, humidity requirement.
Embodiment 3
The freezer structure of the present embodiment is similar to Example 2, difference is: so that first, two air outlets 31, the thermograde that 32 air-flows flowed out exist is poor, the temperature from the air-flow of the second air outlet 32 outflow is made to be higher than the temperature of the air-flow that the first air outlet 31 flows out, ensure the temperature temperature higher than the first air curtain of the second air curtain, reduce the steam formed outside cabinet and enter in cabinet, it is provided with air mixing chamber 111 in the air channel of section between corresponding second air outlet 32 of above-mentioned circulation air path 11 and vaporizer 2, air mixing chamber 111 one end connects with circulation air path 11, air mixing chamber 111 other end and the second air outlet 32 connect, air mixing chamber 111 offers auxiliary air port 5, auxiliary air port 5 is positioned at cabinet 1 inner top, auxiliary air port 5 is by air mixing chamber 111 and cabinet 1 inner space, the second blower fan 6 it is provided with in the auxiliary air port 5 of the present embodiment, the outlet in auxiliary air port 5 connects with air mixing chamber 111, the entrance in auxiliary air port 5 and the inner space of cabinet 1. Freezer Products lifting temperature homogeneity and the air curtain effect of big volume are had very important lifting by the position in auxiliary air port 5 and the air quantity design of the second blower fan 6, the position that arranges in auxiliary air port 5 should be select close proximity to cabinet intracavity portion, if the stability of air curtain can be affected near doorway, and the air quantity of the second blower fan 6 is unsuitable excessive, air themperature relative evaporation device air outlet in air mixing chamber 111 can being improved 3 DEG C～6 DEG C, therefore the second blower fan 6 is preferably with for DC fan. owing to the air quantity of circulation air path 11 demand is relatively big, therefore AC blower fan selected by the first blower fan 4. one end that above-mentioned air mixing chamber 111 correspondence connects with circulation air path 11 offers multiple cutoff hole, and air mixing chamber 111 is connected with circulation air path 11 by cutoff hole.Under door opening state, the higher air of in-cabinet temperature that the second blower fan 6 the extracts air relatively low with the temperature that vaporizer 2 directly distributes carries out mixing in air mixing chamber 111 and realizes temperature lifting. Owing to the design air flow of the second blower fan 6 is far smaller than reversible exchange the first blower fan 4, under the sweeping along of the first blower fan 4, the second air curtain layer that the downward formation temperature of air-flow that the rectification hole 71 along the second air outlet 32 blows out is higher. The first air curtain that the air-flow of rectification hole 71 blowout of the first air outlet 31 is formed is low due to temperature; cold water vapour layer can be formed after crossing with extraneous damp-heat air; containing substantial amounts of steam; and the second air curtain layer being positioned at the higher temperature of inner side can form one layer of protection, it is prevented that steam enters inside cabinet. First and second air curtain layer intercepts the temperature humidity of refrigerator inner chamber and environment and exchanges, and outer air is finally discharged outside refrigerator, is recycled in air, can form negative pressure in this process in refrigerator, disturbs the formation of air curtain. But, it is contemplated that the refrigerator of the present invention, the main purpose of enabling is accessing article, no matter article size, and the stretching into stretch out of hands all penetrates air curtain. In this process, being equivalent to open a cavity without any obstacle in air curtain, extraneous air-flow can enter inside refrigerator along the position of hands, reaches internal and external pressure balance.
Optionally, when closing behind the door, the first reversible blower fan 4 backing of the wind, the second blower fan 6 becomes again and inputs wind regime in the same direction with the first blower fan 4 so that in cabinet, air is circulated, and improves the temperature homogeneity within refrigerator.
The control method of the present embodiment is as follows: close door state, first blower fan 4 is controlled rotates (such as rotating clockwise) toward direction of closing the door, air is made to suck circulation air path 11 from first and second air outlet 31,32 and auxiliary air port 5, then pass through vaporizer 2 and be drained in cabinet from the air inlet 33 of circulation air path 11 again, by continuous circulation, making to keep in cabinet the temperature and humidity of a certain scope, the operating of the second blower fan 6 substantially increases the air quantity entering circulation air path 11, door opening state, the controlled reversion of first blower fan 4 (rotating counterclockwise), air flow direction generation reflux in circulation air path 11, air sucks circulation air path 11 from the air inlet 33 of circulation air path 11, then pass through after vaporizer 2 more respectively from first, two air outlets 31, 32 discharge and are formed about vertically downward supercool first at the cabinet frame of cabinet opening, two air curtains, the higher air of in-cabinet temperature that second blower fan 6 the extracts air relatively low with the temperature that vaporizer 2 directly distributes carries out mix the air themperature realizing lifting from the second air outlet 32 discharge in air mixing chamber 111.
Embodiment 4
The freezer structure of the present embodiment is similar to Example 2, difference is: be provided with air mixing chamber 111 in the air channel of section between corresponding second air outlet 32 of above-mentioned circulation air path 11 and vaporizer 2, air mixing chamber 111 one end connects with circulation air path 11, air mixing chamber 111 other end and the second air outlet 32 connect, air mixing chamber 111 offers auxiliary air port 5, auxiliary air port 5 is positioned at cabinet 1 inner top, auxiliary air port 5 is by air mixing chamber 111 and cabinet 1 inner space, auxiliary is provided with movable valve in air port 5, during door opening state, movable valve closing, auxiliary air port 5 is enclosed, air-flow is all from first, two air outlets 31, 32 discharge, when closing door state, movable valve is opened, and the first blower fan 4 reverses, and air is inhaled in entrance circulation air path 11 from first and second air outlet 31,32 and auxiliary air port 5, improves air circulation.
The control method of the present embodiment: close door state, first blower fan 4 is controlled rotates (such as rotating clockwise) toward direction of closing the door, movable valve is opened, air is made to suck circulation air path 11 from first and second air outlet 31,32 and auxiliary air port 5, then pass through vaporizer 2 and be drained in cabinet from the air inlet 33 of circulation air path 11 again, by continuous circulation so that keep the temperature and humidity of a certain scope in cabinet; Door opening state, the controlled reversion of first blower fan 4 (rotating counterclockwise), movable valve closing, auxiliary air port 5 is enclosed, air flow direction generation reflux in circulation air path 11, air sucks circulation air path 11 from the air inlet 33 of circulation air path 11, discharges from first and second air outlet 31,32 respectively again and be formed about first and second supercool vertically downward air curtain at the cabinet frame of cabinet opening after then passing through vaporizer 2.
Embodiment 5
The freezer structure of the present embodiment is similar to Example 2, difference is: be provided with air mixing chamber 111 in the air channel of section between corresponding second air outlet 32 of above-mentioned circulation air path 11 and vaporizer 2, air mixing chamber 111 one end connects with circulation air path 11, air mixing chamber 111 other end and the second air outlet 32 connect, air mixing chamber 111 offers auxiliary air port 5, auxiliary air port 5 is positioned at cabinet 1 inner top, auxiliary air port 5 is by air mixing chamber 111 and cabinet 1 inner space, auxiliary is provided with movable valve in air port 5, and it is provided with heater in air mixing chamber 111, the air themperature flowing through air mixing chamber 111 is promoted by heater. during door opening state, movable valve closing, auxiliary air port 5 is enclosed, air through air mixing chamber 111 is heated by heater, heated air is finally discharged from the second air outlet 32, make the thermograde that the air-flow flowed out from first and second air outlet 31,32 exists poor (being higher than the temperature of the air-flow flowed out from the first air outlet 31 from the temperature of the air-flow of the second air outlet 32 outflow), reduce in the steam entrance cabinet formed outside cabinet. when closing door state, movable valve is opened, and the first blower fan 4 reverses, and heater stops heating, and air is inhaled in entrance circulation air path 11 from first and second air outlet 31,32 and auxiliary air port 5, improves air circulation.
The control method of the present embodiment: close door state, first blower fan 4 is controlled rotates (such as rotating clockwise) toward direction of closing the door, movable valve is opened, heater stops heating, air is made to suck circulation air path 11 from first and second air outlet 31,32 and auxiliary air port 5, then pass through vaporizer 2 and be drained in cabinet from the air inlet 33 of circulation air path 11 again, by continuous circulation so that in cabinet, keep the temperature and humidity of a certain scope; Door opening state, the controlled reversion of first blower fan 4 (rotating counterclockwise), movable valve closing, auxiliary air port 5 is enclosed, air flow direction generation reflux in circulation air path 11, air through air mixing chamber 111 is heated by heater, and air sucks circulation air path 11 from the air inlet 33 of circulation air path 11, discharges from first and second air outlet 31,32 respectively again and be formed about first and second supercool vertically downward air curtain at the cabinet frame of cabinet opening after then passing through vaporizer 2.
Embodiment 6
The freezer structure of the present embodiment is similar to Example 5, and difference is: eliminates the auxiliary air port 5 of air mixing chamber 111 and is arranged in auxiliary air port 5 movable valve. When closing door state, air can only be inhaled in entrance circulation air path 11 from first and second air outlet 31,32.Promoted the air themperature flowing through air mixing chamber 111 by heater so that the thermograde that first and second air outlet 31,32 effluent stream exists is poor, reduce the steam formed outside cabinet and enter in cabinet.
The control method of the present embodiment: close door state, first blower fan 4 is controlled rotates (such as rotating clockwise) toward direction of closing the door, heater stops heating, air is made to suck circulation air path 11 from first and second air outlet 31,32, then pass through vaporizer 2 and be drained in cabinet from the air inlet 33 of circulation air path 11 again, by continuous circulation so that keep the temperature and humidity of a certain scope in cabinet; Door opening state, the controlled reversion of first blower fan 4 (rotating counterclockwise), air flow direction generation reflux in circulation air path 11, air through air mixing chamber 111 is heated by heater, air sucks circulation air path 11 from the air inlet 33 of circulation air path 11, discharges from first and second air outlet 31,32 respectively again and be formed about first and second supercool vertically downward air curtain at the cabinet frame of cabinet opening after then passing through vaporizer 2.
Embodiment 7
The freezer structure of the present embodiment is similar to Example 3, difference is: eliminate the second blower fan 6, air pressure pump is utilized to replace the second blower fan 6, air pressure pump is arranged on the installation site of original second blower fan 6, the outlet of air pressure pump connects with air mixing chamber 111, the inner space of the entrance of air pressure pump and cabinet 1, extracting the higher air of in-cabinet temperature by air pressure pump and enter into air mixing chamber 111, the air relatively low with the temperature that vaporizer 2 directly distributes carries out mixing and realizes temperature and promote.
The control method of the present embodiment is similar to Example 3, replaces the effect of the second blower fan 6 just with air pressure pump.
Obviously, the above embodiment of the present invention is only for clearly demonstrating example of the present invention, and is not the restriction to embodiments of the present invention. For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description. Here without also cannot all of embodiment be given exhaustive. All any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within the protection domain of the claims in the present invention.
Claims (11)
1. a refrigerator, including cabinet (1), it is characterised in that described cabinet (1) is provided with and makes the opening of cabinet (1) form the first air curtain and the air channel structure of the second air curtain, first air curtain is positioned at outside the second air curtain, and the temperature of the second air curtain is higher than the temperature of the first air curtain.
2. refrigerator according to claim 1, it is characterized in that: described air channel structure includes being located at the circulation air path (11) in the wall portion of cabinet (1), it is located at the vaporizer (2) in circulation air path (11) and the first blower fan (4), one end of circulation air path (11) is provided with air inlet (33), the other end of circulation air path (11) is respectively equipped with first, two air outlets (31, 32), first, two air outlets (31, 32) the cabinet arch of the opening of cabinet (1) it is positioned at, and first, two air outlets (31, 32) opening down, first air outlet (31) is positioned at the outside of the second air outlet (32), the air-flow that first air outlet (31) flows out forms the first air curtain, the air-flow that second air outlet (32) flows out forms the second air curtain.
3. refrigerator according to claim 2, it is characterised in that: the air inlet (33) of described circulation air path (11) and the inner space of cabinet (1), the first blower fan (4) is reversible blower fan.
4. refrigerator according to claim 1, it is characterised in that: the operating temperature range in described cabinet (1) is 8 DEG C～20 DEG C, humidity range is 35%～75%.
5. refrigerator according to claim 2, it is characterized in that: between corresponding second air outlet (32) of described circulation air path (11) and vaporizer (2), in the air channel of section, be provided with air mixing chamber (111), air mixing chamber (111) one end connects with circulation air path (11), air mixing chamber (111) other end and the second air outlet (32) connection, air mixing chamber (111) offers auxiliary air port (5), it is provided with the second blower fan (6) in auxiliary air port (5), the outlet of auxiliary air port (5) connects with air mixing chamber (111), the entrance of auxiliary air port (5) and the inner space of cabinet (1).
6. refrigerator according to claim 2, it is characterized in that: between corresponding second air outlet (32) of described circulation air path (11) and vaporizer (2), in the air channel of section, be provided with air mixing chamber (111), air mixing chamber (111) one end connects with circulation air path (11), air mixing chamber (111) other end and the second air outlet (32) connection, air mixing chamber is provided with heater in (111).
7. refrigerator according to claim 6, it is characterised in that: described air mixing chamber (111) offers auxiliary air port (5), is provided with and is provided with movable valve in auxiliary air port (5).
8. refrigerator according to claim 2, it is characterized in that: between corresponding second air outlet (32) of described circulation air path (11) and vaporizer (2), in the air channel of section, be provided with air mixing chamber (111), air mixing chamber (111) one end connects with circulation air path (11), air mixing chamber (111) other end and the second air outlet (32) connection, air mixing chamber (111) offers auxiliary air port (5), it is provided with air pressure pump in auxiliary air port (5), the outlet of air pressure pump connects with air mixing chamber (111), the inner space of the entrance of air pressure pump and cabinet (1).
9. the refrigerator according to any one of claim 2 to 8, it is characterised in that: described first and second air outlet (31,32) is respectively equipped with commutator (7), and the rectification hole (71) of commutator (7) is downward.
10. refrigerator according to claim 9, it is characterized in that: described in be arranged in the commutator (7) of the first air outlet (31) higher than the commutator (7) being arranged in the second air outlet (32), and the rectification hole being arranged in the commutator (7) of the first air outlet (31) is parallel with the rectification hole of the commutator (7) being arranged in the second air outlet (32).
11. the control method of a refrigerator according to claim 3, it is characterised in that described method includes:
Whether detection freezer door body is opened, as detected, freezer door body is closed mode, first blower fan (4) is controlled to be rotated toward direction of closing the door, realize entering circulation air path (11) from first and second air outlet (31,32) air draught, then discharge from the air inlet (33) of circulation air path (11) so that air circulation in cabinet; As detected, freezer door body is open mode, first blower fan (4) is controlled to be rotated backward, realize entering circulation air path (11) from air inlet (33) air draught, then discharge from first and second air outlet (31,32) so that refrigerator opening cabinet frame is formed about double-deck air curtain downwards.
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