Summary of the invention
The present invention is intended to solve at least one of technical problem that exists in the prior art.
Through discovery after inventor's further investigation, food (for example vegetables, fruit) is fresh-keeping to be quite responsive to temperature fluctuation, particularly refrigerates the food fresh keeping of warm area.The temperature fluctuation meeting drives humidity and changes, and the water that is evaporated from food can continue with the form of refrigeration condensation water to run off, thereby causes the fresh-keeping cycle of food to shorten widely.
For this reason, one object of the present invention is to propose a kind of have excellent moisturizing and the refrigerator of fresh keeping property.
To achieve these goals, propose a kind of refrigerator according to embodiments of the invention, described refrigerator comprises: casing is limited with freezing compartment and refrigerator chamber in the described casing; Evaporimeter, described evaporimeter are located in the described freezing compartment; Refrigeration heat exchanger and freezing heat exchanger, it is indoor that described refrigeration heat exchanger is located at described refrigerator, and described freezing heat exchanger is located in the described freezing compartment; The first and second pipelines, described the first and second pipelines are connected in parallel between described refrigeration heat exchanger and the described freezing heat exchanger so that described refrigeration heat exchanger, described freezing heat exchanger, described the first pipeline and the airtight closed circuit of described second pipe formation accommodate refrigerating medium in the described closed circuit; Drive unit, described drive unit are located on the described closed circuit and flow in described closed circuit for driving described refrigerating medium; Temperature Detector, it is indoor that described Temperature Detector is located at described refrigerator; And controller, described controller links to each other in order to control the flow velocity that described drive unit is regulated described refrigerating medium according to the temperature detection value of described Temperature Detector with described drive unit with described Temperature Detector respectively.
According to the refrigerator of the embodiment of the invention by arranging by being located at the indoor described refrigeration heat exchanger of described refrigerator, be located at the described freezing heat exchanger in the described freezing compartment, the described closed circuit that described the first pipeline and described second pipe consist of, and in described closed circuit, accommodate refrigerating medium, thereby can make described refrigerating medium carry out heat exchange in order to make described refrigerating medium accumulate cold by the cold wind in described freezing heat exchanger and the described freezing compartment, refrigerating medium in the described freezing heat exchanger is transported in the described refrigeration heat exchanger by one in described the first pipeline and the described second pipe by described drive unit subsequently, the refrigerating medium that is transported in the described refrigeration heat exchanger carries out heat exchange being freezed in described refrigerator chamber by the indoor air of described refrigeration heat exchanger and described refrigerator, and the interior refrigerating medium of last described refrigeration heat exchanger is transported in the described freezing heat exchanger by in described the first pipeline and the described second pipe another by described drive unit.Repeat said process (as long as open described refrigerator chamber, described drive unit moves always), thereby it is indoor constantly to bring the cold in the described freezing compartment into described refrigerator.Because the air that the refrigerating medium in the described closed circuit is not direct and described refrigerator is indoor exchanges convection current, therefore can not take away by the moisture that described refrigerator is indoor, namely can not reduce the humidity of described refrigerator chamber.
Described refrigerator is by arranging described Temperature Detector and described drive unit, thereby temperature that can be indoor according to described refrigerator (comprising the temperature of the air that described refrigerator is indoor and the surface temperature of described refrigeration heat exchanger) is controlled described drive unit and regulated the flow velocity of described refrigerating medium and enter cold in the described heat exchanger in order to regulate from described freezing compartment.When the indoor temperature of described refrigerator is higher than setting value, described controller can be controlled described drive unit high-speed cruising in order to improve the flow velocity of described refrigerating medium, cold enters in the described refrigeration heat exchanger thereby can make more, can reduce rapidly the indoor temperature of described refrigerator like this.When the indoor temperature of described refrigerator approaches setting value, described controller can reduce the speed of service of described drive unit in order to reduce the flow velocity of described refrigerating medium, thereby can reduce the cold that enters in the described refrigeration heat exchanger, the indoor temperature of described refrigerator is reduced lentamente and reach setting value.After the indoor temperature of described refrigerator reaches setting value, described controller can be with speed of service correction to an equilibrium valve of described drive unit, be transported to the cold that scatters and disappears to the external world in the cold of described refrigerator chamber and described refrigerator chamber and reach balance under described equilibrium valve, the indoor temperature of described refrigerator no longer fluctuates.Moisture in the indoor food (for example vegetables, fruit) of described like this refrigerator can not run off.Therefore described refrigerator has excellent moisturizing and fresh keeping property, can prolong widely the fresh-keeping cycle of food.And the production cost of described refrigerator is well below the frequency conversion refrigerator of ad eundem.
Southern area in China does not often need to open described refrigerator chamber winter.If need to close separately described refrigerator chamber, then only need to close described drive unit and get final product.Because the density of described refrigerating medium is very large, can not form free convection in described closed circuit, therefore can not freeze to described refrigerator chamber.And existing refrigerator need to could realize closing individually described refrigerator chamber by magnetic valve is set.Therefore, described refrigerator not only can reduce production costs, and can reduce power consumption.
In addition, the refrigerator according to the embodiment of the invention can have following additional technical characterictic:
According to one embodiment of present invention, described evaporimeter is a kind of in evaporator fin, wire-tube evaporator, inflation type evaporator and the plate pipe evaporator.
According to one embodiment of present invention, each in described refrigeration heat exchanger and the described freezing heat exchanger is the housing that inside is limited with cavity, and at least a portion of described housing is made of metal.
According to one embodiment of present invention, described the first pipeline and described second pipe are made by heat-barrier material.Can avoid like this producing condensed water on the surface of the indoor part of the described refrigerator of being positioned at of described the first pipeline and described second pipe.
According to one embodiment of present invention, described refrigeration heat exchanger is located at the rear portion of described refrigerator chamber, and described freezing heat exchanger is located at the top of described freezing compartment.Can make like this structure in described refrigerator chamber and the described freezing compartment more reasonable.
According to one embodiment of present invention, the outline of the postnotum of the outline of described refrigeration heat exchanger and described refrigerator chamber is adaptive.Can further increase like this heat exchange area and improve refrigerating efficiency.
According to one embodiment of present invention, described Temperature Detector is located on the outer surface of described refrigeration heat exchanger in order to detect the surface temperature of described refrigeration heat exchanger, and the described drive unit of surface temperature control of the described refrigeration heat exchanger that wherein said controller detects according to described Temperature Detector is regulated the flow velocity of described refrigerating medium.By described Temperature Detector being located on the outer surface of described refrigeration heat exchanger, can detect more sensitively temperature variation.
According to one embodiment of present invention, described drive unit comprises: drive motors, described drive motors link to each other with described controller so that described controller is controlled the rotating speed of described drive motors according to the temperature detection value of described Temperature Detector; Permanent magnetic drive spare, the outer wall of the contiguous described closed circuit of described permanent magnetic drive spare, wherein said permanent magnetic drive spare links to each other with the output shaft of described drive motors in order to rotate under the drive of described drive motors; Rotating shaft, described rotating shaft are rotatably installed on the inwall of described closed circuit; Permanent magnetism driven member, described permanent magnetism driven member are fixed on the described rotating shaft and are relative with described permanent magnetic drive spare in order to rotate under the drive of described permanent magnetic drive spare; And flabellum, described flabellum is fixed on the described rotating shaft.By arrange described permanent magnetic drive spare and described permanent magnetism driven member with the transmission of power of the output shaft of described drive motors to described flabellum, thereby the output shaft that can make described drive motors needn't pass the wall of described closed circuit, and namely the output shaft of described drive motors can not destroy the sealing of described closed circuit in order to avoid described refrigerating medium to leak.
According to one embodiment of present invention, be provided with freezing fan and the indoor refrigeration fan that is provided with of described refrigerator in the described freezing compartment.So not only can accelerate the refrigerating speed of described freezing compartment and described refrigerator chamber, and can be so that the temperature equalization of the indoor position of described freezing compartment and described refrigerator, and accelerate refrigerating medium in the described freezing heat exchanger and the heat transfer rate of the cold wind in the described freezing compartment.
According to one embodiment of present invention, described freezing fan is relative with described freezing heat exchanger.Can further accelerate so the interior refrigerating medium of described freezing heat exchanger and the heat transfer rate of the cold wind in the described freezing compartment.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
The specific embodiment
The below describes embodiments of the invention in detail, and the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " vertically ", " laterally ", " on ", orientation or the position relationship of the indications such as D score, 'fornt', 'back', " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward " be based on orientation shown in the drawings or position relationship, only be for convenience of description the present invention and simplified characterization, rather than indication or the hint device of indication or element must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " only are used for describing purpose, and can not be interpreted as indication or hint relative importance.
In description of the invention, unless otherwise prescribed and limit, need to prove, term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly to link to each other, and also can indirectly link to each other by intermediary, for the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term.
Below with reference to the refrigerator 10 of Fig. 1 description according to the embodiment of the invention.As shown in Figure 1, refrigerator 10 comprises casing 100, evaporimeter 200, refrigeration heat exchanger 300, freezing heat exchanger 400, the first pipeline 500, second pipe 600, drive unit 700, Temperature Detector 800 and controller (not shown).
Be limited with freezing compartment 120 and refrigerator chamber 110 in the casing 100, evaporimeter 200 is located in the freezing compartment 120.Refrigeration heat exchanger 300 is located in the refrigerator chamber 110, and freezing heat exchanger 400 is located in the freezing compartment 120.The first pipeline 500 and second pipe 600 are connected in parallel between refrigeration heat exchanger 300 and the freezing heat exchanger 400 so that refrigeration heat exchanger 300, freezing heat exchanger 400, the first pipeline 500 and the airtight closed circuit of second pipe 600 formations accommodate refrigerating medium in the described closed circuit.Drive unit 700 is located on the described closed circuit and flows in described closed circuit for driving described refrigerating medium.Temperature Detector 800 is located in the refrigerator chamber 110.Described controller links to each other with drive unit 700 with Temperature Detector 800 respectively in order to regulate the flow velocity of described refrigerating medium according to the temperature detection value accessory drive 700 of Temperature Detector 800.
According to the refrigerator 10 of the embodiment of the invention by arranging by the refrigeration heat exchanger 300 that is located in the refrigerator chamber 110, be located at the freezing heat exchanger 400 in the freezing compartment 120, the described closed circuit that the first pipeline 500 and second pipe 600 consist of, and in described closed circuit, accommodate refrigerating medium, thereby can make described refrigerating medium carry out heat exchange in order to make described refrigerating medium accumulate cold by the cold wind in freezing heat exchanger 400 and the freezing compartment 120, refrigerating medium driven device 700 in the freezing heat exchanger 400 is transported in the refrigeration heat exchanger 300 by one in the first pipeline 500 and the second pipe 600 subsequently, the refrigerating mediums that are transported in the refrigeration heat exchanger 300 carry out heat exchange being freezed in refrigerator chamber 110 by refrigeration heat exchanger 300 and air in the refrigerator chamber 110, and the refrigerating medium driven device 700 that refrigerates at last in the heat exchanger 300 is transported in the freezing heat exchanger 400 by in the first pipeline 500 and the second pipe 600 another.Repeat said process (as long as open refrigerator chamber 110, drive unit 700 moves always), thereby can constantly the cold in the freezing compartment 120 be brought in the refrigerator chamber 110.Since the refrigerating medium in the described closed circuit directly with refrigerator chamber 110 in air exchange convection current, therefore refrigerator chamber 110 interior moisture can not taken away, namely can not reduce the humidity of refrigerator chamber 110.
Refrigerator 10 is by set temperature detector 800 and drive unit 700, enters cold in the heat exchanger 300 thereby can come accessory drive 700 to regulate the flow velocity of described refrigerating medium according to the temperature in the refrigerator chamber 110 (comprising the temperature of the air in the refrigerator chamber 110 and the surface temperature of refrigeration heat exchanger 300) in order to regulate from freezing compartment 120.When the temperature in the refrigerator chamber 110 is higher than setting value, described controller can accessory drive 700 high-speed cruisings in order to improve the flow velocity of described refrigerating medium, cold enters in the refrigeration heat exchanger 300 thereby can make more, can reduce rapidly like this temperature in the refrigerator chamber 110.When the temperature in the refrigerator chamber 110 approaches setting value, described controller can reduce the speed of service of drive unit 700 in order to reduce the flow velocity of described refrigerating medium, thereby can reduce the cold that enters in the refrigeration heat exchanger 300, temperature in the refrigerator chamber 110 are reduced lentamente and reach setting value.After the temperature in the refrigerator chamber 110 reaches setting value, described controller can be with speed of service correction to an equilibrium valve of drive unit 700, be transported to the cold that scatters and disappears to the external world in the cold of refrigerator chamber 110 and refrigerator chamber 110 and reach balance under described equilibrium valve, the temperature in the refrigerator chamber 110 no longer fluctuate.Moisture in the food (for example vegetables, fruit) in the refrigerator chamber 110 can not run off like this.Therefore refrigerator 10 has excellent moisturizing and fresh keeping property, can prolong widely the fresh-keeping cycle of food.And the production cost of refrigerator 10 is well below the frequency conversion refrigerator of ad eundem.
Southern area in China does not often need to open refrigerator chamber 110 winter.If need to close separately refrigerator chamber 110, then only need to close drive unit 700 and get final product.Because the density of described refrigerating medium is very large, can not form free convection in described closed circuit, therefore can not freeze to refrigerator chamber 110.And existing refrigerator need to could realize closing individually refrigerator chamber 110 by magnetic valve is set.Therefore, refrigerator 10 not only can reduce production costs, and can reduce power consumption.
As depicted in figs. 1 and 2, in some embodiments of the invention, refrigeration heat exchanger 300 can be the housing that inside is limited with cavity 310, and at least a portion of described housing can be made of so that the air in the refrigerating medium in the cavity 310 and the refrigerator chamber 110 carries out heat exchange metal (for example aluminium).Particularly, the front surface of described housing (namely refrigerating the front surface of heat exchanger 300) can be made by the material with high heat conductance (for example aluminium), and the front surface of wherein said housing refers to the close user's of described housing surface.Advantageously, whole described housing can be made by the material with high heat conductance (for example aluminium), can increase widely like this heat exchange area and improve refrigerating efficiency.
Particularly, freezing heat exchanger 400 also can be the housing that inside is limited with cavity 410, and at least a portion of described housing can be made of so that the cold wind in the refrigerating medium in the cavity 410 and the freezing compartment 120 carries out heat exchange metal (for example aluminium).Particularly, the front surface of described housing (being the front surface of freezing heat exchanger 400) can be made by the material with high heat conductance (for example aluminium), and the front surface of wherein said housing refers to the close user's of described housing surface.Advantageously, whole described housing can be made by the material with high heat conductance (for example aluminium), can increase widely like this heat exchange area and improve refrigerating efficiency.
As depicted in figs. 1 and 2, in one embodiment of the invention, refrigeration heat exchanger 300 can be located at the rear portion in the refrigerator chamber 110.In other words, refrigeration heat exchanger 300 can be close to the postnotum of refrigerator chamber 110, can make like this internal structure of refrigerator chamber 110 more reasonable, and make refrigerator chamber 110 have larger spatial accommodation.Wherein, the rear surface of refrigeration heat exchanger 300 can be close to the postnotum of refrigerator chamber 110, also can be close on the postnotum of refrigerator chamber 110.The rear surface of refrigeration heat exchanger 300 refers to refrigerate the surface away from the user of heat exchanger 300.
Particularly, freezing heat exchanger 400 can be located at the top of freezing compartment 120.In other words, freezing heat exchanger 400 can be close to the top board of freezing compartment 120, can make like this internal structure of freezing compartment 120 more reasonable, and makes freezing compartment 120 have larger spatial accommodation.Wherein, the upper surface of freezing heat exchanger 400 can be close to the top board of freezing compartment 120, also can be close on the top board of freezing compartment 120.
In a concrete example of the present invention, refrigeration heat exchanger 300 can be tabular, and the outline of refrigeration heat exchanger 300 can be adaptive with the outline of the postnotum of refrigerator chamber 110.In other words, the top of refrigeration heat exchanger 300 can be close to the top of refrigerator chamber 110, the bottom of refrigeration heat exchanger 300 can be close to the bottom of refrigerator chamber 110, the left end of refrigeration heat exchanger 300 can be close to the left end of refrigerator chamber 110, and the right-hand member of refrigeration heat exchanger 300 can be close to the right-hand member of refrigerator chamber 110.Can further increase like this heat exchange area and improve refrigerating efficiency.Wherein, left and right directions refer to Fig. 1 and Fig. 2 in the direction of section quadrature of refrigerator 10.
As depicted in figs. 1 and 2, in examples more of the present invention, the first pipeline 500 and second pipe 600 can be tubuloses.Particularly, the first pipeline 500 and second pipe 600 can be made by heat-barrier material.Because the first pipeline 500 and second pipe 600 can be tubuloses, therefore the first pipeline 500 and second pipe 600 are interior has concentrated a large amount of described refrigerating mediums, can produce condensed water on the surface of the part that is positioned at refrigerator chamber 110 of such the first pipeline 500 and second pipe 600, thereby cause the humidity in the refrigerator chamber 110 to reduce.By utilizing heat-barrier material to make the first pipeline 500 and second pipe 600, can avoid producing condensed water on the surface of the part that is positioned at refrigerator chamber 110 of the first pipeline 500 and second pipe 600.
Particularly, the two ends of the first pipeline 500 can be communicated with an end of refrigeration heat exchanger 300 and an end of freezing heat exchanger 400 respectively, and the two ends of second pipe 600 can be communicated with the other end of refrigeration heat exchanger 300 and the other end of freezing heat exchanger 400 respectively.Advantageously, can utilize sealant tape that the first pipeline 500 is sealed with the junction of refrigeration heat exchanger 300 and freezing heat exchanger 400 and to the junction of second pipe 600 with refrigeration heat exchanger 300 and freezing heat exchanger 400, thereby can avoid described refrigerating medium to leak.
As shown in Figure 2, Temperature Detector 800 can be located at refrigerator chamber 110 interior temperature for detection of the air in the refrigerator chamber 110.As shown in Figure 1, in examples more of the present invention, Temperature Detector 800 can be located on the outer surface of refrigeration heat exchanger 300 in order to detect the surface temperature of refrigeration heat exchanger 300, and the surface temperature control drive unit 700 of the refrigeration heat exchanger 300 that wherein said controller can detect according to Temperature Detector 800 is regulated the flow velocity of described refrigerating medium.On the outer surface that Temperature Detector 800 is located at refrigeration heat exchanger 300, can detect more sensitively temperature variation.Consider between the temperature of the air that surface temperature and the refrigerator chamber 110 of refrigeration heat exchanger 300 is interior to have certain temperature difference, can in control program, provide compensation.For example when the surface temperature of refrigeration heat-transfer surface 300 for-1 when spending, the temperature of the air in the refrigerator chamber 110 is 2 degree.This moment Temperature Detector 800 detect refrigeration heat exchanger 300 surface temperature for-1 the degree after, again the heap add 3 the degree as compensation so that the surface temperature of the refrigeration heat exchanger 300 that Temperature Detector 800 detects also be 2 the degree.When the user set refrigerated storage temperature and is 2 degree (i.e. setting value be 2 degree), the temperature of the air in the refrigerator chamber 110 was just near 2 degree like this.
Particularly, Temperature Detector 700 can be temperature sensor.
In some embodiments of the invention, as shown in Figure 3 (Fig. 3 shows the structure of drive unit 700), drive unit 700 can comprise drive motors 710, permanent magnetic drive spare 720, rotating shaft 730, permanent magnetism driven member 740 and flabellum 750.Drive motors 710 can link to each other with described controller so that described controller can be controlled according to the temperature detection value of Temperature Detector 800 rotating speed of drive motors 710.Permanent magnetic drive spare 720 can be close to the outer wall of described closed circuit, and wherein permanent magnetic drive spare 720 can link to each other in order to rotate under the drive of drive motors 710 with the output shaft 711 of drive motors 710.Rotating shaft 730 can be rotatably installed on the inwall of described closed circuit.Permanent magnetism driven member 740 can be fixed on the rotating shaft 730, and permanent magnetism driven member 740 can be relative in order to rotate under the drive of permanent magnetic drive spare 720 with permanent magnetic drive spare 720.Flabellum 750 can be fixed on the rotating shaft 730.Wherein, rotating shaft 730 can be rotatably installed on one the inwall that refrigerates in heat exchanger 300, freezing heat exchanger 400, the first pipeline 500 and the second pipe 600.Advantageously, rotating shaft 730 can be rotatably installed on one the inwall in the first pipeline 500 and the second pipe 600, and permanent magnetic drive spare 720 can be close to one outer wall in the first pipeline 500 and the second pipe 600.
As long as open refrigerator chamber 110, drive unit 700 is in running status always.Particularly, the output shaft 711 of drive motors 710 can drive 720 rotations of permanent magnetic drive spare, permanent magnetic drive spare 720 can drive 740 rotations of permanent magnetism driven member under the effect in magnetic field, and then permanent magnetism driven member 740 can drive flabellum 750 rotations so that the described refrigerating medium of flabellum 750 drives flows by rotating shaft 730 in described closed circuit.Wherein, can regulate by the rotating speed of regulating drive motors 710 flow velocity of described refrigerating medium, the rotating speed that improves drive motors 710 can increase the flow velocity of described refrigerating medium, and the rotating speed that reduces drive motors 710 can reduce the flow velocity of described refrigerating medium.
By arrange permanent magnetic drive spare 720 and permanent magnetism driven member 740 with the transmission of power of the output shaft 711 of drive motors 710 to flabellum 750, thereby the output shaft 711 that can make drive motors 710 needn't pass the wall of described closed circuit, and namely the output shaft 711 of drive motors 710 can not destroy the sealing of described closed circuit in order to avoid described refrigerating medium to leak.Particularly, drive motors 710 can be direct current generator, can regulate by the mode of regulation voltage, electric current output shaft 711 rotating speeds of drive motors 710.Drive motors 710 can also be stepper motor, can regulate according to the pulse signal that described controller provides the rotating speed of the output shaft 711 of drive motors 710.
In some embodiments of the invention, freezing compartment 120 is interior can be provided with freezing fan 121, and refrigerator chamber 110 is interior can be provided with refrigeration fan 111.By freezing fan 121 being set freezing compartment 120 is interior, not only can accelerate the refrigerating speed of freezing compartment 120 so that the temperature equalization of the position in the freezing compartment 120, and can accelerate the heat transfer rate of the interior cold wind of refrigerating medium and freezing compartment 120 in the freezing heat exchanger 400.By the 110 interior refrigeration fans 111 that arrange in the refrigerator chamber, not only can accelerate the refrigerating speed of refrigerator chamber 110, and can be so that the temperature equalization of the position in the refrigerator chamber 110.Advantageously, freezing fan 121 can be relative in order to will more be transported to the surface of freezing heat exchanger 400 through the cold wind of evaporimeter 200 coolings with freezing heat exchanger 400, can further accelerate like this heat transfer rate of the interior cold wind of refrigerating medium and freezing compartment 120 in the freezing heat exchanger 400.
Particularly, freezing fan 121 can be two, one of them freezing fan 121 is used for being transported to through the part of the cold wind of evaporimeter 200 coolings the surface of freezing heat exchanger 400, and another freezing fan 121 is used for driving another part of the cold wind that cools off through evaporimeter 200 in freezing compartment's 120 interior circulations.
Freezing fan 121 and refrigeration fan 111 can often turn with predetermined rotating speed, also can rotate off and on predetermined rotating speed, can also speed change rotate.
In one embodiment of the invention, evaporimeter 200 can be any known evaporimeter.For example, evaporimeter 200 can be a kind of in evaporator fin, wire-tube evaporator, inflation type evaporator and the plate pipe evaporator.
Described refrigerating medium ceaselessly flows in described closed circuit, thereby the cold in the freezing compartment 120 can be brought in the refrigerator chamber 110 continuously.Described refrigerating medium can be liquid, also can be gas.Advantageously, described refrigerating medium can not solidify about subzero 30 degree, and can have mobile preferably.For example, described refrigerating medium can be aqueous metal salt.
It will be appreciated by persons skilled in the art that refrigerator 10 can also comprise a body, described door body can be known, therefore no longer describes in detail.
Refrigerator 10 according to the embodiment of the invention has excellent moisturizing and fresh keeping property.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or the example in conjunction with specific features, structure, material or the characteristics of this embodiment or example description.In this manual, the schematic statement of above-mentioned term not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or characteristics can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: in the situation that do not break away from principle of the present invention and aim can be carried out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited by claim and equivalent thereof.