WO2011111382A1 - 冷蔵庫 - Google Patents
冷蔵庫 Download PDFInfo
- Publication number
- WO2011111382A1 WO2011111382A1 PCT/JP2011/001375 JP2011001375W WO2011111382A1 WO 2011111382 A1 WO2011111382 A1 WO 2011111382A1 JP 2011001375 W JP2011001375 W JP 2011001375W WO 2011111382 A1 WO2011111382 A1 WO 2011111382A1
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- storage
- refrigerator
- unit
- amount
- light
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/02—Sensors detecting door opening
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/06—Sensors detecting the presence of a product
Definitions
- the present invention relates to a refrigerator, and more particularly to a refrigerator capable of controlling the temperature in the refrigerator.
- FIG. 14 shows a front view of the refrigerator compartment of the conventional refrigerator described in Patent Document 1.
- a movable cold air discharge device 102 provided in the refrigerator compartment 101 supplies cold air to the left and right to achieve uniform temperature in the cabinet.
- the stored items are not always stored at the optimum temperature. This is because the refrigerator detects and controls the ambient temperature in the cabinet by the thermistor, and there is no means for directly detecting the temperature of the stored item. Therefore, a difference occurs between the ambient temperature in the storage and the actual temperature of the stored items.
- the inside of the refrigerator is cooled and reaches the set temperature.
- a temperature difference depending on the amount of the stored item occurs between the detected temperature of the arranged temperature detecting means and the temperature of the stored item.
- the time to reach the optimum storage temperature varies depending on the storage amount.
- the cooling time is generally short when the storage amount is small, and the cooling time is long when the storage amount is large. In particular, when the storage amount is small, the cooling operation may be performed excessively, resulting in “too cold” storage.
- the stored item maintains its temperature by its own heat capacity, so that the stored amount tends to be easily cooled. For this reason, in the conventional cooling control, the stored item becomes “too cold”, and the stored item cannot be cooled at an optimum temperature. Further, during this time, the refrigerator performs cooling operation using excess power consumption.
- the present invention solves the above-described conventional problems, and by storing the stored item at a target temperature regardless of the storage state in the warehouse, the stored item achieves high freshness, and the stored item “
- An object of the present invention is to provide a refrigerator that can prevent “too cold” and reduce power consumption.
- a refrigerator includes a refrigerator main body in which a storage chamber is formed, a cooling device that cools the storage chamber, and the storage chamber.
- the storage object estimation part which estimates the quantity or position of the stored goods, and the control part which controls cooling of the said storage chamber by the said cooling device according to the estimation result of the said storage object estimation part are provided.
- the refrigerator of the present invention detects the storage state in advance, and controls the operation state of the refrigerator based on the information, thereby storing the storage item at a target temperature regardless of the storage state in the warehouse. In addition to realizing high freshness, the stored item can be prevented from being “too cold” and the power consumption can be suppressed.
- FIG. 1 is a front view of the refrigerator according to Embodiment 1 of the present invention.
- 2 is a cross-sectional view taken along the line BB of FIG. 1 in Embodiment 1 of the present invention.
- FIG. 3 is a diagram illustrating operations performed by the light emitting unit and the light amount detecting unit according to Embodiment 1 of the present invention.
- FIG. 4 is a control block diagram of the refrigerator in the first embodiment of the present invention.
- FIG. 5A is a diagram illustrating a control operation in a transition period performed by the control unit according to Embodiment 1 of the present invention.
- FIG. 5B is a diagram illustrating a control operation in a transition period performed by the control unit according to Embodiment 1 of the present invention.
- FIG. 5A is a diagram illustrating a control operation in a transition period performed by the control unit according to Embodiment 1 of the present invention.
- FIG. 5B is a diagram illustrating a control operation in a transition period performed by the
- FIG. 5C is a diagram illustrating a control operation in a transition period performed by the control unit according to Embodiment 1 of the present invention.
- FIG. 6 is a flowchart for explaining the control operation in the transition period performed by the control unit according to Embodiment 1 of the present invention.
- FIG. 7A is a diagram illustrating a control operation in a stable period performed by the control unit according to Embodiment 1 of the present invention.
- FIG. 7B is a diagram illustrating a control operation in a stable period performed by the control unit according to Embodiment 1 of the present invention.
- FIG. 7C is a diagram illustrating a control operation in a stable period performed by the control unit according to Embodiment 1 of the present invention.
- FIG. 7A is a diagram illustrating a control operation in a stable period performed by the control unit according to Embodiment 1 of the present invention.
- FIG. 7B is a diagram illustrating a control operation in a stable period performed by the control unit according to Em
- FIG. 8 is a flowchart illustrating a control operation in a stable period performed by the control unit according to Embodiment 1 of the present invention.
- FIG. 9 is a control block diagram of the refrigerator in the second embodiment of the present invention.
- FIG. 10 is a diagram showing a configuration of the refrigerator in the third embodiment of the present invention.
- FIG. 11 is a diagram showing a configuration of the refrigerator in the third embodiment of the present invention.
- FIG. 12 is a front view of the refrigerator in the fourth embodiment of the present invention.
- FIG. 13 is a control block diagram of the refrigerator in the fourth embodiment of the present invention.
- FIG. 14 is a front view of a refrigerator compartment of a conventional refrigerator.
- a refrigerator estimates a refrigerator main body in which a storage chamber is formed inward, a cooling device for cooling the storage chamber, and the amount or position of stored items stored in the storage chamber.
- the storage object estimation part and the control part which controls cooling of the said storage chamber by the said cooling device according to the estimation result of the said storage object estimation part are provided.
- the refrigerator according to the second invention is preferably further provided with a light emitting unit including a light source for irradiating light to the stored items stored in the storage chamber, and disposed in the storage chamber and stored in the storage chamber.
- a light emitting unit including a light source for irradiating light to the stored items stored in the storage chamber, and disposed in the storage chamber and stored in the storage chamber.
- a stored light amount detection unit that detects the amount of light emitted by the light emitting unit via the stored item and the structure, and the stored item estimation unit, according to the detection result of the light amount by the light amount detection unit Estimate the amount or position of the contents.
- the light amount detection unit receives light emitted from a light source such as an LED, the amount or position of the stored item can be estimated with a simple configuration.
- the control unit selects an operation pattern according to an estimation result of the amount or position of the stored item in the stored item estimation unit, and is preset according to the operation pattern.
- the cooling device is controlled so that the inside temperature is set.
- the stored item can be stored under substantially the same storage conditions (internal temperature) regardless of the amount or position of the stored item.
- the refrigerator according to the fourth invention preferably further includes a door open / close detection unit that detects an open / closed state of the refrigerator door provided in front of the storage chamber, and the door open / close detection unit is provided on the refrigerator door.
- the light emitting unit, the light amount detecting unit, the stored item estimating unit, and the control unit start a series of operations.
- the refrigerator to be controlled on the basis of higher detection accuracy by detecting the amount of light in the absence of background light, that is, disturbance light.
- the stored items can be stored under substantially the same storage conditions, and a refrigerator with high freshness and power saving can be provided.
- the light emitting unit is illumination provided in the storage chamber.
- the light emitting unit includes a plurality of light sources, the plurality of light sources are sequentially turned on, and the light amount detection unit detects a light amount of light emitted by the light emitting unit. Then, the stored item estimation unit estimates the amount or position of the stored item according to the light amount detection result by the light amount detection unit.
- the refrigerator according to the seventh aspect of the invention preferably further includes a space detection unit that detects a free space in the storage space of the storage chamber in a non-contact manner, and the space detection unit has a space volume around at least the cold air discharge port. And the stored item estimation unit estimates the amount or position of the stored item according to the detection result of the space detection unit.
- the optimal food arrangement can be promoted against overloading of food or power increase due to food storage near the cold air outlet, and a refrigerator realizing energy saving operation can be provided.
- the space detection unit and the light emitting unit are arranged with a storage space for storing stored items therebetween.
- the light emitting unit is installed on the front side of the storage room, and the space detection unit is installed on the back side of the storage room.
- the refrigerator according to the tenth aspect of the present invention preferably further includes a recognition unit that displays information on an empty space in the storage space detected by the space detection unit on an outer surface of a door provided in front of the storage room.
- the recognizing unit displays a warning screen that informs the user that the power increasing operation is performed as information on the empty space.
- FIG. 1 is a front view of a refrigerator according to Embodiment 1 of the present invention
- FIG. 2 is a cross-sectional view taken along line BB of FIG. 1 in the same embodiment.
- the refrigerator 10 includes a refrigerator main body 11 that is a heat insulating box, and the refrigerator main body 11 includes an outer box mainly using a steel plate, an inner box formed of a resin such as ABS, and an outer box. It is a structure in which a heat insulating material is provided in the space between the box and the inner box, and it is insulated from the surroundings.
- the refrigerator main body 11 is thermally partitioned into a plurality of storage rooms.
- a refrigeration room 12 is provided at the top, and an ice making room 13 and a switching room 14 are provided side by side below the refrigeration room 12, and the ice making room 13 and the switching room are provided.
- a freezer compartment 15 is disposed below 14, and a vegetable compartment 16 is disposed at the bottom.
- the door is arrange
- an operation unit 17 is provided near the center of the refrigerator compartment door 12a of the refrigerator compartment 12 for setting the internal temperature of each compartment, ice making, and rapid cooling.
- a plurality of storage shelves 18 are provided in the refrigerator compartment 12, and some of the storage shelves 18 are configured to operate up and down.
- an illumination 19 In the refrigerator compartment 12, an illumination 19, a light emitting unit 20, and a light amount detecting unit 21 are provided.
- the illumination 19 is vertically arranged on the left wall surface and the right wall surface that are located in front of the depth of the interior of the refrigerator 10 in front of the door opening side in the refrigerator 10 and in front of the front end of the storage shelf 18. Arranged in the direction.
- the light emitting unit 20 is disposed adjacent to a position similar to the illumination 19 on the left and right wall surfaces of the refrigerator, and includes a light source that irradiates light to the stored items stored in the refrigerator compartment 12.
- the light quantity detection unit 21 is disposed at a rear position in the refrigerator compartment 12, and detects the amount of light emitted by the light emitting unit 20 through the storage items and structures stored in the refrigerator compartment 12.
- the light quantity detection part 21 positioned in the position irradiated by the light emission part 20 via the storage thing accommodated in the refrigerator compartment 12, and the structure inside a warehouse, it will be any position in a warehouse. You may arrange in.
- the high pressure side components of the refrigeration cycle such as the compressor 30 and the dryer for removing moisture are housed in the machine room formed in the rear region at the top of the refrigerator compartment 12.
- a cooling room for generating cold air is provided on the back surface of the freezing room 15.
- the cooling room includes a cooler and cold air cooled by the cooler 12, a switching room 14, an ice making room 13, and a vegetable room 16.
- a cooling fan that blows air to the freezer compartment 15 is disposed.
- a radiant heater, a drain pan, a drain tube evaporating dish, and the like are arranged to defrost frost and ice adhering to the cooler and its surroundings.
- the refrigerator compartment 12 is normally set at 1 ° C. to 5 ° C. at the lower limit of the temperature at which it is not frozen for refrigerated storage.
- the freezer compartment 15 is set in a freezing temperature zone, and is usually set at ⁇ 22 ° C. to ⁇ 15 ° C. for frozen storage, but in order to improve the frozen storage state, for example, ⁇ 30 ° C. It may be set at a low temperature of -25 ° C.
- the ice making chamber 13 is configured to make ice with water supplied from a water storage tank (not shown) in the refrigerator compartment 12 by an automatic ice maker (not shown) provided in the upper part of the room, and to store ice storage containers ( (Not shown).
- the switching chamber 14 is refrigerated in addition to the refrigeration temperature zone set at 1 ° C to 5 ° C, the vegetable temperature zone set at 2 ° C to 7 ° C, and the freezing temperature zone normally set at -22 ° C to -15 ° C.
- the temperature can be switched to a preset temperature range between the temperature range and the freezing temperature range.
- the switching chamber 14 is a storage chamber having an independent door arranged in parallel with the ice making chamber 13, and often has a drawer-type door.
- the switching chamber 14 is a storage room including the temperature range of refrigeration and freezing.
- the refrigeration is performed by the refrigerator compartment 12 and the vegetable compartment 16, and the freezing is performed by the freezer compartment 15.
- a storage room specialized for switching only the temperature zone in the middle of freezing may be used.
- the storage room fixed to refrigeration may be sufficient as the demand for frozen foods has increased in recent years, for example, frozen food.
- FIG. 3 is a diagram for explaining operations performed by the light emitting unit 20 and the light amount detecting unit 21 according to Embodiment 1 of the present invention.
- the light output from the light emitting units 20 arranged on the left and right wall surfaces of the refrigerator irradiates the refrigerator 33 and the stored item 33 stored in the refrigerator 12.
- a part of the light output from the light emitting unit 20 is incident on the light amount detecting unit 21 disposed in the refrigerator compartment 12.
- the light amount detection unit 21 since the light amount detection unit 21 is in the region B where the irradiation light 34a from any one of the light emitting units 20 is shielded, the light amount detection unit 21 detects and outputs the corresponding light amount. In addition, when the amount of the stored item 33 is large, the area A that is shielded together increases, and thus the amount of light detected by the light amount detector 21 decreases. In addition, when the storage amount is small, the area C in which any irradiation light 34a is not shielded increases, and thus the amount of light detected by the light amount detector 21 increases.
- the light quantity detection unit 21 detects the change in the light quantity due to the interposition of the stored item 33 and the difference in the amount or position of the stored item 33. Then, by discriminating the light quantity detection result based on a predetermined threshold set in advance, the amount (large or small) or the position of the stored item 33 in the warehouse can be classified. Details will be described later.
- the light emission part 20 can estimate the storage state with a simpler configuration without providing a new light source by combining with the illumination 19 normally provided in the refrigerator 10. That is, the amount or position of the stored item 33 may be estimated by using the illumination 19 provided in the refrigerator compartment 12 as the light emitting unit 20.
- FIG. 4 is a control block diagram of refrigerator 10 in the first embodiment of the present invention.
- the refrigerator 10 includes a stored item estimation unit 22 and a control unit 23 in addition to the light emitting unit 20 and the light amount detection unit 21 described above.
- the stored item estimation unit 22 estimates the amount or position of the stored item stored in the refrigerator compartment 12 and outputs the estimation result to the control unit 23. Specifically, the stored item estimation unit 22 estimates the amount or position of the stored item according to the light amount detection result by the light amount detection unit 21.
- the control unit 23 controls cooling of the refrigerator compartment 12 by the cooling device 35 provided in the refrigerator 10 for cooling the refrigerator compartment 12 according to the estimation result of the stored item estimation unit 22. Specifically, the control unit 23 selects an operation pattern in accordance with the estimation result of the amount or position of the stored item in the stored item estimation unit 22 so that the internal temperature set in advance corresponding to the operation pattern is obtained.
- the cooling device 35 is controlled.
- the cooling device 35 includes a compressor 30, a cooling fan 31, and a temperature compensation heater 32, and the control unit 23 automatically changes the operation of the device.
- the stored item estimating unit 22 estimates that the amount of stored item is small.
- the control unit 23 automatically enters a power saving operation such as a rotational speed suppression or an overcooling prevention operation of the compressor 30.
- the storage object estimation unit 22 estimates that the storage amount is large, and the control unit 23 causes the compressor to reach the set temperature within a predetermined time.
- the number of rotations of 30 is increased, and the normal operation having a higher number of rotations than the power saving operation is automatically entered.
- control unit 23 shuts off the air path that feeds cold air to each storage chamber by the opening / closing mechanism in the case of power saving operation, not the rotation speed of the compressor, and cool air to each storage chamber in the case of normal operation.
- the temperature of the air passage is controlled by controlling the air flow rate of the open air with an opening / closing mechanism.
- the storage item estimation unit 22 estimates the amount of storage item
- the control unit 23 controls the cooling device 35 according to the amount of storage item estimated by the storage item estimation unit 22.
- the stored item estimation unit 22 estimates the position of the stored item
- the control unit 23 controls the cooling device 35 in accordance with the position of the stored item estimated by the stored item estimation unit 22.
- FIGS. 5A to 5C are diagrams for explaining the control operation in the transition period performed by the control unit 23 according to Embodiment 1 of the present invention.
- the transition period is a period from when the temperature in the refrigerator 10 rises to the set temperature after the temperature in the refrigerator 10 is increased, such as immediately after the storage is turned on, after a long door opening or closing, or immediately after the defrosting operation. is there.
- the temperature fluctuation range in the warehouse during the transition period is in a state where the temperature fluctuates more than ⁇ 3 ° C. from the set temperature.
- FIG. 5A shows an operation of the control unit 23 that performs temperature control similar to the conventional case in the case of a standard storage amount (hereinafter, standard).
- 5B shows the operation of the control unit 23 when the storage amount is larger than the standard
- FIG. 5C shows the operation of the control unit 23 when the storage amount is smaller than the standard.
- the types of stored items are the same.
- the solid line indicates the detected temperature of the stored item in the present embodiment
- the broken line indicates the time dependency of the detected temperature of the stored item when conventional control is performed.
- K0 is a preset storage temperature of the stored item 33.
- the control unit 23 switches the operation state of the cooling device 35 based on the estimation result of the storage amount in the storage object estimation unit 22 when the storage amount is larger than the standard and when the storage amount is small.
- FIG. 5A shows a change in the temperature of stored items when the storage amount is a standard storage amount and the storage rate in the cabinet is about 50% ⁇ 10%. In this embodiment, control is performed based on this temperature change.
- the criteria for “standard / large / small” storage amount differ depending on the size, configuration, or control method of the refrigerator, and are not limited to those shown here.
- the detected light amount of the light amount detecting unit 21 decreases, and the stored item estimating unit 22 estimates that the stored amount in the warehouse is large due to the decrease in the detected light amount. To do.
- the control unit 23 since it takes time for the storage items to reach the set temperature, the control unit 23 reaches the set temperature within a predetermined time.
- the rotation speed of the compressor 30 is increased or the circulation amount of the cold air is increased, and the operation is automatically switched to the rapid cooling operation. Accordingly, the storage temperature can be reached in the same period as in the case of FIG. 5A without depending on the amount of the stored item 33, and the freshness of the stored item 33 can be maintained without depending on the amount of the stored item 33. Can do.
- the detection light amount of the light amount detection unit 21 increases, and the increase in the detection light amount causes the storage item estimation unit 22 to estimate that the storage amount in the warehouse is small.
- the control unit 23 automatically switches to the power saving operation by reducing the rotational speed of the compressor 30 or reducing the circulation amount of the cold air so as to reach the set temperature within a predetermined time.
- an energy saving effect can be obtained by slowing down the temperature behavior in the cabinet, and silence can be achieved, for example, by suppressing the rotation speed of the cooling fan 31.
- FIG. 6 is a flowchart for explaining the control operation in the transition period performed by the control unit 23 according to Embodiment 1 of the present invention.
- the control unit 23 determines whether or not it is a transition period from the internal temperature (step 102). If the control unit 23 determines that it is in the transition period (Y in step 102), it performs the following control.
- control unit 23 turns on the light emitting unit 20 to perform the stored item detection operation (step 103), and the light amount detection unit 21 detects the light amount attenuated by the stored item (step 104).
- the storage object estimation unit 22 compares the light amount detected by the light amount detection unit 21 with a predetermined threshold value to determine the storage amount level (step 105).
- the storage object estimation unit 22 determines whether or not the storage amount is large (step 106). If it is determined that the storage amount is large (Y in step 106), the control unit 23 controls the cooling device 35. Then, rapid operation is performed until the stored item reaches the set temperature (step 107).
- Step 108 determines whether or not the stored amount is small. If the stored item estimation unit 22 determines that the stored amount is small (Y in step 108), the control unit 23 controls the cooling device 35 to perform the power saving operation until the stored amount reaches the set temperature. (Step 109).
- step 108 If the stored item estimation unit 22 determines that the storage amount is not small (N in step 108), the control unit 23 determines that the storage amount is standard (step 110), and sets the cooling device 35 to the cooling unit 35. Control is performed to perform a normal cooling operation (step 111).
- FIG. 7A to FIG. 7C are diagrams for explaining the control operation in the stable period performed by the control unit 23 according to Embodiment 1 of the present invention.
- “Stable time” refers to a period during which the temperature of the stored item is kept constant by ON / OFF operation of the cooling operation after the temperature of the stored item reaches the set temperature after a transition period.
- the temperature in the stable chamber fluctuates within a range of about ⁇ 3 ° C.
- FIG. 7A shows an operation of the control unit 23 that performs temperature control similar to the conventional case in the case of a standard storage amount (hereinafter, standard).
- FIG. 7B shows the operation of the control unit 23 when the storage amount is larger than the standard
- FIG. 7C shows the operation of the control unit 23 when the storage amount is smaller than the standard.
- the cooling is performed while repeating the cooling period and the rest period with the period T.
- the detected light amount of the light amount detection unit 21 decreases, and the stored item estimation unit 22 estimates that the stored amount in the warehouse is large due to the decrease in the detected light amount.
- the stored items in a cooled state function to keep the inside temperature at a low temperature by their own heat capacity, so the average temperature K1 of the stored items is lower than the set temperature K0, which is so-called “too cold”. .
- control unit 23 controls the cooling device 35 so that the set temperature becomes K2 which is 1 to 2 ° C. higher than K0. Accordingly, the stored item is prevented from being too cold, and the temperature of the stored item is kept substantially equal to the set temperature K0, and the cooling operation is suppressed. Therefore, the power consumption can be reduced while maintaining the quality.
- the set temperature of K2 is increased by “K0 ⁇ K1” than K0.
- a temperature range of 1 to 2 ° C. is set as a preset temperature range as described above, a sudden temperature It becomes possible to prevent deterioration of the quality of stored items due to the rise.
- the detection light amount of the light amount detection unit 21 increases, and the increase in the detection light amount causes the storage object estimation unit 22 to estimate that the storage amount in the warehouse is small.
- the cooling period and the rest period are short, and the cycle T is shortened as compared with the standard storage, but the temperature of the stored item tends to be kept substantially equal to the set temperature.
- the control unit 23 performs control so that the cooling period and the idle period are the same as those in the normal operation, for example, by reducing the cooling amount and relaxing the cooling.
- the controller 23 As a means for the controller 23 to reduce the cooling amount, the rotational speed of the cooling fan 31 is reduced or stopped, the air volume is reduced, or the operating speed or operating rate of the compressor 30 is reduced. There is.
- FIG. 8 is a flowchart for explaining the control operation in the stable period performed by the control unit 23 according to Embodiment 1 of the present invention.
- the control unit 23 determines whether or not it is a stable period from the internal temperature (step 202). Then, when the control unit 23 determines that it is a stable period (Y in Step 202), it performs the following control.
- control unit 23 turns on the light emitting unit 20 to perform the stored item detection operation (step 203), and the light amount detection unit 21 detects the light amount attenuated by the stored item (step 204).
- the storage object estimation unit 22 compares the light amount detected by the light amount detection unit 21 with a predetermined threshold value to determine the storage amount level (step 205).
- the storage object estimation unit 22 determines whether or not the storage amount is large (step 206). If it is determined that the storage amount is large (Y in step 206), the control unit 23 controls the cooling device 35. Then, the set temperature is raised to K2, which is a temperature higher than K0 (step 207).
- the stored item estimation unit 22 determines that the stored amount is not large (N in Step 206), it determines that the stored amount is standard or small (Step 208). Then, the control unit 23 controls the cooling device 35 to perform a normal cooling operation or a power saving operation for reducing the cooling amount (step 209).
- the refrigerator main body 11, the cooling device 35 that cools the inside of the refrigerator 10, and the refrigerator 10 are arranged at predetermined positions in the refrigerator 10.
- the light emitting unit 20 including at least one light source that irradiates the stored items 33 stored in the refrigerator 10 and the light emitting unit 20 is disposed in the refrigerator 10 and is irradiated by the light emitting unit 20 through the stored items 33 and the structures in the refrigerator 10.
- the amount of storage 33 of the stored item estimation unit 22 for estimating the amount or position of the stored item 33 based on the detection result of the light amount detection unit 21; Or the control part 23 which controls the cooling device 35 according to the estimation result of a position and controls internal temperature to predetermined
- the amount or position of the stored item 33 is estimated from the detection result of the light amount detection unit 21, and the refrigerator 10 is adaptively controlled accordingly, so that the amount is substantially the same regardless of the amount or position of the stored item 33.
- the storage items 33 can be stored under the storage conditions, and the refrigerator 10 having high freshness and power saving can be provided.
- the stored item 33 by storing the stored item 33 at a target temperature regardless of the storage condition in the storage, it is possible to realize high freshness of the stored item 33 and to prevent the stored item 33 from being “too cold”. Thus, power consumption can be suppressed.
- the light quantity detection part 21 receives the light irradiated from light sources, such as LED, the estimation of the quantity or position of the stored article 33 is realizable with a simple structure.
- the stored item estimation unit 22 is provided in the refrigerator compartment 12, but may be provided in the ice making chamber 13, the switching chamber 14, the freezer compartment 15, or the vegetable compartment 16.
- Embodiment 2 Next, the refrigerator in Embodiment 2 of this invention is demonstrated.
- FIG. 9 is a control block diagram of refrigerator 10a according to Embodiment 2 of the present invention.
- the refrigerator 10a in the second embodiment includes a door opening / closing detection unit 25 that detects the open / closed state of the refrigerator door in addition to the components of the refrigerator 10 in the first embodiment shown in FIG. Is further provided.
- the door opening / closing detection unit 25 detects the open / closed state of the refrigerator door provided in the front of the storage room. That is, the door open / close detection unit 25 detects the open / closed state of the refrigerator compartment door 12a.
- the light emission part 20, the light quantity detection part 21, the stored item estimation part 22, and the control part 23 start a series of operation
- the open / closed state of the refrigerator compartment door 12a is detected, and when the door is in the closed state, the light emitting unit 20 and the light amount detecting unit 21 are operated, whereby the influence of background light can be easily avoided.
- the user when the amount or position of stored items changes, the user must first open the door, store or take out food, and finally close the door. It is only necessary to detect the amount or position of an object. That is, by providing the door opening / closing detection unit 25, a minimum detection operation is sufficient, and power consumption used by the light emitting unit 20 and the like can be reduced.
- the door open / close detection is associated with the interior lighting, and the interior lighting is turned on / off according to the door opening / closing, and the door open / closed state detection function in such control is shared.
- the door open / closed state detection function in such control is shared.
- Embodiment 3 Next, the refrigerator in Embodiment 3 of this invention is demonstrated.
- FIGS. 10 and 11 are diagrams showing a configuration of the refrigerator 10b according to the third embodiment.
- the detailed description of the parts to which the same configuration and technical idea can be applied in the configuration of the refrigerator in the first and second embodiments is omitted.
- the configuration described in the first and second embodiments can be implemented in combination with the third embodiment.
- the refrigerator 10b includes an illumination 19 having a plurality of light sources 20a to 20d as a light emitting unit. This makes it possible to configure the light emitting unit with a simple configuration without providing a special light emitting unit.
- the illumination 19 is vertically arranged on the left wall surface and the right wall surface that are located in front of half of the depth dimension in the refrigerator and in front of the front end of the storage shelf 18 when viewed from the front side of the door opening side in the refrigerator. Is arranged. Further, the illumination 19 is provided with light sources 20a to 20d arranged at equal intervals in the vertical direction, and can uniformly irradiate from the upper part to the lower part in the refrigerator compartment 12.
- the light quantity detectors 21a to 21d are arranged at the rear position in the refrigerator compartment 12, and these light quantity detectors 21a to 21d are mainly used for the light quantity of the irradiation light 34b in which the irradiation light 34a is shielded by the storage object 33. Detect attenuation.
- the light quantity detection part 21e is arrange
- the illumination 19 sequentially turns on the plurality of light sources 20a to 20d
- the light amount detection unit 21 detects the amount of light emitted by the illumination 19
- the stored item estimation unit 22 determines the amount of light by the light amount detection unit 21.
- the amount or position of the storage amount is estimated according to the detection result. As a result, it is possible to perform detailed storage object estimation by sequentially turning on a plurality of light sources. For this reason, even in a vast storage room, it is possible to detect a stored item in detail, so that the accuracy of estimating the amount or position of the stored item is improved.
- the light amount detection units 21a to 21e may be devices that detect the light amount, chromaticity sensors that can identify RGB in addition to illuminance, and the like.
- the amount or position of the stored item can be accurately obtained. Can be detected.
- the light source 20e on the top surface is installed on the near side of the inside depth dimension of the refrigerator as viewed from the door opening side in the refrigerator compartment 12.
- the light source 20e is arranged on the door side from the front end of the storage shelf 18 and on the back side of the door shelves 24a to 24c attached to the refrigerator compartment door 12a. For this reason, in this arrangement, the light emitted from the light source 20e on the top surface toward the light amount detection unit 21f is not shielded by the storage items on the storage rack 18 and the door racks 24a to 24c.
- the lower light amount detection unit 21f is arranged on the door side from the front end of the storage shelf 18 and further on the back side than the door shelves 24a to 24c attached to the refrigerator compartment door 12a. It is arranged at a position lower than the lower storage shelf 18.
- the installation surface of the light quantity detection unit 21f may be any of the side surface or the lower surface in the warehouse. Further, the positional relationship between the light source 20e on the top surface and the light amount detection unit 21f below may be reversed. Moreover, you may provide a some light quantity detection part.
- the light reaches the storage rack 18 and the door racks 24a to 24c, so the amount or position of the stored items can be accurately detected. Can do.
- a storage room that is long in the height direction such as a refrigerated room
- light from the light source 20e on the top surface is difficult to reach the storage items below, so the lower light emitting part such as the light source 20d is also used, and the interior is evenly distributed. Irradiation is desirable.
- the light quantity detectors 21a to 21f are disposed at any position in the storage as long as they are disposed at the positions irradiated by the light sources 20a to 20e via the stored items and the structures inside the storage. It does not matter. In addition, when high accuracy is not required for the estimation of the amount or position of stored items, it is not necessary to install a plurality of items, and only one may be used.
- Embodiment 4 Next, the refrigerator in Embodiment 4 of this invention is demonstrated.
- FIG. 12 is a front view of refrigerator 10c according to Embodiment 4 of the present invention.
- a refrigerator 10c includes a refrigerator main body 11 including an inner box 11a and an outer box 11b, and a refrigerator room 12, an ice making room 13, a freezer in an inner box 11a provided via a heat insulating wall.
- a room 15 and a vegetable room 16 are provided, and a switching room 14 that can switch the room to multiple temperatures is provided on the side of the ice making room 13.
- the refrigerating room 12 having the highest use frequency of storage and storage and having a large storage capacity has its front opening closed by a refrigerating room door 12a which is a double door revolving door pivotally supported by hinges on both sides, and an ice making room 13 and a switching room. 14, the vegetable compartment 16 and the freezer compartment 15 are each provided with a drawer-type door.
- the refrigerating room 12 is vertically divided into a room maintained at a refrigerating temperature by a plurality of storage shelves 18a to 18c provided at appropriate intervals.
- a water supply tank for supplying ice-making water to the refrigerating room 12 and a chilled temperature are provided at the bottom of the refrigerating room 12.
- a low temperature chamber 12b is provided.
- the upper space of the storage shelves 18a to 18c is a storage space for storing stored items such as food, and in the present embodiment, the storage for storing stored items in the storage space formed in the uppermost stage.
- a shelf 18a for placing storage items to be stored in the second storage space from the top
- a storage shelf 18c for placing storage items to be stored in the storage space immediately below the storage shelf 18b.
- a water supply tank and a low temperature chamber 12b that holds the chilled temperature are arranged.
- the refrigerating room 12 is provided with an illumination 19 in which a plurality of LEDs are incorporated at equal intervals in the vertical direction on the front side of the left and right walls on the side surface of the storage room.
- a space detection unit 26 is provided.
- the space detection unit 26 has the same function as the light amount detection unit 21 in the first to third embodiments.
- a space serving as a light amount detection means is provided above the storage shelf 18a on which storage items to be stored in the storage space formed in the uppermost stage are placed and on the back wall below the top box 11a.
- a detection unit 26a is provided.
- a space detection unit 26b serving as a light amount detection unit is provided on the back wall above the storage shelf 18b on which storage items to be stored in the second storage space from the top are placed and below the storage shelf 18a.
- the storage item 33 is placed on the storage shelf 18b. That is, the space detection unit 26b and the illumination 19 are arranged with a storage space for storing the storage items 33 therebetween.
- the cold air discharge ports 4 are respectively provided above the space detection unit 26. That is, the cool air discharge port 4a is provided in the vicinity of the upper side of the upper space detection unit 26a, and the cool air discharge port 4b is provided in the vicinity of the upper side of the lower space detection unit 26b.
- FIG. 13 is a control block diagram of the refrigerator 10c according to the fourth embodiment.
- the refrigerator 10c in the fourth embodiment includes a space detection unit 26 instead of the light amount detection unit 21 of the refrigerator 10 in the first embodiment illustrated in FIG. Yes.
- the space detection unit 26 detects an empty space in the storage space of the refrigerator compartment 12 without contact. Specifically, the space detection unit 26 detects at least the periphery of the cool air discharge port 4 by detecting the amount of light irradiated by the illumination 19 through the storage object 33 and the structure stored in the refrigerator compartment 12. Detect the spatial volume of.
- the space detection unit 26 includes a space detection unit 26a and a space detection unit 26b, and the space detection unit 26a has at least the size of the space around the cool air discharge port 4a.
- the space detection unit 26b detects at least the size of the space around the cool air discharge port 4b.
- the stored item estimation unit 22 estimates the amount or position of the stored item 33 according to the detection result by the space detection unit 26.
- the recognition unit 27 displays information on the empty space in the storage space detected by the space detection unit 26 on the outer surface of the door provided on the front surface of the refrigerator compartment 12. For example, the recognizing unit 27 displays a warning screen that informs the user that the power increasing operation is performed as information on the empty space.
- the illumination 19 is turned on with the door 108 closed.
- the light from the illumination 19 reaches the space detection unit 26a that detects the illuminance of the uppermost storage space via the air.
- a part of the light from the illumination 19 passes between the storage items 33 and reaches the space detection unit 26b that detects the illuminance of the second storage space.
- the other part of the light from the illumination 19 is absorbed by the storage object 33 in the storage object 33 and a part of the light is reflected and scattered, so that the storage object 33 opposite to the illumination 19 of the storage object 33, that is, the shadow storage object 33.
- the back side of the camera is dark with less light.
- the amount of light is detected by the space detectors 26a and 26b in this way, and the fact that there is a space that can be stored in the upper stage above the storage shelf 18a with respect to the middle stage below the storage shelf 18a is refrigerated as a door. It displays on the display part which is not shown in the outer surface of the chamber door 12a. That is, the recognizing unit 27 performs display on the outer surface of the refrigeration room door 12a provided on the front side of the refrigeration room 12 that is a storage room provided with the space detection units 26a and 26b. Inform the condition of the contents in the box.
- the stored items can be placed and the refrigerator compartment door 12a can be quickly closed.
- step S when the stored item 33 is stored in front of the cold air discharge port 4 b or when the stored item 33 is too packed, that is, the space detection unit 26 in the vicinity of the cold air discharge port 4.
- the recognition unit 27 performs a power increase operation because the storage space detected by the corresponding space detection unit 26 is excessively packed in the display unit on the outer surface of the refrigerator compartment door 12a.
- a warning screen is displayed to notify you.
- the air flow resistance of the cold air is reduced, and the amount of the cold air circulated per unit time is reduced and cooling is performed. It takes a long time.
- the amount of cool air circulation decreases, the air volume of the evaporator decreases and the amount of heat exchange decreases, leading to a decrease in the evaporation temperature, and the compressor input also increases due to the expansion of the high and low pressure differential pressure in the refrigeration cycle. For this reason, if it is going to maintain cooling time, the rotation speed of the fan which circulates cold air must be increased, or rotation of a compressor must be increased, and this also increases electric power.
- the opening time of the refrigerator compartment door 12a is shortened, the high temperature outside air flowing from the refrigerator compartment door 12a can be suppressed, energy saving is achieved, and the temporary temperature rise in the refrigerator compartment 12 is also suppressed. Therefore, the temperature rise of the stored items is also suppressed, and quality deterioration can be reduced.
- the user can be warned by encouraging energy saving operation by warning the user by the cognitive unit 27 that the power increase operation will be started.
- the refrigerator according to the present invention can be implemented and applied to control for switching the operation mode to a power saving operation or the like by providing a detection function of stored items in a home or commercial refrigerator.
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Abstract
Description
以下、本発明の実施の形態1について、図1から図8に基づいて説明する。
次に、本発明の実施の形態2における冷蔵庫について、説明する。
次に、本発明の実施の形態3における冷蔵庫について、説明する。
次に、本発明の実施の形態4における冷蔵庫について、説明する。
4、4a、4b 冷気吐出口
11 冷蔵庫本体
11a 内箱
11b 外箱
12、101 冷蔵室
12a 冷蔵室ドア
12b 低温室
13 製氷室
14 切替室
15 冷凍室
16 野菜室
17 操作部
18、18a、18b、18c 収納棚
19 照明
20 発光部
20a、20b、20c、20d、20e 光源
21、21a、21b、21c、21d、21e、21f 光量検知部
22 収納物推定部
23 制御部
24a、24b、24c ドア棚
25 ドア開閉検知部
26、26a、26b 空間検知部
27 認知部
30 圧縮機
31 冷却ファン
32 温度補償ヒータ
33 収納物
34a、34b、34c 照射光
35 冷却装置
102 冷気吐出装置
Claims (11)
- 内方に貯蔵室が形成される冷蔵庫本体と、
前記貯蔵室を冷却する冷却装置と、
前記貯蔵室の内部に収納された収納物の量もしくは位置を推定する収納物推定部と、
前記収納物推定部の推定結果に応じて、前記冷却装置による前記貯蔵室の冷却を制御する制御部と
を備える冷蔵庫。 - さらに、
前記貯蔵室に収納された収納物に光を照射する光源を備える発光部と、
前記貯蔵室の内部に配置され、前記貯蔵室に収納された収納物および構造物を介して、前記発光部により照射された光の光量を検知する光量検知部とを備え、
前記収納物推定部は、前記光量検知部による光量の検知結果に応じて前記収納物の量もしくは位置を推定する
請求項1に記載の冷蔵庫。 - 前記制御部は、前記収納物推定部の収納物の量もしくは位置の推定結果に応じて運転パターンを選択し、前記運転パターンに対応して予め設定された庫内温度となるよう冷却装置を制御する
請求項1または2に記載の冷蔵庫。 - さらに、
前記貯蔵室の前面に備えられた冷蔵庫ドアの開および閉状態を検知するドア開閉検知部を備え、
前記ドア開閉検知部が前記冷蔵庫ドアの閉状態を検知している期間内において、前記発光部、前記光量検知部、前記収納物推定部および前記制御部は、一連の動作を開始する
請求項2または3に記載の冷蔵庫。 - 前記発光部は、前記貯蔵室内に設けられた照明である
請求項2~4のいずれか1項に記載の冷蔵庫。 - 前記発光部は、複数の光源を備え、前記複数の光源を順次点灯させ、
前記光量検知部は、前記発光部により照射された光の光量を検知し、
前記収納物推定部は、前記光量検知部による光量の検知結果に応じて前記収納物の量もしくは位置を推定する
請求項2~5のいずれか1項に記載の冷蔵庫。 - さらに、
前記貯蔵室の収納空間における空き空間を非接触で検知する空間検知部を備え、
前記空間検知部は、少なくとも冷気吐出口の周辺の空間容積を検知し、
前記収納物推定部は、前記空間検知部による検知結果に応じて前記収納物の量もしくは位置を推定する
請求項1~6のいずれか1項に記載の冷蔵庫。 - 前記空間検知部と前記発光部とは、間に収納物を収納する収納空間を挟んで配置される
請求項7に記載の冷蔵庫。 - 前記発光部は、前記貯蔵室の前側に設置され、
前記空間検知部は、前記貯蔵室の背面側に設置される
請求項7または8に記載の冷蔵庫。 - さらに、
前記空間検知部で検知した収納空間における空き空間の情報を、前記貯蔵室の前面に備えられた扉の外面に表示させる認知部を備える
請求項7~9のいずれか1項に記載の冷蔵庫。 - 前記認知部は、前記空き空間の情報として、ユーザに増電運転であることを知らせる警告画面を表示させる
請求項10に記載の冷蔵庫。
Priority Applications (4)
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CN201180009429.1A CN102770728B (zh) | 2010-03-09 | 2011-03-09 | 冷藏库 |
EP11753046.9A EP2525171B1 (en) | 2010-03-09 | 2011-03-09 | Refrigerator |
JP2012504332A JP5789779B2 (ja) | 2010-03-09 | 2011-03-09 | 冷蔵庫 |
BR112012020452A BR112012020452B8 (pt) | 2010-03-09 | 2011-03-09 | refrigerador. |
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JP2010-051407 | 2010-03-09 | ||
JP2010051407 | 2010-03-09 | ||
JP2011038069 | 2011-02-24 | ||
JP2011-038069 | 2011-02-24 |
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EP (1) | EP2525171B1 (ja) |
JP (1) | JP5789779B2 (ja) |
CN (1) | CN102770728B (ja) |
BR (1) | BR112012020452B8 (ja) |
WO (1) | WO2011111382A1 (ja) |
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- 2011-03-09 WO PCT/JP2011/001375 patent/WO2011111382A1/ja active Application Filing
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Also Published As
Publication number | Publication date |
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EP2525171A4 (en) | 2014-02-19 |
CN102770728B (zh) | 2015-07-08 |
BR112012020452B8 (pt) | 2020-10-27 |
JP5789779B2 (ja) | 2015-10-07 |
BR112012020452B1 (pt) | 2020-07-21 |
BR112012020452A2 (pt) | 2016-05-17 |
JPWO2011111382A1 (ja) | 2013-06-27 |
CN102770728A (zh) | 2012-11-07 |
EP2525171B1 (en) | 2016-05-18 |
EP2525171A1 (en) | 2012-11-21 |
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