CN1482427A - Refrigerator - Google Patents

Abstract

This refrigerator is provided with a refrigerated storage space (10), a refrigerated storage space (5), and a decompressed storage space (9) cooled by a cold air flow independent of the other storage spaces. This refrigerator is characterized in that a hermetically sealable storage vessel (19) is disposed in the storage space to enable the indirect cooling by direct cooling or hermetical sealing and, when the vessel is made into the hermetical space, the air inside the space is exhausted to be tuned into the decompressed state. To provide a refrigerator having a storage chamber of a low oxygen atmosphere controlling the atmosphere in a refrigerator by CA (control of the atmosphere) and preserving foods for a long period free from maintenance.

Description

Refrigerator

Technical field

The present invention relates to refrigerator, particularly relate to refrigerator with pressure-reducing chamber that long-life food prod uses.

Background technology

In recent years, refrigerator is not only to the variation of cold storage temperature but also also more and more surging to the care of the consideration of environment and economy aspect, under this background, its trend is that the long preservation and the province thereof that pay attention to the original purpose function instant food of refrigerator more can change.

In general, even with food preservation in refrigerator, also common have because of long deterioration of holding time etc. food is abandoned wasting phenomenon, in order to remain the fresh of food material, the wasting phenomenon that causes is abandoned in elimination, requires to have the function that can keep the original taste of raw-food material, nutritional labeling and freshness for a long time when preserving food.

One of reason of food deterioration is dry and oxidation etc.For drying, effective method is to be kept under the condition that temperature change is little and humidity is high, evaporating temperature by the special-purpose cooler that is provided with of the temperature province that makes each chamber rises and reduces difference with indoor air temperature, does one's utmost to reduce frost to the adhering to of cooler, to prevent drying.For vegetables, can be that ethylene gas improves freshness and keeps by the aging hormone of removing fresh fruit preventing in dry.

Again, aspect anti-oxidation, known can be that CA (control of ControlledAtmosphere atmospheric atmosphere) preserves by the control air atmosphere.Exist about 20% oxygen in the air, this oxygen is one of the reason of food deterioration that comprises the grease partial oxidation of fish and meat.For this reason, by the effect of with CA food and oxygen being interdicted, having the respiration of restraining vegetables, the activate of restraining microorganism and ferment and restraining oxidations such as grease, can improve freshness thus and preserve.

Aspect food and oxygen blocking, general family takes straightforward procedure that food is put into that the bag that fastener is housed packs or the airtight container box of packing into reduces pressure etc., but each operation trouble such as inclosure.When packaging fruit etc., need enclose the adsorbent that absorbs oxygen, to prevent deterioration, though have effect because of being in the air-tight state that does not open and close in this occasion with food, but when open state uses in refrigerator, time one is long, and adsorbent will be saturated, can not adapt to practical long preservation.

In view of the above-mentioned problems, the objective of the invention is to, provide a kind of have by CA control the hypoxemia atmosphere of the air atmosphere in the refrigerator receiving room, can safeguard the refrigerator of ground long-life food prod.

Summary of the invention

In order to solve above-mentioned problem, the refrigerator of the present invention's the 1st technical scheme, it is characterized in that, the decompression storage space that is provided with the space that keeps in cold storage, refrigeration storage space and cools off with cold airflow independently with these storage spaces, and, the sealable accommodating container of configuration in described storage space can be realized can carrying out exhaust to the air of interior volume during as confined space and forming decompression state by the direct cooling of cold air inflow or by airtight indirect cooling.

Adopt this structure, owing to can the stock that be accommodated in the decompression storage space be cooled off, simultaneously by reduce to reduce pressure the oxygen concentration in the atmosphere of the decompression in the accommodating container, therefore, can be with the food and the oxygen blocking of taking in the preservation, have the respiration of restraining vegetables, the effect of restraining oxidation, supression enzyme activity and the activities of supression aerobic microorganism such as grease, the freshness that stock is taken in maintenance, but long preservation.

The refrigerator of the present invention's the 2nd technical scheme is characterized in that, uses the lid that is installed on decompression storage space top that the top opening of accommodating container is airtight, and the steam vent of decompressor is set on this lid.

The refrigerator of the present invention's the 3rd technical scheme, it is characterized in that, lid can with the decompression storage space the peristome setting the door switching move up and down accordingly, adopt these structures, when door is pulled out, because staying in the storeroom, lid only accommodating container is drawn out to outside the casing, therefore, what be convenient to that the user carries out food takes in the taking-up operation, the processing of being convenient to the cleaning of container again and cleaning etc.

The refrigerator of the present invention's the 4th technical scheme, it is characterized in that, when the special-purpose door of the storage space that will reduce pressure is closed, refrigerating gas is imported in the accommodating container, and after the fixed temperature container is decompressed to institute's level pressure power being cooled to, because the food in the accommodating container reduces pressure after the fixed temperature being cooled to, therefore can cool off fast, and can be in the medium-term and long-term preservation of hypoxemia atmosphere.

The refrigerator of the present invention's the 5th technical scheme, it is characterized in that, use be arranged at the outer vavuum pump of casing and with the blast pipe of its binding, the pressure in the accommodating container is decompressed to institute's definite value between 50～200Torr, when the pressure in the accommodating container arrives institute's definite value, stop the driving of vavuum pump.

When being decompressed to 200Torr in the accommodating container when following, oxygen concentration under the atmospheric pressure is below 10%, can restrain the oxidation process of food and the respiration of fresh fruit effectively, if be in below the 50Torr, then stopping air attracting, even in the occasion of taking in sealing bags such as thermosealed distillation food mistakenly, bad phenomenon such as also can prevent to break.Again, in case the pressure in the accommodating container is in the scope of institute's definite value, then the driving of vavuum pump stops, so can reduce the driving time of pump, can restrain energy consumption.

The refrigerator of the present invention's the 6th technical scheme is characterized in that, the storage space that will reduce pressure is opened the bleed outlet of accommodating container and the formation atmospheric pressure with the work that starts of special-purpose door linkedly as the switchable chamber of temperature, can be easily with opening the door that accommodating container is open.

In sum, adopt the present invention, owing to can carry out the cooling of direct or indirect property to the stock that is accommodated in the decompression storage space, and, decompression result in the accommodating container can be with the food of taking in for the oxygen concentration in the atmosphere that reduces to reduce pressure in the preservation and oxygen blocking, the effect that has the respiration of restraining vegetables, restrains oxidation such as grease, restrains enzyme activity and restrain the microbial activities of liking gaseousnesses, the freshness that stock is taken in maintenance, but long preservation.

The simple declaration of accompanying drawing

Fig. 1 is the longitudinal section of the refrigerator of expression the present invention the 1st embodiment.

Fig. 2 is the front section view of the support of the decompression storage space in the presentation graphs 1.

Fig. 3 is the amplification longitudinal section of wanting portion of the decompression storage space of presentation graphs 1.

Fig. 4 pulls out the longitudinal section of state for the accommodating container of presentation graphs 3.

Fig. 5 is expression another embodiment of the present invention and cutaway view Fig. 3 same section.

Fig. 6 is the general profile chart of another cover body opening/closing mechanism of expression the present invention embodiment.

Fig. 7 is the cutaway view of the open state of opening above the accommodating container in the presentation graphs 6.

Fig. 8 is the general profile chart of expression another cover body opening/closing mechanism embodiment of the present invention.

The specific embodiment

The 1st embodiment of the present invention is described with reference to the accompanying drawings.Fig. 1 is the longitudinal section of expression refrigerator of the present invention, disposes the outer container 2 and the square interior case 4 that is separated with heat-barrier material 3 that form refrigerator body 1 shell within it.

Topmost at the interior case 4 that forms the storage space internal face disposes refrigerating chamber 5, thereunder is provided with vegetable compartment 6 by dividing plate 7, and this vegetable compartment 6 keeps the high humility state with the temperature that is higher than refrigerating chamber 5 slightly.Be divided into temperature by thermal wall 8 shape ground arranged side by side left and right regions and switch chamber 9 and not shown ice making storage chamber below vegetable compartment 6, foot separate configurations refrigerating chamber 10 is provided with the special-purpose separately shutter door of closing in the front openings portion of each storeroom.

Each storeroom by be arranged at refrigerating space, reefer space separately the refrigeration at the back side with cooler 11, freezingly carry out circulating cold air with cooler 12, the fan 13,14 and the pipeline that are arranged at each cooler next door, each storeroom cooling is controlled to design temperature.

Be formed with the space of Machine Room 15 in the lower backside of the reefer space that is disposed at refrigerator body 1 foot, be provided with to described refrigeration with and the compressor 16 of freezing usefulness cooler 11,12 the supply system cryogens.

In said structure, in switching chamber 9, described temperature is provided with the container 19 of taking in foodstuff storing, and Fig. 2 switches the sectional view in chamber portion left side for temperature.As shown in the figure, the inner face side of switching chamber door 20 in temperature is installed with the pair of right and left bearing support 21 that depth direction extends, and described accommodating container 19 mountings are remained between this bearing support 21, can freely pull out outside casing with door 20.

The ora terminalis up and down of pair of right and left bearing support 21 is formed with the L word shape 21a of portion, 21b, by near the L word shape 21b of the portion supporting of the pulley 22 of the sidewall the front openings portion that is arranged at refrigerator body 1 with the lower end, thus, can be free to slide on the guide rail 23 that bearing support 21 forms in interior case 4 two sides, the flange 19a that container 19 top peripheries form be supported by the L word shape 21a of portion of upper end.

Fixing the pulley 24 that can in left and right rail 23, slide in left and right sides bearing support 21 rear end foreign side separately, it is being positioned in by temperature switches in the inner face of chamber door 20 and the framework that left and right sides bearing support 21 forms, can be stably with accommodating container 19 maintenances.

Opening part disposes the lid 25 that can fully opening be covered on described accommodating container 19.Utilization is installed on the extension spring 26 on several positions of indoor top surface, normally utilizes spring 26 application of force upward, lid 25 is hung as the state that is separated with the gap with respect to the opening of container 19.

Periphery is being fixed the cyclic sealing gasket 27 that is formed by silicon rubber etc. below the lid 25 corresponding with the flange 19a top of container, in structure described later, when lid 25 covered the opening of container 19, the top butt of sealing gasket 27 and flange 19a seamlessly will seal in the container.

Fig. 3 for temperature switch 9 ones of chambers close a state want portion's cutaway view.As shown in the figure, be provided with cover body opening/closing mechanism 28 in the place ahead, top of described lid 25.Cover body opening/closing mechanism 28 is made of clava, one end engages with the upper support that temperature is switched chamber door 20, the other end reverses up and down and extends to the indoor freely, front end is provided with the lid pushing 28a of portion, during the shutter door action, by be arranged at temperature and switch the engaging of the guider with claval open-work 29a 29 at top of the indoor front on door 20 next doors, chamber and move, the 28a of pushing portion of the other end is moved up and down.

As shown in Figure 4, when opening the door, cover body opening/closing mechanism 28 is pulled out outside casing with door 20, by engaging with the open-work 29a of guide, the 28a of pushing portion of the other end is moved upward along shown in the arrow, lid 25, is opened the opening above the container 19 so utilize the reset force of spring 26 to be moved upward because of having removed pushing force downwards.Adopt this structure, when temperature being switched chamber door 20 and forwards pull out, lid 25 stays within, and just container 19 is pulled out outside casing under the state of opening in the above.

When closing the indoor depth direction of an action and move to accommodating container 19, by engaging with guider 29, the other end of cover body opening/closing mechanism 28 is along with to moving of depth direction and towards the below, make the front end pushing 28a of portion produce the effect that pushes above the lid 25, the opening of accommodating container 19 is closed, closing under the state, will seal fully in the accommodating container 19 by described sealing gasket 27.

And, being provided with the blast pipe 31 that the pliability material by withstand voltage structure constitutes at the rear portion of lid 25, the one end is inserted logical lid and opening becomes to be positioned at container 19, and the other end extends to the below and is connected with vavuum pump 30.

Compressor 16 adjacency in vavuum pump 30 and the Machine Room 15, the necessity that decompression is preserved according to food drives by manual or automaticity operation indication, during driving, close behind the door institute and begin driving after fixing time switching chamber door 20 through excess temperature, by driving the air in the closed container 19, make decompression in the container via blast pipe 31 sucking-offs.The purpose of this vavuum pump 30 is to preserve food, from the angle of maintaining, preferably uses no oil type.

Pressure variation during accommodating container 19 decompressions is decided by the pull up time of vavuum pump 30 and the opening degree of blast pipe 31.Institute's definite value of present embodiment is set at 50～200Torr.Promptly, if the pressure in the accommodating container is lower than 200Torr, then can be in normal pressure be below 10% of amount of oxygen under the atmospheric pressure to the amount of oxygen in the container, so can restrain the oxygen process of food and the respiration of fresh fruit effectively, and the described container 19 of airtight construction and lid 25 have also used the withstand voltage structure that matches with decompression power.

On the other hand, pressure in the container is set in more than the 50Torr, is in order to prevent following bad phenomenon, promptly, when mistakenly sealing bags such as thermosealed distillation food being taken in, in case pressure is lower than 50Torr, then might break because of decompression makes packed food.

Again, when the pressure in the accommodating container 19 are in the scope of described institute definite value, then be controlled to vavuum pump 30 and drive the state that stops, simultaneously, taking in or taking out along with the food in the accommodating container 19 and making container inner pressure be higher than the occasion of 200Torr, by driving vavuum pump 30 again, attract air to reduce pressure, its pressure is in below the 200Torr.By this running control, can shorten driving time greatly for the vavuum pump 30 of the food preservation environment of realizing low oxygen concentration, can restrain energy consumption.

The following describes the action of said structure.When common refrigerator cooling running, the door of each storeroom is closed, refrigeration with and freezing cold air with cooler 11,12 generations in each storeroom, circulate by pipeline by cooling fan 13,14 its cooling.

It is cells that temperature is switched chamber 9, can-20 ℃ cryogenic temperature to cooling, refrigeration, vegetables storage temperature and+carry out the switching of multiple design temperature in about 8 ℃ the grape wine storage temperature range, by the guidance panel 35 of operation setting in refrigerating-chamber door 34 surfaces, to import from freezing cold air by air-lock control, will be arranged at food cooling preservation in the indoor accommodating container 19 at required design temperature with cooler 12.

Thus, when temperature being switched the common cooling preservation of chamber 9 preserving and switch the chamber, under the state of lid 25 being opened always in that vavuum pump 30 is driven, cold air imported make its circulation in the container 19 and cool off as reducing pressure.Again, also available lid 25 is closed opening, is used to cool off under the indirect cooling around the container 19 is keeping the state of high humility.

Temperature is being switched the occasion that the specification setting is carried out as the decompression storeroom in chamber 9, the top opening of indoor accommodating container 19 is airtight by lid 25, utilization is attracted to make in the container 19 to become decompression state by the air from blast pipe 31 of the driving of vavuum pump 30, under the low oxygen concentration condition between 50～200Torr, have the oxidation and the respiratory effect of supression fresh fruit that prevent to oppress lubricant component, to reach the long preservation of food.

Under this state, pull out when opening the door when temperature being switched chamber door 20, along with pulling out to door 20 the place aheads, cover body opening/closing mechanism 28 is also derived outside casing, and the result is that lid pushing force downwards disappears, so can utilize the power of spring 26 up lid 25 to be opened, the inside of container 19 reverts to atmospheric pressure, simultaneously, owing to only container 19 is drawn out to outside the casing under the state of opening, can carry out taking in taking-up and need not to utilize decompression to make the trouble of container top open operation of food in the above.Again, container 19 also can take off from door 20 and bearing support 21, so be convenient to carry out the cleaning of container and clean.

Food is taken in and is taken out after the end of job once more at closing time, the front end of the barred body shape of cover body opening/closing mechanism 28 is along with the action of closing the door is moved to the cabinet depth direction, simultaneously by engaging with guider 29 towards the below, the front end pushing 28a of portion overcomes the trying hard to recommend the top of gland body 25 of spring 26 and with the opening hermetically closing of accommodating container 19, reduce pressure by the inner air that drives vavuum pump 30 attraction containers 19 simultaneously, stop when deciding force value attracting action and keeping when being decompressed to.

At this moment, accommodating container 19 is air-tight states, carries out the cooling of indirect property around container, if the material of container is formed by the good heat transfer material of the rigidity steel plate with anti-decompression etc., then can keep under original high humility state, utilize cooling indirectly well the food of inside to be cooled off.

Below another embodiment of the present invention is described.In the above-described embodiments, action by cover body opening/closing mechanism 28 and guider 29, the action of opening the door of switching chamber door 20 with temperature is open with the lid 25 of accommodating container linkedly, revert to atmospheric pressure thus, but in the present embodiment, as indicating the shown in Figure 5 of prosign in part same as the previously described embodiments, the handle 33 that temperature is switched the leading-out exit 20 of chamber 9 has adopted the structure of reversing and can easily open the door of utilizing leverage, utilize reversing of handle, by making bleeder valve 35 interlocks that are arranged at intercommunicating pore 34 openings lid 25 and the outside, opening the door of handle 33 moved as signal, can be side by side that the intercommunicating pore 34 of lid is open by bleeder valve 35, utilize the action in a flash in the container 19 to revert to atmospheric pressure apace.Adopt this structure, when opening the door, can make and place atmospheric pressure in the accommodating container 19 apace, can be easily that lid 25 is open.

In addition, also electromagnetic type relief valve (not shown) can be installed on the lid 25 of container in advance certainly, by pressing the hand switch of being located at leading-out exit 20 surfaces that valve is open, make it restore to atmospheric pressure.

In the above-described embodiments, the airtight of accommodating container 19 is to be undertaken by the lid 25 that is arranged at top opening, and returning to atmospheric pressure then is to be undertaken by the intercommunicating pore 34 that is arranged on the lid, but the setting on lid does not limit to intercommunicating pore.Also can be with leading-out exit 20 and accommodating container 19 driving fits, surface at door 20 forms intercommunicating pore, but in order to prevent that the temperature that the action of releasing because of mistake causes the casing outer air of normal temperature to invade to make food in the accommodating container from rising, preferably in temperature is switched chamber 9, form the intercommunicating pore of the usefulness of releasing, import cold air to inside during opening.

Again, in the above-described embodiments, cover body opening/closing mechanism 28 and temperature are switched the switching interlock of chamber door 20, but as shown in Figure 6, can be not and the switching interlock of door yet, but at the top of lid 45 configuration magnetic valve 40, the switching that utilization is formed by not shown door switch signal etc. to 45 pairs of containers 38 of relation control lid of the energising of magnetic valve 40 and spring 46, fixed time for example 30 minutes in the institute that closes behind the door, the opening of container 39 is placed open state, import cold air to container, after food being cooled to institute's fixed temperature, as shown in Figure 7, can utilize the power of stretching out by the actuating strut that energising produced 41 of magnetic valve 40, the elastic force that overcomes extension spring 46 pushes lid 45 upward, and the opening of container 39 is airtight, drive vavuum pump 30 then, will be decompressed to for example 100Torr of institute's level pressure power in the container.

And lid except said structure, as shown in Figure 8, also can move up and down lid 45 by being moved by motor-driven pinion 47 and engaging of tooth bar 48 to the switching of accommodating container, the top opening of open or closing containers 39.

Like this, food in the accommodating container 39 is because of reducing pressure after the fixed temperature being cooled to, so the heat conduction that can not occur causing because of the indirect cooling under the decompression state worsens the bad phenomenon of damaging cooling effect, can preserve more for prolonged period of time in the hypoxemia atmosphere.

In addition, the foregoing description has illustrated the example that the decompression storeroom is set in temperature is switched chamber 9, but is not limited to this, also applicable to forming independently interval chamber in the storeroom that waits other in 1 zone of the part of refrigerating chamber 5 and refrigerating chamber 10.

Claims (6)

1. refrigerator, it is characterized in that, the decompression storage space that is provided with the space that keeps in cold storage, refrigeration storage space and cools off with cold airflow independently with these storage spaces, and, the sealable accommodating container of configuration in described storage space, can realize to carry out exhaust to the air of interior volume during confined space and forming decompression state by the direct cooling of cold air inflow or by airtight indirect cooling.

2. refrigerator as claimed in claim 1 is characterized in that, uses the lid that is installed on decompression storage space top that the top opening of accommodating container is airtight, and the steam vent of decompressor is set on described lid.

3. refrigerator as claimed in claim 2 is characterized in that, described lid moves up and down accordingly with the switching of the door of the peristome setting of decompression storage space.

4. as each described refrigerator of claim 1 to 3, it is characterized in that, when the special-purpose door of the storage space that will reduce pressure is closed, refrigerating gas is imported in the accommodating container, and after the fixed temperature container is decompressed to institute's level pressure power being cooled to.

5. as each described refrigerator of claim 1 to 3, it is characterized in that, use be arranged at the outer vavuum pump of casing and and the blast pipe of its binding the pressure in the accommodating container is decompressed to institute's definite value between 50～200Torr, when the pressure in the accommodating container arrives institute's definite value, stop the driving of vavuum pump.

6. as each described refrigerator of claim 1 to 3, it is characterized in that, described decompression storage space as the switchable chamber of temperature, is opened the bleed outlet of accommodating container and the formation atmospheric pressure linkedly with the work that starts of special-purpose door.

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