CN1412509A

CN1412509A - Refrigerator

Info

Publication number: CN1412509A
Application number: CN02147337.4A
Authority: CN
Inventors: 天明稔; 塚本惠造; 合野一彰
Original assignee: Toshiba Corp
Current assignee: Toshiba Corp
Priority date: 2001-10-12
Filing date: 2002-10-14
Publication date: 2003-04-23
Anticipated expiration: 2022-10-14
Also published as: CN100374799C; KR100568060B1; TW571066B; CN1566877A; CN1285872C; KR20030030961A

Abstract

A refrigerator comprises a refrigerating room(5)disposed in the upper part of a refrigerator body; a freezing room (9) disposed in the lower part of a refrigerator body; a vegetable room(7) provided between the refrigerating room and the freezing room; the ice making room (12) disposed in the corner of the bottom part of the refrigerating room having an automatic ice making device; and an ice making fan(31) provided in the rear part of the ice making room; The cooling air produced by the refrigeration cooler is sent to the ice making room via a duct(30) and the ice making fan(31), and a cooling air duct including the freezing fan and a return duct from the ice making room are jointly provided in the rear surface of the vegetable room; A weak freezing chamber (6) is disposed in a freezing space (40), and a damper (37) is disposed in a back face of the weak freezing chamber (6). wall in a freezing space (40) and a damper (37) is disposed in a back face of the weak freezing chamber (6). When weak freezing is performed for food in the weak freezing chamber (6), the damper (37) is made into an open state, cooling air is forced to flow in, resulting in a rapid freezing operation up to a maximum ice crystal generation zone or lower. Subsequently, a heater (43) is initiated and the food is maintained in the weak freezing temperature zone. The present invention provides a layout of a storage room of a usability, Furthermore, it may maintain fresh degree and taste of food with weak frozen temperature when preserving food.

Description

Refrigerator

Technical field

The present invention relates to the control method of the structure of cold storage chamber, especially ice-making compartment of refrigerator and control method, weak refrigerating chamber.

Background technology

In recent years, refrigerator is the trend of maximization along with its capacity of variation of people's life, from the switch of door often, usage frequency is high considers, the refrigerating chamber that holds reserve volume maximum in the configuration of the top of refrigerator body, its underpart configuration vegetable compartment and refrigerating chamber switch the chamber in the temperature that ice-making compartment with ice maker is set between vegetable compartment and the refrigerating chamber and the temperature inside the box can be switched to a plurality of temperature bands till from cryogenic temperature to the vegetables storage temperature simultaneously mostly.

Because the different storeroom of a plurality of storage temperature is set, originally single cooler become each temperature band special use cooler, such as cryogenic temperature with cooler and refrigerated storage temperature with two coolers such as cooler respectively with the structure of separately the corresponding setting of temperature chamber.

And, in this type of cooling with a plurality of coolers,, the cooler corresponding with each storeroom temperature is arranged on behind of this storeroom etc. in order to improve the cooling effectiveness of storeroom.That is, refrigeration uses cooler configuration on the next door of refrigerating chamber, vegetable compartment that will be higher slightly than this temperature of refrigerating chamber, also close refrigerating chamber configuration.Freezingly be arranged on the back side portion of refrigerating chamber, simultaneously, will become the ice-making compartment of freezer temperature and temperature and switch the chamber and be configured near the refrigerating chamber too with cooler.This form is called the 1st form.

And when frozen food, as early as possible the maximum ice crystallization generating zone by food, promptly-1～-5oC, can not destroy the cell tissue of food and freshness like this and carry out freezing preservation.

Therefore, during with the domestic refrigerator frozen food, generally be that the rotating speed of the compressor by improving freeze cycle waits and increases refrigerating capacity, accelerate the cooling velocity of food and carry out IQF.But, the temperature of preserving in the best as food temperature, such as-below the 18oC, can occur then that freezing degree is too severe, food such as meat and raw fish are difficult to the problem with the cutter cutting.

To this, learn recently, improve as cryogenic temperature food,-7～-carry out freezing preservation under the 10oC (hereinafter referred to as weak cryogenic temperature band), though then can not long preservation, preserve several weeks degree without any problem, and also convenient with the cutter cutting during cooking, someone has proposed a kind of refrigerator, has the switching chamber that can switch to all temps that comprises weak temperature band.

Following control can be carried out in this switching chamber, promptly opens the air door that is arranged on the refrigerator rear when the relative goal-setting temperature of indoor temperature is too high and sends into cold air, heats to keep design temperature with heater when room temperature is low.This form is called the 2nd form.

But, the refrigerator of the 1st form, its ice-making compartment is configured in the bottom of vegetable compartment, even also be positioned at the below from the layout of refrigerator integral body, therefore health wants crooked when getting ice, summers etc. are frequent to be utilized and especially uses inconvenience in period of ice.

The appearance and size of refrigerator since in Japan kitchen etc. the restriction of condition is set, its width, the degree of depth and highly all almost reached the limit, thereby the expansion of storage space also is restricted, the client needs requirement easy to use more and more stronger.

And the refrigerator of the 2nd form, when will not have the food of freezing normal temperature state to put into to be set in the switching of weak cryogenic temperature band indoor, because of this indoor temperature is higher than freezer temperature such as-25oC, so food temperature needs the more time by the temperature band of maximum ice crystallization generating zone, becomes so-called slowly freezing.

Slow when freezing, that food cell is organized is destroyed, the oneself black, protein of meat etc. decomposes and the oxidation of fat causes the food poor quality.

And will be than the temperature of weak cryogenic temperature band when high new food is put into, along with indoor temperature rises, the temperature of the former frozen food of having preserved with weak cryogenic temperature band also rises thereupon, the problem of food taste and freshness decline occurs.

Summary of the invention

The present invention carries out in order to address the above problem, purpose is to make the corresponding client's of refrigerator of the 1st form diversified requirement, by with cold duct mechanism and cooling machine to effective configuration of storeroom, provide a kind of ice-making compartment be configured in refrigerating chamber space storeroom layout one jiao, easy to use.

And the refrigerator that makes the 2nd form provides a kind of control method of refrigerator that when preserving food with weak cryogenic temperature band food freshness and taste is descended.

The 1st scheme of the present invention, by: the utilization that is arranged on refrigerator body top refrigerates the refrigerating chamber that cools off with fan with cooler and refrigeration, it is freezing with cooler and the freezing refrigerating chamber that cools off with fan to be configured in utilizing of refrigerator body bottom, be arranged on the vegetable compartment in the storage space between aforementioned refrigerating chamber and the refrigerating chamber, the heat insulation ice-making compartment that is disposed at one jiao of aforementioned refrigerating chamber bottom and has automatic ice-making plant, the ice making that is arranged on this ice-making compartment back is formed with fan, it is characterized in that, will carry by freezing with cold air that cooler generated to ice-making compartment by pipeline and ice making fan, and comprise freezing with fan aforementioned pipeline and from the return pipeline of ice-making compartment and be located at the back side portion of vegetable compartment.

This structure has improved the height and position of ice-making compartment, needn't just can take out ice like a cork to bending the body when using ice, simultaneously, even in order to import cold air and to extend pipeline with cooler ice-making compartment portion upward from being positioned at the freezing of refrigerator body below, since with freezing with cooler and cooling fan, cooling pipelines and return pipeline and be located at the back side of storeroom, can not influence the volumetric efficiency in the refrigerator, and the back side shape planarization of each storeroom, spatial accommodation can effectively be utilized.

The 2nd scheme of the present invention is characterized in that, will directly send into ice-making compartment by cold duct and fan with the freezing cold air that generates with cooler.The 3rd scheme of the present invention is characterized in that, sending into ice-making compartment by cold duct and ice-making compartment with fan with the freezing cold air that generates and send into refrigerating chamber with cooler.

This structure can be with in the ice-making compartment that cold gas is sent into reliably with refrigerated cooler is separated.

The 4th scheme of the present invention is characterized in that, in ice-making process, except the defrosting running of refrigerating chamber cooler, also makes the ice-making compartment fan running.

This structure makes the ice making fan running all the time, improves ice making speed thus, and is not subjected to the higher freezing temperature effect with cooler of temperature in the defrosting running, rises so can prevent the temperature of ice-making compartment, does not influence ice making speed.

The 5th scheme of the present invention, it is characterized in that, have flow into cooler to refrigeration cold-producing medium with the refrigeration refrigerating mode of refrigerating chamber and vegetable compartment cooling, and carry out device for switching between with freezing refrigerating mode with refrigerating chamber and ice-making compartment cooling to the freezing cold-producing medium that flows into cooler, ice-making compartment runs up when frozen mode with fan low-speed running when refrigerating refrigerating mode.

This structure can be cooled off ice-making compartment effectively reliably, and ice-making compartment is turned round with the fan economize on electricity.

The 6th scheme of the present invention is characterized in that, has the ice-make mode rapidly that ice-making compartment is cooled off rapidly, and ice-making compartment is being done running up of stipulated time in the ice-make mode rapidly with fan, but the ice making of high-speed and high-efficiency ground.

The 7th scheme of the present invention, it is characterized in that, have: flow into cooler to refrigeration cold-producing medium with the refrigeration refrigerating mode of refrigerating chamber and vegetable compartment cooling, and carry out device for switching between with freezing refrigerating mode with refrigerating chamber and ice-making compartment cooling to the freezing cold-producing medium that flows into cooler, also has the ice-make mode rapidly that ice-making compartment is cooled off rapidly, in ice-make mode rapidly, increase the refrigerating capacity of refrigerated cooler, ice making rapidly.

The 8th scheme of the present invention is characterized in that, in the ice making action stopped process, when ice-making compartment makes ice-making compartment stop with fan, can not only preserve the ice of storage with good state when set point of temperature is following, and ice-making compartment is realized energy-conservationization with the running of fan.

The 9th scheme of the present invention is characterized in that, is reclaiming the pump stop mode of cold-producing medium from the refrigerating chamber cooler, allows the ice-making compartment fan running.

This structure can increase the air in refrigerating chamber space and freezing with the heat exchange amount between cooler by ice-making compartment with the running of fan, can reclaim cold-producing medium rapidly.

The 10th scheme of the present invention, it is characterized in that, between weak refrigerating chamber and other storerooms across thermal wall, in the cold air path that leads to aforementioned weak refrigerating chamber, baffle plate is being set, when food being carried out said baffle being opened when weak freezing at aforementioned weak refrigerating chamber, make the cold air of flash-pot under the effect of cooling fan, to be forced into, to do the IQF running,, keep weak cryogenic temperature band then up to the lower limit that surpasses maximum ice crystallization generating zone.

Said structure makes food preserve with freshness and the good and easy state that cuts of taste.At this moment,, the freshness and the taste of food had no effect, can carry out good preservation although the food temperature of preserving at weak refrigerating chamber is lower than weak cryogenic temperature band.

The 11st scheme of the present invention, it is characterized in that, weak refrigerating chamber is configured in refrigerating chamber inside across thermal wall, and the heater that aforementioned weak refrigerating chamber is heated is set, when when aforementioned weak refrigerating chamber is weak freezing to the food work, said baffle is opened, make the Quilt with air conditioning cooling fan of flash-pot to force to send into, to do the IQF running, up to the lower limit that surpasses maximum ice crystallization generating zone, then, when temperature in the refrigerator is lower than target temperature, to aforementioned heater energising, so that do not exceed the lower limit of maximum ice crystallization generating zone.

Said structure can make the weak freezer temperature that is lower than target temperature because of IQF easily rise to weak cryogenic temperature band, and can keep weak cryogenic temperature band reliably.

The 12nd scheme of the present invention is characterized in that, the set point of temperature value of IQF running below the lower limit of maximum ice crystallization generating zone keeps weak cryogenic temperature band then.

In the said structure,,, can both preserve the freshness and the taste of food evenly, well regardless of volume of food even the bigger food of cube meat equal-volume also can be cooled to below the maximum ice crystallization generating zone.

The 13rd scheme of the present invention is characterized in that, in aforementioned IQF running, the defroster of aforementioned cooler is not worked.

Even said structure arrives the moment that begins to defrost in the IQF operation process, also can preferentially carry out IQF, can bring into play refrigerating capacity to greatest extent, so can cool off rapidly reliably rapidly.

Description of drawings

Fig. 1 be the refrigerator of an example of the present invention remove the door state under front view.

Fig. 2 is that the storeroom of Fig. 1 is removed the front view under the state of back side portion.

Fig. 3 is the cross-sectional view of the ice-making compartment part of Fig. 1.

Fig. 4 is the longitdinal cross-section diagram of the reefer space pipeline configuration partly of presentation graphs 1.

Fig. 5 is the cross-sectional view along the A-A line of Fig. 2.

Fig. 6 is the cross-sectional view along the B-B line of Fig. 2.

Fig. 7 is the control flow chart of an example of the present invention.

Fig. 8 is the synoptic diagram of the freeze cycle of an example of the present invention.

Fig. 9 is the synoptic diagram of the cold duct of an example of the present invention.

Figure 10 is the synoptic diagram of cold duct of other examples of Fig. 9.

Figure 11 is the synoptic diagram of cold duct of the another example of Fig. 9.

Figure 12 be the refrigerator of an example more of the present invention remove the door state under front view.

Figure 13 is the expansion longitdinal cross-section diagram that refrigerator shown in Figure 12 is wanted portion.

Figure 14 is the key diagram of the freeze cycle of refrigerator shown in Figure 12.

Figure 15 is the control system flow chart of refrigerator shown in Figure 12.

Figure 16 is the temperature variation of weak refrigerating chamber when preserving with weak cryogenic temperature band.

Figure 17 is contained in the preservation control flow chart of the interior food of weak refrigerating chamber at weak cryogenic temperature band.

The specific embodiment

Below with reference to the accompanying drawings the present invention's one example is explained.Fig. 1 is the front view of refrigerator body 1 that has omitted each storeroom configuration status of demonstration of door, forms storage space by the interior case 3 that is arranged on the inboard of outer container 2 across not shown heat insulation material, is divided into a plurality of storerooms with thermal wall.

The 5th, in each storeroom usage frequency the highest, for the ease of confirming and take out indoor stock and be arranged on the refrigerating chamber of refrigerator body topmost, its front openings portion is utilized the door that not shown hinge means is rotatably installed on the body and closes.

In the bottom of refrigerating chamber 5, form vegetable compartment 7 across dividing plate 6, in order to preserve than the refrigeration room temperature vegetables etc. of high-temperature slightly.

Below vegetable compartment 7, hold the refrigerating chamber 9 of frozen food across 9 configurations of heat insulation next door.This refrigerating chamber 9 is divided into 2 layers up and down, is provided with IQF corner 10 on the upper strata.

The front openings portion of aforementioned vegetable compartment 7 and refrigerating chamber 9 closes with not shown door, and the framework that the side prolongs in storeroom is housed in the door inboard, put container above the framework at this, not shown ball by being installed in the aforesaid frame rear end engages slip with track component etc. on being located at box wall, and container can be extracted out at fore-and-aft direction.

A dihedral becomes the ice-making compartment of dividing with thermal wall 11 12 below refrigerating chamber 5 spaces.This ice-making compartment 12 is equipped with the automatic ice-making plant 14 that obtains water and carry out ice making from the refrigerating chamber 5 interior feed-tanks 13 that are located at its top, and configuration accepts the withdrawable ice storage case of the ice made, and ice-making compartment 12 obtains being cooled to cryogenic temperature from aftermentioned is freezing with the cold air of cooler 27.

Automatic ice-making plant 14 detects in the ice making detecting sensor 55 that is contained in ice-making disc bottom outside-just think water freeze over finishing ice-making in the ice-making disc during 19oC, and the ice of ice-making disc is dropped down onto fall the ice action in the ice container of below.Just this ice-making disc is imposed torsion so that ice separation by ice-making disc being overturn and spending the rotation that limits the one side when rotating at work 180.

In addition, has the inspection ice bar that detects the ice storage amount, fall move to before the ice action in the ice container below to measure the ice amount,, inspection ice bar many when the ice storage amount run into ice the surface and can't be mobile downwards the time, promptly detect full ice state, with stop after this fall ice and feedwater action, be removed at ice, the ice storage amount is in holding state before reducing.

In the refrigerating space of ice-making compartment 12 sidepieces, be provided with ice-making compartment 12 and switched chamber 15 by the heat insulation temperature that separates equally.Cold airflow is controlled in the switching that this temperature is switched the cold air baffle plate 16 of the side wall upper part of chamber 15 by being located at ice-making compartment 12, can carry out-cryogenic temperature of 18oC ,-the weak cryogenic temperature about 7oC, the chilling temp of 0oC ,+multistage temperature control till the refrigerated storage temperature of the 1～2oC grape wine cooling temperature to the+8oC, can change indoor temperature as required and set.But, switch chamber 15 when being set to weak cryogenic temperature, then be equivalent to weak refrigerating chamber described later in temperature.

Each storeroom as shown in Figure 7, its control device 40a according to the refrigeration that detects temperature in the refrigerating chamber space with temperature sensor 51, detect refrigerating chamber 9 temperature freezingly start fan described later, cold air baffle plate 16, compressor 41 etc. with adjusting the temperature inside the box with the switching chamber of temperature sensor 53, detected temperatures switching chamber 15 temperature with the detected value of the outer temperature degree sensor 58 of temperature sensor 57, the outer temperature degree of detection with temperature sensor 52, the ice making that detects ice-making compartment 12 temperature.

The rear side of aforementioned each storeroom as the front view of the state of removing each storeroom back side portion of Fig. 1, be Fig. 2, disposes cooler and pipeline that cold air (arrow) is provided to each storeroom.

Promptly, refrigeration fan 22 is set at an upper portion thereof at the back side of refrigerating chamber 5 central configuration refrigeration cooler 21.Refrigeration with fan 22, described laterly freezingly carry out VFC with fan 31 by control device 40a with fan 28 and ice making, its rotating speed can change synchronously with the temperature inside the box, operation mode or compressor 41.Be provided with the cold air outlet 23 that leads to refrigerating chamber top in refrigeration with fan 22 fronts, and form pipeline 24 at the above-below direction of reverse side top to the both sides at the refrigerating chamber back side, predetermined distance position at pipeline 24 is provided with the cold air air outlet 25 that leads in the case, such as, to the rack 17 of refrigerating chamber 5 blow out cold air one by one, cooling off in the refrigerating chamber.

Said structure increases cooler capacity and cooling capacity by refrigerating with cooler configuration at the big refrigerating chamber back side of area, even improve evaporating temperature, also can be to indoor abundant cooling, and so can reduce absorption to food water in case food drying.And its both sides can be used as pipeline and use, and can make the indoor and outdoor planarization, can effectively utilize spatial accommodation.

In addition, the back side sets cold air import 26 below refrigerating chamber 5, sucks at the cold air of refrigeration indoor circulation and sends cooler 21 then back to.

The back side of the refrigerating chamber 9 below refrigerator body is provided with freezing with cooler 27.Be provided with above with cooler 27 freezingly with fan 28 freezing, so that cold air is blowed in the refrigerating chamber, the ice making that simultaneously a part of cold air is located at ice-making compartment 12 backs from pipeline 30 guiding that extend upward is with fan 31, thereby blows out to ice-making compartment 12.

Switch between the chamber 15 with fan 31 and temperature in ice making, ice-making compartment as Fig. 3 partly enlarges shown in the cross-sectional view, be provided with and switch chamber pipeline 32 and cold air baffle plate 16, will guide into a part of cold air of fan 31 from ice making and switch the chamber, blow to temperature by cold air baffle plate 16 and switch in the chamber 15 with pipeline 32.

Aforementioned temperature is switched the chamber and is embedded in the isolation part between ice-making compartment 12 and the temperature switching chamber 15 with cold air baffle plate 16, does not reduce storage space.The pipeline 30 that leads to ice-making compartment 12 can be utilized in addition,, effective utilization of storage space can be realized so the pipeline space that temperature is switched chamber 15 special uses needn't be set.

Each self-forming cold

air sucting inlet

34,35 in ice-making compartment 12 and temperature are switched chamber 15 is provided with from the back side of vegetable compartment 7 to the ice-making compartment Returning pipe 36 of ice-making compartment 9 separately and switches chamber Returning pipe 37, and circulation cold air is turned back to freezing usefulness cooler 27.

These circulating cold air pipelines as the longitdinal cross-section diagram of Fig. 4, Fig. 5 along the sectional view of the A-A line of Fig. 2 and Fig. 6 along shown in the sectional view of the B-B line of Fig. 2, the cold duct 30 that will lead to ice-making compartment with from ice-making compartment and switch the

chamber Returning pipe

36,37 and freezing with cooler 27, freezingly be set up in parallel back side portion in refrigerating chamber 9 or vegetable compartment 7 with fan 28 and aforementioned Returning

pipe

36,37.

But this structure maximum limit ground reduces the concavo-convex of the storeroom back side, reduce towards each indoor ledge, effectively utilize the volume service efficiency of vegetable compartment 7 and vegetable compartment 9, the convenient interior space of using, and above-mentioned parallel configuration makes each pipeline linearly, simple in structure, can not produce the drag losses that pipe bending causes, can carry out the cold air air-supply efficiently.

And, at refrigerator body 1 back side of switching chamber 15 from vegetable compartment 7 to temperature,, be provided with control loop base plate 40 in this recess to refrigerator running control recess 39 being set with the parallel position of refrigerated cooler 27, freezing fan 28 or each

pipeline

30,36.

Below, describe with reference to the operation mode of refrigerator.Fig. 8 is the synoptic diagram of explanation kind of refrigeration cycle of the present invention.The high temperature refrigerant of discharging from the compressor 41 that is arranged on refrigerating chamber 9 rear lower portion Machine Rooms is in condenser 43 heat releases, and carry out stream by transfer valve 42 and control, to refrigerate cooler 21 or refrigerated cooler 27 coolings, and implement mutual cooling operation mode, promptly alternatively carry out refrigeration refrigerating mode described later and freezing refrigerating mode.

The refrigeration refrigerating mode is started working when the temperature of refrigerating space is higher than design temperature.This pattern is, transfer valve 42 switched, so that cold-producing medium flows into capillary 44 and in 21 evaporations of refrigeration cooler, so that refrigerating space is cooled off.At this moment, refrigeration is with the switching run-in synchronism of fan 22 and refrigerant flow path and blow out cold air cool off in refrigerating space.The cold-producing medium that carries out gasifying after the heat exchange with cooler returns compressor 40.

Frozen mode is started working when the temperature of reefer space is higher than design temperature.This pattern is, transfer valve 42 is switched, and so that refrigerant flow path is switched, makes cold-producing medium flow into capillary 48 and in refrigerated cooler 27 evaporations, and returns compressor 41 by accumulator 45 and check valve.

Synchronous with the switching of the refrigerant flow path that leads to refrigerated cooler 27 then, freezing with common rotation speed operation with fan 28, so that reefer space is cooled off.

During defrosting mode, to be arranged on refrigerated cooler 27 bottoms, such as Defrost heaters such as Glass tube heater 47 energising, with to refrigerated cooler 27 defrostings.Defrosting mode reaches 8 hours timing with the running cumulative time such as compressor 41 to carry out, and begins after switching to the refrigeration pattern.Then by be located at defrosting sensor 56 on the refrigerated cooler 27 make refrigerated cooler 27 be heated to set point of temperature, such as behind the 3oC, defrosting mode finishes, and is returned to the cooling running.

Rapidly during ice-make mode, the push-botton operation of the operation board 54 by being located at the refrigerator doors surface etc. begins to carry out, and cold air baffle plate 16 is opened fully, makes ice making with fan 31 rotation at a high speed, and the air conditioning quantity that is sent to ice-making compartment is increased, last till finishing ice-making or till ice-make mode is removed rapidly always.

During the pump stop mode, when refrigeration pattern and frozen mode are switched, close transfer valve 41, allow the 40 rotation stipulated times of compressor,, make the cold-producing mediums that remain in the refrigerated cooler 27 obtain reclaiming such as 30 seconds.

Below the cooling body of each storeroom is described.

By the cold air refrigeration at an upper portion thereof of

aforementioned cooler

21,27 coolings with and freezing with in each storeroom space, blowing out under each self-applying of

fan

22,28, the cold air that blows out is as shown by arrows with each refrigerating chamber cooling, return cooler from suction inlet then, repeat such circulation and make the temperature that each storeroom is cooled to stipulate and kept.

In the refrigerating chamber 5, blow out above refrigerating chamber from refrigeration cold air its part under refrigerating with the effect of fan 22 with cooler 21, other cold air branch in the pipeline 24 that forms in both sides, the refrigerating chamber back side simultaneously, and blow in the refrigerating chamber from the cold air blow-off outlet 25 that wears at interval in accordance with regulations at pipeline 24 above-below directions, cold air after the refrigeration indoor circulation returns cooler 21 from suction inlet 26, and circulating cold air so repeats.

After refrigerating chamber is cooled to set point of temperature, stop to refrigerate running, as stop after the cooling effect indoor temperature and rise to set point of temperature when above with fan 22, drive fan 22 is carried out the cooling effect of circulating cold air once more.

The cooling control of reefer space is identical with aforementioned refrigerating chamber control substantially, freezing cold air with cooler 27 is delivered in the refrigerating chamber 9 with fan 28 by freezing, the air-supply pipeline 30 that is provided with by the mediad top, the back side from the vegetable compartment 7 on refrigerating chamber top simultaneously is directed in the ice-making compartment 12 in one jiao in the refrigerating chamber space that is located at top.

Be located at this ice-making compartment back the 3rd fan, to be ice making with the rotation of fan 31 make from the part of freezing cold air with fan 28 blows to ice-making compartment 12, and a part imports adjacent temperature and switches in the chamber 15 and to it and cool off by switching chamber pipeline 32 and cold air baffle plate 16.

Cold air baffle plate 16 changes the influx of the aperture area of cold air air outlet with control cold air according to design temperature, temperature is switched the temperature band of regulations such as remaining on aforesaid cryogenic temperature or chilling temp in the chamber 15 with this.

To ice-making compartment 12, temperature switch chamber 15 carry out cooled cold air from the ice-making compartment of the both sides of the aforementioned air-supply pipeline 30 that is formed at vegetable compartment 7 back sides with return pipeline 36 and switch chamber return pipeline 37 and return freezing usefulness cooler 27, and with circulation in refrigerating chamber 9 after cold air interflow and be cooled once more, continue the circulating cold air cycle.

But, the storeroom that is located at ice-making compartment 12 sidepieces is not limited to the such temperature of the foregoing description and switches the chamber, even than the low chilling temp dedicated chamber of temperature of refrigerating chamber or rapidly cooling chamber also can be used as cooling chamber and arbitrarily set and use.

Below a modification of the present invention is explained.

(modification 1)

Fig. 9 is the synoptic diagram of the pipeline configuration of aforementioned the 1st example of explanation, and Figure 10 is the pipeline configuration synoptic diagram of modification 1.

The 1st example of the present invention is blown upward via cold duct 30 with fan 28 by freezing from the cold air that refrigerated cooler 27 generates, and is blowed in the ice-making compartment 12 with fan 31 by ice making as shown in Figure 9.As shown in figure 10, the cold air that is generated by refrigerated cooler 27 is blowed in the refrigerating chamber 9 with fan 28 by freezing, and the air in this refrigerating chamber space blows to ice-making compartment 12 via the pipeline that is located at the refrigerating chamber rear by ice making fan 31.

In addition as shown in figure 11, the cold air that is also generated by refrigerated cooler 27 is directly via blowing to ice-making compartment 12 by ice making fan 31 behind the pipeline.Under this occasion, can be configured in the below of refrigerated cooler 27 with fan 28 with freezing, this structure can improve the refrigerating capacity of refrigerating chamber 9 and reliably ice-making compartment be cooled off.

(modification 2)

Automatic ice-making plant is in ice-making process, and except defrosting mode, the ice making of turning round is with fan 31.

When defrosting running, freezing higher with cooler 27 temperature, as the words of the air under this higher temperature environment being blown to ice-making compartment 12 indoor temperature is significantly risen, not only ice making time lengthening, and also the ice that stores can melt.In addition, refrigeration is during pattern, although freezingly be not cooled with cooler 27, chiller temperature remains on low temperature, makes ice-making compartment 12 continue to cool off by running ice-making compartment fan 31.

Therefore, except that defrosting mode,, can shorten the ice making time like this, keep the temperature inside the box reliably even be not the frozen mode ice-making compartment fan 31 that also turns round.

(modification 3)

During the refrigeration pattern, make ice making, during frozen mode, ice-making compartment fan 31 is run up with fan 31 low-speed runnings.

During the refrigeration pattern,,, less with the common difference that runs up so no matter ice making is rotated at a high speed and low-speed running with fan 31 because of refrigerated cooler 27 is not cooled.Ice making not only can be economized on electricity but also can be reliably with ice-making compartment 12 coolings with fan 31 low-speed runnings.

(modification 4)

In case the user utilizes operation board 54 to set ice-make mode rapidly, then enter and set arbitrarily that time ratio was as 8 hours IQF pattern.Ice making runs up with fan 31, uses up up to the water of feed-tank 13, or detects till the ice storage amount expired.Like this can be rapidly, ice making effectively.

(modification 5)

In case the user utilizes operation board 54 to set ice-make mode rapidly, then in case with the design temperature of refrigerating chamber 9 be decided to be such as-20oC, then set point of temperature suppression ratio such as 3K.

Ice making is with fan 31 and compressor 41 run-in synchronisms, in case reduce the design temperature of refrigerating chamber 9, then Shi Ji indoor temperature will be higher than design temperature, and compressor 41 increases rotating speed in order to improve refrigerating capacity.Thereby also increase automatically with the rotating speed of compressor 41 synchronous operated ice making fans 31, refrigerating capacity improves carries out ice making rapidly.

(modification 6)

When the ice making action stops, regulating the rotating speed of ice making, to keep the indoor temperature of ice-making compartment 12 with fan 31.That is, during the ice making action stopped, as long as the ice that keeps storing does not melt, so the rotating speed that can reduce ice making fan 31 is preserved ice well effectively ice-making compartment 12 is cooled off, and the ice making of turning round effectively was with fan 31, to save electric power.When being low temperature, ice making indoor temperature at this moment, also can stop ice making fan 31.

(modification 7)

Ice making is turned round with fan 31.Pump stops to carry out when switching refrigerating mode, preferably freezing cold-producing medium with cooler 27 is recycled to compressor 41 as soon as possible.By running ice making fan, can increase the air and the freezing heat exchange amount of reefer space, so can reclaim cold-producing medium rapidly with cooler.

Followingly other examples of the present invention are explained with reference to accompanying drawing.Figure 12 is a front view of removing the refrigerator of door of the present invention, and Figure 13 is the longitdinal cross-section diagram of its major part.

Refrigerator 101 is formed by heat insulating box, is divided into refrigerating space 130 and reefer space 140 by thermal wall, and these spaces are heat insulation each other, and is independent fully, by each cooling body described later cold air between each chamber do not mixed.

Refrigerating space 130 is divided into refrigerating chamber 104 and vegetable compartment 105 by refrigeration partition wall 103, forms ice-making compartment 109 in the bottom of refrigerating chamber 104.

Form the 1st refrigerating chamber 107 on the top of reefer space 140, form the 2nd refrigerating chamber 108 in its underpart, form weak refrigerating chamber 106 on the right side of the 1st refrigerating chamber 107.

In the configuration refrigeration of the back side of refrigerating chamber 104 with evaporimeter (to call the R evaporimeter in the following text) 110 with refrigerate with cooling fan (to call the R fan in the following text) 111, R fan 111 is according to the switching of the temperature inside the box change and door and controlled, configuration is freezing with evaporimeter (to call the F evaporimeter in the following text) 112 and freezing with cooling fan (to call the F fan in the following text) 113 on the back wall of the 1st and the 2nd refrigerating chamber 107,108, independently carries out circulating cold air separately so that refrigerating space 130 and reefer space 140 cooled off.

Ice-making compartment 109 is disposed at the lower left side of refrigerating chamber 104, is surrounded by thermal wall on every side, separates with refrigerating chamber 104 and carries out indoor temperature control.

Ice-making compartment is set with pipeline 129 from F evaporimeter 112 to the back side of ice-making compartment 109, ice-making compartment is set with fan (to call the I fan in the following text) 131 with the top of pipeline 129 at this ice-making compartment.

Ice making is to make the cold air of fan 113 blow to ice-making compartment 109 and blow to ice-making disc with pipeline 129 and by I fan 131 via ice-making compartment.Make the water freezing in the ice-making disc thus, finish in case freeze, 132 ice-making disc are rotated even drive unit makes, upset, distortion, make ice break away from ice-making disc and fall to ice storage case 133 to store.

Weak refrigerating chamber 106 is adjacent with the 1st refrigerating chamber 107 across thermal wall 134, end face 102, the bottom surface 135 that separates with the 2nd refrigerating chamber 108, and refrigerator body right side wall and back wall 136 all form by thermal wall, be provided with the baffle plate 137 that the cold air that flows into weak refrigerating chamber 106 is controlled on the top of back wall 136, on bottom surface 135, be provided with the cold air outlet 138 that leads to the F evaporimeter from weak refrigerating chamber 106.

Set the container 139 of store food in the inside of weak refrigerating chamber 106, it is installed on the door that is located at weak refrigerating chamber 106 openings, can freely extract out.

The lower backside of weak refrigerating chamber 106 be provided with by the thermosensitive thermometer that detects indoor temperature constitute weak freezing with temperature sensor (to call the S sensor in the following text) 141, it is not subjected to the influence from the cold wind of baffle plate 137, is provided with the weak refrigerating chamber cooling fan (hereinafter referred to as the S fan) 142 that send cold air to the baffle plate 137 of weak refrigerating chamber 106 at 136 rears, the back side of weak refrigerating chamber 106.

Be provided with the heater 143 of the temperature inside the box rising that makes weak refrigerating chamber 106 in the bottom surface 135 of weak refrigerating chamber 106.

Below F evaporimeter 112, be provided with Glass tube heater 146 as defroster, to reach 8 hours timing such as the running accumulated time of compressor 115, the defrosting running of beginning heater heating, the defrosting on being contained in F evaporimeter 112 finish to finish when sensor (hereinafter referred to as the D sensor) 147 detects the F evaporator temperature and rises to set point of temperature such as 3oC defrosting.

In the IQF described later running course of work, even arrived defrosting zero hour, the defrosting running can not start yet, but waits until that always IQF finishes.

In the Machine Room 114 that the back wall bottom of refrigerator 101 forms, be provided with compressor 115, and be provided with condenser and the various pipe arrangement that forms kind of refrigeration cycle with compressor.Nearby be provided with fan (hereinafter referred to as the C fan) 125 at condenser 121 in addition.

Figure 14 represents the kind of refrigeration cycle of refrigerator 101.The cold-producing medium of discharging from compressor 111 switches to refrigerant flow path by condenser 121 backs by triple valve 122.

An outlet of this triple valve 122 is connected with R evaporimeter 110 with refrigeration capillary 123 successively, and another outlet is connected with freezing capillary 124, F evaporimeter 112 and accumulator 116 successively.This triple valve 122 is changeable to be controlled to following 4 circulation status: cold-producing medium is only sent into the state of R evaporimeter 110 sides, only send into the state of F evaporimeter 110 sides, cold-producing medium is delivered to F, R evaporimeter 110,112 both sides' full-gear, with 122 full-shut positions that coolant channel is all cut off of valve.

The outlet pipe arrangement of accumulator 116 is connected with check valve 117 in Machine Room 114, and the outlet side of check valve 117 is connected with the outlet pipe arrangement interflow of R evaporimeter 110 and with the suction side of compressor 115.

Figure 15 is the module map of the control system of refrigerator 101.As shown in the figure, the upper rear portion that is arranged on refrigerator 101 carry out control part 164 that the microcomputer of refrigerator control constitutes respectively with freeze cycle is carried out compressor driven 115, with the cold air row of FR evaporimeter 110,112 to the R of each storeroom fan 111, F fan 113, C fan 125, I fan 131, S fan 142, regulate air conditioning quantity baffle plate 137, detect each room temperature and control and regulation and respectively cool off R sensor 144, F sensor 145, S sensor 141, the D sensor 147 of machine, be arranged on the operating portion 118 that carries out various runnings controls on 104 in the refrigerator and show and be connected.

Here temperature control running in the refrigerator 101 that carries out is usually explained.High temperature refrigerant after the compressed machine 115 compression pressurizations is in condenser 121 heat releases, enter triple valve 122 then, switch to the R evaporimeter or F evaporimeter 112 carries out evaporative cooling by stream, thereby carry out the refrigeration pattern of back and the alternate-running that frozen mode hockets.

The refrigeration pattern is used for the temperature of refrigerating space 130 is remained on the design temperature of regulation, when the refrigerating space temperature rises to greater than setting value, switch three-way valve 122, make cold-producing medium flow into R evaporimeters 110 sides from refrigeration capillary 123, the cold air importing refrigerating space 130 that will produce by evaporation is with indoor cooling.The cold-producing medium of evaporation gasification will return compressor 115, but during the refrigeration pattern, does not flow into than in the low F evaporimeter 112 of R evaporimeter 110 evaporating temperatures and condensation once more dress check valve 117 on the runner of F evaporimeter 112 sides in order to make cold-producing medium.

In the cooling procedure of R evaporimeter 110, when switching refrigerant flow path, drive R fan 111, cold air is blown in the refrigerating space 130 cools off indoor.

Frozen mode starts when the temperature of reefer space 140 is higher than design temperature.This pattern is switched refrigerant flow path by triple valve 122, and cold-producing medium is flowed in the freezing capillary 124, returns compressor 115 in 112 evaporations of F evaporimeter and by accumulator 116 and check valve 117, forms kind of refrigeration cycle.

To the frozen mode of F evaporator cools the time, when switching refrigerant flow path with common rotation speed operation F fan 113, with to cooling off in the case.

(5 to-10oC) situation, describe according to the flow chart of Figure 16 and Figure 17 at weak temperature band about being placed in food preservation in the weak refrigerating chamber.

In step 1 (S1), the food of normal temperature is put into the container 139 and the pass of weak refrigerating chamber 106 and called, the client indicates (S2) by the storage temperature of 118 pairs of food of operating portion.This storage temperature is set in and can promptly between-5 to-10oC, be set at here-8oC with the weak cryogenic temperature band of the easy cutting food products of cutter.

Step 3, the client is placed on out the weak freeze switch of operating portion 118 state of (ON).Like this, control part 164 switches to frozen mode with freeze cycle, and F fan 113 is with than high usually rotating speed rotation, and S fan 142 also rotates.

Then, open baffle plate 137, with refrigerating chamber 106 a little less than the cool-air feed of F evaporimeter 112, as shown in figure 16, carry out IQF running (S4), the food temperature in weak refrigerating chamber reduce to the design temperature lower, this example than the lower limit of maximum ice crystallization generating zone be-10oC till.This moment heater 143 no powers.

When carrying out the IQF running, the food that is placed in the container 139 is cooled, and fast by the easiest freezing temperature band of food water, promptly-1～-the maximum ice crystallization generating zone of 5oC, so can be under the prerequisite of taste that keeps food and freshness frozen food.

Continue the IQF running, when the food temperature that S sensor 141 detects reduce to-when 10oC is following, stop the IQF running ,-then continue the IQF (S5) of step 4 when 10oC is above.

In step 6, close baffle plate 137 and stop S fan 142, heater 143 heating.At this moment, carry out PID control, do not make to surpass-5oC.This PID constant is preferably set not above the time that arrives target temperature.As shown in Figure 5,, then stop heater 143 (S7), open and close baffle plate 137 then in case food temperature rises to-8oC, with the temperature inside the box retentive control at-8oC (S8).

Like this, carry out the IQF running, by maximum ice crystallization generating zone, food does not lose taste and freshness fast, preserves with weak cryogenic temperature band then, can be with food with the freezing preservation of the state of easily cutting.At this moment, the food that has been kept in the weak refrigerating chamber can be cooled to than the low temperature of weak cryogenic temperature band, but the decline of temporary transient temperature can not have any influence to the freshness and the taste of food, can carry out good preservation.

Even weak refrigerating chamber 106 is set in reefer space 140, also can make temperature rise to weak cryogenic temperature band easily by heater 143 heating to the bottom surface.

When IQF running is performed until temperature and is lower than the lower limit set point of temperature of maximum ice crystallization generating zone, even so big food of cube meat equal-volume, also can be cooled to below the maximum ice crystallization generating zone, regardless of volume of food, can both preserve the freshness and the taste of food equably well.

Running may make food temperature and the temperature inside the box produce difference rapidly, but as long as prior kind and size at food, measure the temperature difference of the temperature inside the box and food temperature in advance, and the temperature inside the box that can make food reach the lower limit of maximum ice crystallization generating zone is determined by the kind and the size of food, in case then the client is by kind and the size input of operating portion with food, and select the most definite design temperature to turn round rapidly, just can food be cooled to below the lower limit of maximum ice crystallization generating zone reliably.In addition, as utilize infrared ray sensor etc. directly to detect food temperature, then can be cooled to more reliably below the maximum ice crystallization generating zone.

In addition, because control heater makes the lower limit that does not surpass maximum ice crystallization generating zone, can keep weak cryogenic temperature band reliably.

And, in IQF running, defrosting running heating, though in IQF to the moment that should begin to defrost, also can preferentially carry out IQF, can bring into play refrigerating capacity to greatest extent.

Example of the present invention is that weak refrigerating chamber 106 is located in the refrigerating chamber 108, but is not limited thereto, and also can separate and independently establish door with refrigerating chamber, also can be that the temperature that can switch to the set point of temperature band that comprises weak cryogenic temperature band is switched chamber 15.

The invention effect

In sum, getting of ice-making compartment iced the position near user's waist, health needn't turn forward and just can easily take out ice when using ice, easy to use, the freezing pipeline that imports top ice-making compartment portion with the cold air of cooler of body below will be positioned at even will be provided with simultaneously, by with freezing with cooler and cooling fan, cooling pipelines and return pipeline and be located at the back side of storeroom, also can not damage the volumetric efficiency in the case, and can make each storeroom back side shape planarization, effectively utilize and lay the space.

In addition and since be at weak refrigerating chamber with the food IQF, and fast by behind the maximum ice crystallization generating zone with the preservation of weak cryogenic temperature band, can not destroy the cell tissue of food, so can keep original flavor, preserve with fresh state.

Claims

1. refrigerator, by: the refrigerating chamber that is arranged on refrigerator body top, utilizes refrigeration to cool off with fan with cooler and refrigeration; Be configured in the refrigerator body bottom, utilize freezing with cooler and the freezing refrigerating chamber that cools off with fan; Be arranged on the vegetable compartment in the storage space between aforementioned refrigerating chamber and the refrigerating chamber; The heat insulation ice-making compartment that is disposed at one jiao of aforementioned refrigerating chamber bottom, has automatic ice-making plant; The ice making that is arranged on this ice-making compartment back is formed with fan, it is characterized in that, will by pipeline and ice making fan to ice-making compartment carry by freezing with cold air that cooler generated and comprise freezing with fan aforementioned pipeline and from the return pipeline of ice-making compartment and be located at the back side portion of vegetable compartment.

2. refrigerator according to claim 1 is characterized in that, directly sends into ice-making compartment by cold duct and ice making with fan with the freezing cold air that generates with cooler.

3. refrigerator according to claim 1 is characterized in that, sends into ice-making compartment by cold duct and ice making with fan with the freezing cold air that generates and send into refrigerating chamber with cooler.

4. refrigerator according to claim 1 is characterized in that, in the ice-making process, during except freezing defrosting running with cooler, make the ice making fan running.

5. refrigerator according to claim 1, it is characterized in that, have flow into cooler to refrigeration cold-producing medium with the refrigeration refrigerating mode of refrigerating chamber and vegetable compartment cooling, and carry out device for switching between with freezing refrigerating mode with refrigerating chamber and ice-making compartment cooling to the freezing cold-producing medium that flows into cooler, ice-making compartment runs up when frozen mode with fan low-speed running when refrigerating refrigerating mode.

6. refrigerator according to claim 1 is characterized in that, has the ice-make mode rapidly that ice-making compartment is cooled off rapidly, and ice-making compartment runs up in the stipulated time in ice-make mode rapidly with fan.

7. refrigerator according to claim 1, it is characterized in that, have flow into cooler to refrigeration cold-producing medium with the refrigeration refrigerating mode of refrigerating chamber and vegetable compartment cooling, and carry out device for switching between with freezing refrigerating mode with refrigerating chamber and ice-making compartment cooling to the freezing cold-producing medium that flows into cooler, also have the ice-make mode rapidly that ice-making compartment is cooled off rapidly, in ice-make mode rapidly, increase the refrigerating capacity of refrigerated cooler.

8. refrigerator according to claim 1 is characterized in that, during the ice making action process of stopping is ended, when the ice making indoor temperature makes ice-making compartment stop with fan when set point of temperature is following.

9. refrigerator according to claim 8 is characterized in that, reclaiming the pump stop mode of cold-producing medium from the refrigerating chamber cooler, makes the ice-making compartment fan running.

10. refrigerator, it is characterized in that, between weak refrigerating chamber and other storerooms across thermal wall, in the cold air path that leads to aforementioned weak refrigerating chamber, baffle plate is set, when food being carried out said baffle being opened when weak freezing, make the cold air of flash-pot under the effect of cooling fan, to be forced into to do the IQF running at aforementioned weak refrigerating chamber, till surpassing the lower limit of maximum ice crystallization generating zone, keep weak cryogenic temperature band then.

11. refrigerator, it is characterized in that, weak refrigerating chamber is configured in refrigerating chamber inside across thermal wall, and the heater that aforementioned weak refrigerating chamber is heated is set, when when aforementioned weak refrigerating chamber is weak freezing to the food work, said baffle is opened, make the Quilt with air conditioning cooling fan of flash-pot to force to send into to do the IQF running, till surpassing the lower limit of maximum ice crystallization generating zone, then, when temperature in the refrigerator is lower than target temperature, to aforementioned heater energising, so that do not exceed the lower limit of maximum ice crystallization generating zone.

12. refrigerator according to claim 10 is characterized in that, carries out the IQF running, the set point of temperature value below the lower limit that reaches maximum ice crystallization generating zone keeps weak cryogenic temperature band then.

13., it is characterized in that in aforementioned IQF running, the defroster of aforementioned cooler is not worked according to claim 10 or 11 described refrigerators.