JP2023034788A - refrigerator - Google Patents

Abstract

To provide a refrigerator which can accurately detect a temperature in a small refrigeration room with a small refrigeration room temperature measuring part.SOLUTION: A refrigerator 10 includes: a small refrigeration room 131; a cooling chamber 115 in which air blown into a refrigeration room 13 is cooled by a cooler 116; a blower fan 24 which blows air from the cooling chamber 115 to the refrigeration room 13; an air outlet 33 through which air is blown from the cooling chamber 115 to the refrigeration room 13; and a small refrigeration room temperature measuring part 26 which measures a temperature in the small refrigeration room 131. The small refrigeration room temperature measuring part 26 is disposed above an upper surface of the small refrigeration room 131.SELECTED DRAWING: Figure 4A

Description

TECHNICAL FIELD The present invention relates to a refrigerator, and more particularly to a refrigerator having a temperature measuring unit for detecting the internal temperature of a small freezer compartment.

2. Description of the Related Art Conventionally, there has been known a refrigerator that detects the internal temperature of a small freezer compartment as described in Patent Document 1.

Specifically, in the refrigerator described in Patent Literature 1, a thermistor for measuring the temperature of the freezer compartment is provided at a position recessed above the lower surface of the vertical partition that separates the small freezer compartments. Also, the rapid freezing function is executed based on the output from this thermistor. By doing so, it is possible to automatically perform rapid freezing when the food is accommodated while suppressing deterioration of the insulation performance between the freezer compartment and the refrigerator compartment.

Japanese Patent No. 6608773

However, the refrigerator described in Patent Document 1 described above has room for improvement from the viewpoint of accurately detecting the internal temperature of the small freezer compartment.

Specifically, in the refrigerator described in Patent Literature 1, a thermistor that detects temperature is arranged near the cool air outlet. Therefore, there is a problem that cold air is blown out from the air outlet toward the thermistor, and the temperature may not be accurately detected by the thermistor.

Moreover, when the quick freezing function is executed based on the output of the thermistor, there is a problem that the quick freezing function malfunctions if the thermistor cannot accurately detect the internal temperature of the small freezer compartment.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a refrigerator capable of accurately detecting the internal temperature of a small freezer compartment by means of a small freezer compartment temperature measuring section.

A refrigerator according to the present invention comprises: a heat insulating box body having an outer box, an inner box, and a heat insulating material disposed between the outer box and the inner box; a small freezer compartment defined inside the freezer compartment; a cooling compartment in which the air blown into the freezer compartment is cooled by a cooler; and a cooler that blows the air from the cooling compartment to the freezer compartment. a blower fan, an outlet through which the air is blown from the cooling chamber to the freezing chamber, and a small freezing chamber temperature measuring unit for measuring the temperature inside the small freezing chamber, wherein the temperature of the small freezing chamber The measurement unit is arranged above the upper surface of the small freezer compartment.

Moreover, in the refrigerator of the present invention, the small freezer compartment temperature measurement unit and the blower outlet are arranged with a shift in the width direction.

Further, in the refrigerator of the present invention, the small freezer compartment temperature measurement unit has a temperature sensor unit for detecting the temperature of the small freezer compartment, and a sensor covering unit surrounding the temperature sensor unit. It is characterized in that the sensor covering portion faces the small freezer compartment through an opening of the inner box whose upper surface is partially opened.

In addition, the refrigerator of the present invention further comprises a small freezer compartment container arranged so as to be able to be pulled out in the front-rear direction, and a casing portion attached to the upper surface of the inner box, wherein the casing portion includes an upper surface portion and the upper surface. a rail portion that extends downward from the width direction end side of the portion and supports the small freezer compartment container so as to be slidable in the front-rear direction; The small freezer compartment is a space surrounded by the small freezer compartment container and the casing, and the sensor cover faces the small freezer compartment through the casing opening.

Further, the refrigerator of the present invention further comprises an arithmetic control unit, and the arithmetic control unit measures the frozen items stored in the small freezer compartment based on the output of the small freezer compartment temperature measuring unit. It is characterized by enhancing the ability to cool.

Further, the refrigerator of the present invention further comprises a refrigerating compartment and a cooling circuit capable of cooling the refrigerating compartment and the freezing compartment individually or simultaneously, wherein the arithmetic control unit controls opening and closing operations of the door. When it is detected, the cooling of the refrigerator compartment is stopped and the cooling circuit is switched to cool only the freezer compartment.

A refrigerator according to the present invention comprises: a heat insulating box body having an outer box, an inner box, and a heat insulating material disposed between the outer box and the inner box; a small freezer compartment defined inside the freezer compartment; a cooling compartment in which the air blown into the freezer compartment is cooled by a cooler; and a cooler that blows the air from the cooling compartment to the freezer compartment. a blower fan, an outlet through which the air is blown from the cooling chamber to the freezing chamber, and a small freezing chamber temperature measuring unit for measuring the temperature inside the small freezing chamber, wherein the temperature of the small freezing chamber The measurement unit is arranged above the upper surface of the small freezer compartment. According to the refrigerator of the present invention, by arranging the small freezer compartment temperature measurement part above the upper surface of the small freezer compartment, the air blown out from the air outlet directly reaches the small freezer compartment temperature measurement part. Since the air cannot be sprayed, the internal temperature of the small freezer compartment can be accurately detected by the small freezer compartment temperature measuring section.

Moreover, in the refrigerator of the present invention, the small freezer compartment temperature measurement unit and the blower outlet are arranged with a shift in the width direction. According to the refrigerator of the present invention, by arranging the small freezer compartment temperature measuring part and the air outlet with a gap in the width direction, the air blown out from the air outlet is further moved away from the small freezer compartment temperature measuring part, The temperature inside the small freezer compartment can be detected more accurately by the freezer compartment temperature measuring section.

Further, in the refrigerator of the present invention, the small freezer compartment temperature measurement unit has a temperature sensor unit for detecting the temperature of the small freezer compartment, and a sensor covering unit surrounding the temperature sensor unit. It is characterized in that the sensor covering portion faces the small freezer compartment through an opening of the inner box whose upper surface is partially opened. According to the refrigerator of the present invention, the temperature sensor can be protected by the sensor covering by facing the small freezer compartment from the opening of the inner box.

In addition, the refrigerator of the present invention further comprises a small freezer compartment container arranged so as to be able to be pulled out in the front-rear direction, and a casing portion attached to the upper surface of the inner box, wherein the casing portion includes an upper surface portion and the upper surface. a rail portion that extends downward from the width direction end side of the portion and supports the small freezer compartment container so as to be slidable in the front-rear direction; The small freezer compartment is a space surrounded by the small freezer compartment container and the casing, and the sensor cover faces the small freezer compartment through the casing opening. According to the refrigerator of the present invention, the sensor covering portion faces the small freezer compartment through the opening of the casing, so that when the container of the small freezer compartment is moved in the front-rear direction in order to take in or take out the stored goods, the stored goods are prevented from moving. Contact with the temperature sensor can be prevented.

Further, the refrigerator of the present invention further comprises an arithmetic control unit, and the arithmetic control unit measures the frozen items stored in the small freezer compartment based on the output of the small freezer compartment temperature measuring unit. It is characterized by enhancing the ability to cool. According to the refrigerator of the present invention, by accurately detecting the internal temperature of the small freezer compartment by the small freezer compartment temperature measuring unit, it is possible to accurately determine whether the object to be frozen is stored inside the small freezer compartment, It can prevent the automatic quick freezing function from malfunctioning.

Further, the refrigerator of the present invention further comprises a refrigerating compartment and a cooling circuit capable of cooling the refrigerating compartment and the freezing compartment individually or simultaneously, wherein the arithmetic control unit controls opening and closing operations of the door. When it is detected, the cooling of the refrigerator compartment is stopped and the cooling circuit is switched to cool only the freezer compartment. Therefore, according to the present invention, even in a refrigerator in which the refrigerating compartment and the freezing compartment are individually cooled by a cooling circuit, it is possible to satisfactorily detect that the object to be frozen is stored in the small freezing compartment. can be effectively frozen.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows the external appearance of the refrigerator which concerns on embodiment of this invention. 1 is a front view showing the appearance of a refrigerator according to an embodiment of the present invention with its heat insulating door opened; FIG. It is a side cross-sectional view showing the internal configuration of the refrigerator according to the embodiment of the present invention. It is a side cross-sectional view partially showing the internal configuration of the refrigerator according to the embodiment of the present invention. FIG. 2 is a side cross-sectional view showing a small freezer compartment temperature measuring unit and its vicinity in the refrigerator according to the embodiment of the present invention. FIG. 3 is a perspective view showing a small freezer compartment temperature measuring unit in the refrigerator according to the embodiment of the present invention. 1 is a perspective view showing an inner box forming a freezer compartment in a refrigerator according to an embodiment of the present invention; FIG. 1 is an exploded perspective view showing an inner box forming a freezer compartment in a refrigerator according to an embodiment of the present invention; FIG. 1 is a front view showing a small freezer compartment and its vicinity in a refrigerator according to an embodiment of the present invention; FIG.

Hereinafter, refrigerator 10 concerning an embodiment of the present invention is explained in detail based on a drawing. In the description of the present embodiment, in principle, the same reference numerals are used for the same members, and repeated descriptions are omitted. Further, in the following description, each direction of up, down, front, back, left, and right is used, but left and right are left and right when the refrigerator 10 is viewed from the front.

FIG. 1 is a perspective view of a refrigerator 10 according to an embodiment of the present invention as seen from the front left side. Refrigerator 10 has heat insulating box 11 and a storage room formed inside heat insulating box 11 . The refrigerator 10 has a quick freezing function, as will be described later.

The refrigerator 10 has a refrigerating compartment 12 and a freezing compartment 13 as storage compartments from above. A front opening of the refrigerator compartment 12 is closed by a rotary heat insulation door 18 and a heat insulation door 19 . A front opening of the freezer compartment 13 is closed with a heat insulating door 20 and a heat insulating door 21 . The heat insulating door 18, the heat insulating door 19, the heat insulating door 20, and the heat insulating door 21 are rotary doors, and can rotate about the left-right direction outer end portion as the center of rotation.

FIG. 2 is a front view showing refrigerator 10 with heat insulating door 18, heat insulating door 19, heat insulating door 20, and heat insulating door 21 in an open state.

As described above, the refrigerating compartment 12 and the freezing compartment 13 are formed inside the heat insulating box 11 as storage compartments.

The refrigerating compartment 12 is a storage compartment that cools stored items to be refrigerated to a refrigerating temperature range, and the internal temperature of the refrigerating compartment 12 is cooled to a temperature range of, for example, 2° C. or more and 5° C. or less. Storage pockets 17 are arranged on the inner side surfaces of the heat insulating door 18 and the heat insulating door 19 that close the refrigerator compartment 12 .

The freezer compartment 13 is a storage compartment that cools the contained object to be frozen 16 to a freezing temperature zone, and the internal temperature thereof is cooled to a temperature zone of -20°C or higher and -18°C or lower, for example. A plurality of storage containers 31 are stored in the freezer compartment 13 . Here, six storage containers 31 are arranged in a matrix. Each storage container 31 is a substantially box-shaped resin container with an open upper surface, and can be pulled out in the front-rear direction.

Inside the freezer compartment 13, a small freezer compartment 131 is formed in the vicinity of the upper end portion of the storage container 31 arranged at the right upper end. The small freezer compartment 131 is a quick freezer compartment for quickly freezing perishable foods such as meat and fish. Details of the small freezer compartment 131 will be described later with reference to FIG. 3 and the like. The small freezer compartment 131 is also called a quick freezer corner.

FIG. 3 is a side sectional view of refrigerator 10. As shown in FIG. In FIG. 3, the flow of cool air inside the refrigerator 10 is indicated by dotted arrows.

The heat insulating box body 11 is composed of an outer box 111 made of steel plate bent into a predetermined shape, an inner box 112 made of a synthetic resin plate and arranged inside the outer box 111 at a distance from the outer box 111 , the outer box 111 and the inner box 112 . and a heat insulating material 113 filled between them.

The storage compartment inside the heat insulating box 11 is divided into the refrigerator compartment 12 and the freezer compartment 13 from above as described above. The refrigerator compartment 12 and the freezer compartment 13 are separated by a heat insulating wall 34 . The heat insulation wall 34 has a heat insulation structure similar to that of the heat insulation box 11 .

The interior of the refrigerator compartment 12 is vertically partitioned by a plurality of storage shelves 15 .

A cooling chamber 115 is formed on the far side of the freezing chamber 13 . Inside the cooling chamber 115, an evaporator 116, which is a cooler, is arranged. A machine room 14 is defined behind the lower end of the refrigerator 10 , and a compressor 22 is arranged in the machine room 14 . Evaporator 116 and compressor 22 together with a condenser and expansion means not shown here form a vapor compression refrigeration cycle. By operating the vapor compression refrigeration cycle, the cold air inside the cooling chamber 115 is cooled by the evaporator 116, and this cold air is blown into each storage compartment, so that the internal temperature of each storage compartment is kept within a predetermined cooling temperature range. It is said that

A blower fan 24 is arranged above the evaporator 116 inside the cooling chamber 115 . Blower fan 24 is an axial blower or a centrifugal blower, and blows cold air inside evaporator 116 cooled by evaporator 116 toward refrigerator compartment 12 and freezer compartment 13 .

A defrosting heater 117 is arranged inside the cooling chamber 115 and below the evaporator 116 . As the vapor compression refrigeration cycle operates, thick frost forms on the surface of the evaporator 116 . When this happens, the later-described arithmetic control unit stops the compressor 22, closes the cooling chamber 115, and energizes the defrosting heater 117 to heat it, thereby performing a defrosting operation for melting and removing the frost.

A main air passage 114 is formed on the front side of the cooling chamber 115 . A refrigerating compartment air passage 28 is formed upward from the main air passage 114 . A refrigerator compartment damper 29 is attached to the refrigerator compartment air passage 28 . A blowout port 23 that is an opening for blowing cold air to the refrigerator compartment 12 is formed in the refrigerator compartment air passage 28 .

The air inside the cooling chamber 115 that has been cooled by the evaporator 116 is blown toward the main air passage 114 by the blower fan 24 and then to the freezer compartment 13 to cool the freezer compartment 13 to a predetermined freezing temperature zone. do. The air that has cooled the freezer compartment 13 is returned to the cooling compartment 115 via a return air passage (not shown). Also, part of the air blown by the blower fan 24 is blown to the refrigerator compartment 12 via the refrigerator compartment damper 29, the refrigerator compartment air passage 28, and the outlet 23, thereby cooling the refrigerator compartment 12 to a predetermined refrigerator temperature zone. do. The air that has cooled the refrigerator compartment 12 is returned to the cooling compartment 115 via a return air passage (not shown).

Small freezer compartment 131 is formed at the top of freezer compartment 13 . The small freezer compartment 131 is a portion surrounded by the small freezer compartment container 32 . The small freezer compartment container 32 is a resin container with an open top, and is arranged so as to be able to be pulled out in the front-rear direction. Also, the small freezer compartment container 32 is arranged inside the storage container 31 arranged on the uppermost stage. That is, the small freezer compartment 131 is a space whose lower surface and side surfaces are formed by the small freezer compartment container 32 and whose upper surface is formed by the lower surface of the heat insulating wall 34 .

The small freezer compartment 131 stores the frozen material 16 such as meat or fish, for example. By performing quick freezing in the small freezer compartment 131, the object 16 to be frozen can be frozen early, and the freshness of the object 16 to be frozen can be maintained satisfactorily. When food or the like is taken in and out of the small freezer compartment 131, the heat insulating door 21 is turned to open, the uppermost storage container 31 is pulled forward, and the small freezer compartment container 32 is pulled forward. .

Furthermore, the air blown from the blower fan 24 is directly sent into the small freezer compartment 131 from the air outlet 33 . A small freezer compartment temperature measuring unit 26 is provided on the lower surface of the heat insulating wall 34 facing the small freezer compartment container 32 . The small freezer compartment temperature measuring unit 26 is composed of, for example, a thermistor, and is arranged so as not to protrude downward from the lower surface of the heat insulating wall 34 . Further, as will be described later, the uppermost outlet 33 and the small freezer compartment temperature measurement unit 26 are shifted in the left-right direction. By doing so, the low-temperature air blown out from the blowout port 33 is not directly blown to the small freezer compartment temperature measurement unit 26, and the small freezer compartment temperature measurement unit 26 measures the temperature of the object 16 to be frozen. can be detected accurately.

The refrigerator 10 has a quick freezing function as described above. The quick freezing function is a function of rapidly freezing the frozen object 16 when the user puts the frozen object 16 in the small freezer compartment 131 . The quick freeze function can be executed by the user operating the control panel. Furthermore, the quick freezing function can be executed as an automatic quick freezing function by the arithmetic control section based on the temperature detected by the small freezer compartment temperature measuring section 26 without any special operation by the user. Note that the quick freezing function may also be referred to as a quick freezing function.

The configuration of the small freezer compartment temperature measuring unit 26 and the like will be described with reference to FIGS. 4A and 4B. FIG. 4A is a side sectional view showing the internal configuration near the small freezer compartment 131. FIG. FIG. 4B is an enlarged side cross-sectional view showing the small freezer compartment temperature measuring unit 26 and its vicinity. In FIG. 4B, the position of the upper surface of the small freezer compartment 131 inside the inner box opening 27 is indicated by a dashed line.

Referring to FIG. 4A , small freezer compartment temperature measurement unit 26 is provided on the ceiling surface of small freezer compartment 131 . In other words, the small freezer compartment temperature measurement unit 26 is embedded in the heat insulating wall 34 . The small freezer compartment 131 is a thin, substantially rectangular parallelepiped space formed directly below the heat insulating wall 34 . Therefore, by arranging the small freezer compartment temperature measurement unit 26 on the lower surface of the heat insulating wall 34, the internal temperature of the small freezer compartment 131 can be accurately measured. A metal tray 25 made of an aluminum plate or the like is arranged on the bottom surface of the small freezer compartment container 32 , and the object to be frozen 16 is placed on the top surface of the metal tray 25 . By doing so, heat is transferred well from the object 16 to be frozen to the metal tray 25, and the object 16 to be frozen can be cooled more effectively.

Referring to FIG. 4B , small freezer compartment temperature measuring unit 26 has temperature sensor unit 261 that detects the temperature of small freezer compartment 131 and sensor covering unit 262 that surrounds temperature sensor unit 261 .

The temperature sensor unit 261 is, for example, a thermistor, and outputs an electric signal indicating the internal temperature of the small freezer compartment 131 to an arithmetic control unit (not shown).

The sensor covering portion 262 is a container made of synthetic resin or the like that surrounds the temperature sensor portion 261 . A support portion 265 is arranged inside the sensor covering portion 262 . The support portion 265 is a portion erected from the lower surface of the sensor covering portion 262 and fixes the temperature sensor portion 261 inside the sensor covering portion 262 .

Small freezer compartment temperature measuring unit 26 faces small freezer compartment 131 through casing opening 303 and inner box opening 27 . A casing opening 303 is a portion where the inner box 112 is opened. The casing opening portion 303 is a portion where the upper surface portion 301 of the casing portion 30, which will be described later, is opened.

The temperature sensor section 261 is arranged above the upper surface of the small freezer compartment 131 . More specifically, the lower end of temperature sensor portion 261 is located above the lower surface of upper surface portion 301 of casing portion 30 forming the upper surface of small freezer compartment 131 . Here, the portion corresponding to the upper surface of the small freezer compartment 131 is indicated by a dashed line. By doing so, even if the air blown into the inside of the small freezer compartment 131 from the outlet 33 shown in FIG. It is possible to suppress direct blowing onto the temperature sensor portion 261 . Therefore, the internal temperature of the small freezer compartment 131 can be accurately detected by the temperature sensor section 261 .

Since the temperature sensor unit 261 has such a configuration, it is possible to perform the automatic quick freezing function more reliably. Specifically, referring to FIG. 4A, when the user opens and closes heat insulating door 21, storage container 31, and small freezer compartment container 32 to store frozen object 16 in small freezer compartment 131, an arithmetic control (not shown) is performed. The unit monitors changes over time in the temperature detected by the small freezer compartment temperature measurement unit 26 . After that, if the change in the detected temperature detected by the small freezer compartment temperature measuring unit 26 is greater than the threshold value, that is, if the temperature drop in the small freezer compartment 131 is gradual, the arithmetic control unit Determine that it is food such as meat, and execute automatic quick freezing. That is, the rotational speed of the compressor 22 is increased to freeze the object 16 early. By doing so, the amount of drip generated when the frozen material 16 is thawed can be reduced, and the freshness of the frozen material 16 can be maintained satisfactorily.

FIG. 5 is a perspective view showing the small freezer compartment temperature measurement unit 26. As shown in FIG. In the small freezer compartment temperature measurement section 26 , the temperature sensor section 261 described above is incorporated in the sensor covering section 262 .

The sensor covering portion 262 has a substantially lid-shaped upper covering portion 266 forming an upper portion, and a substantially lid-shaped lower covering portion 267 forming a lower portion.

The opening 263 is formed by partially opening the front and rear side surfaces of the lower covering portion 267 . The opening 263 allows communication between the small freezer compartment 131 and the inner space of the sensor cover 262 . A plurality of openings 263 are formed along the left-right direction on the front side surface of the lower covering portion 267 . A plurality of openings 263 are also formed along the left-right direction on the rear side surface of the lower covering portion 267 . With this configuration, the air inside the small freezer compartment 131 enters the inside of the sensor covering portion 262 appropriately through the opening 263, and the temperature sensor portion 261 incorporated in the sensor covering portion 262 detects the temperature of the small freezer compartment. The temperature inside 131 can be accurately detected. 4B, the lower part of opening 263 is arranged below the upper surface of small freezing compartment 131, and the upper part of opening 263 is arranged above the upper surface of small freezing compartment 131. be.

The brim portion 264 is a portion in which the upper edge portion of the lower covering portion 267 protrudes forward, rearward, leftward, and rightward in a brim-like shape. Referring to FIG. 4B , flange 264 is a portion that contacts the upper surface of inner box 112 around inner box opening 27 . By doing so, the position of the temperature sensor unit 261 built into the small freezer compartment temperature measurement unit 26 can be accurately defined in the vertical direction, and the temperature sensor unit 261 can accurately measure the inside temperature of the small freezer compartment 131. can be detected.

FIG. 6 is a perspective view showing the inner box 112 forming the freezer compartment 13. As shown in FIG. A casing part 30 is attached to the upper surface of the inner box 112 .

The casing portion 30 is made of injection-molded synthetic resin or the like, and has an upper surface portion 301 and a rail portion 302 . By inserting the above-described small freezer compartment container 32 into the casing part 30 from the front, the above-described small freezer compartment 131 is formed as a space surrounded by the casing part 30 and the small freezer compartment container 32 .

The upper surface portion 301 has a substantially rectangular shape and is a portion that abuts on the ceiling surface of the inner box 112 .

The rail portions 302 extend downward from the left and right ends of the upper surface portion 301 . The rail portion 302 supports the above-described small freezer compartment container 32 so as to be slidable in the front-rear direction.

A casing opening 303 is formed by opening the upper surface 301 . As described above, the small freezer compartment temperature measurement unit 26 faces the small freezer compartment 131 via the casing opening 303 .

FIG. 7 is an exploded perspective view showing the inner box 112 that constitutes the freezer compartment 13. As shown in FIG. As described above, the inner box opening 27 is formed by opening the upper surface of the inner box 112 . Further, the casing part 30 is attached to the ceiling surface of the inner box 112 from below. The inner box opening 27 of the inner box 112 and the casing opening 303 of the casing section 30 are arranged so as to overlap each other when viewed from above. By doing so, the small freezer compartment temperature measuring unit 26 can be made to face the inside of the small freezer compartment 131 via the inner box opening 27 and the casing opening 303 .

A conducting wire 35 extends from the temperature sensor portion 261 housed in the sensor covering portion 262 . The temperature sensor section 261 is connected via a lead wire 35 to an arithmetic control section (not shown).

The small freezer compartment temperature measurement unit 26 , the inner box opening 27 and the upper surface of the inner box 112 in the vicinity thereof are covered with a fixing tape 36 . This prevents the foamed resin from entering the inner box 112 through the inner box opening 27 .

FIG. 8 is a front view showing the small freezer compartment 131 and its vicinity. Here, the small freezer compartment container 32 that constitutes the small freezer compartment 131 is not shown.

The blowout port 33 is a cylindrical portion that is formed on the rear surface of the inner box 112 and protrudes forward. Air from the aforementioned cooling chamber 115 is blown out toward the small freezer compartment 131 via the blowout port 33 .

The small freezer compartment temperature measurement unit 26 and the air outlet 33 are arranged with a shift in the width direction. Here, the small freezer compartment temperature measurement unit 26 is arranged on the left side of the air outlet 33 . Specifically, the right end portion of the small freezer compartment temperature measuring portion 26 is arranged on the left side of the left end portion of the outlet 33 . That is, in the horizontal direction, the small freezer compartment temperature measurement unit 26 and the air outlet 33 are arranged so as not to overlap each other. Also, a temperature sensor unit 261 (not shown) incorporated in the small freezer compartment temperature measurement unit 26 is also arranged on the left side of the air outlet 33 .

By doing so, the low-temperature air blown out from the blowout port 33 blows through the right side of the small freezer compartment temperature measuring part 26, so that it is not blown directly to the small freezer compartment temperature measuring part 26.例文帳に追加Therefore, the inside temperature of the small freezer compartment 131 can be accurately detected by the small freezer compartment temperature measuring section 26, and the automatic quick function can be executed based on the detected temperature of the small freezer compartment temperature measuring section 26. .

The above-described embodiment can provide the following main effects.

Specifically, as shown in FIG. 4B, by arranging the small freezer compartment temperature measurement unit 26 above the upper surface of the small freezer compartment 131, the air blown out from the outlet 33 is Since the air cannot be directly sprayed onto the room temperature measurement unit 26 , the inside temperature of the small freezer compartment 131 can be accurately detected by the small freezer compartment temperature measurement unit 26 .

Further, referring to FIG. 8, by arranging the small freezer compartment temperature measuring unit 26 and the air outlet 33 so as to be displaced in the width direction, the air blown out from the air outlet 33 is measured by the small freezer compartment temperature measuring unit 26. , the temperature inside the small freezer compartment 131 can be detected more accurately by the small freezer compartment temperature measuring unit 26 .

Furthermore, referring to FIG. 4B , the temperature sensor section 261 can be protected by the sensor covering section 262 by facing the small freezer compartment 131 through the opening 27 of the inner box.

Further, referring to FIG. 7, the sensor covering portion 262 faces the small freezer compartment 131 through the casing opening 303, so that when the small freezer compartment container 32 is moved in the front-rear direction in order to take in and out stored items, In addition, the stored items can be prevented from coming into contact with the temperature sensor section 261 .

Although the embodiments of the present invention have been described above, the present invention is not limited to these, and modifications can be made without departing from the gist of the present invention. Moreover, each form described above can be combined with each other.

For example, referring to FIG. 3, it may have a cooling circuit capable of cooling the refrigerator compartment 12 and the freezer compartment 13 individually or simultaneously. Specifically, a refrigerator compartment cooler for cooling the refrigerator compartment 12 is provided separately from the evaporator 116 , the refrigerator compartment cooler cools the refrigerator compartment 12 , and the evaporator 116 cools the freezer compartment 13 . . In the case of such a configuration, for example, the arithmetic control unit, which is a CPU, switches to a cooling circuit that cools only the freezer compartment 13 when the opening/closing detection unit detects the opening/closing operation of the heat insulating door 21 . Specifically, the arithmetic control unit stops cooling the refrigerator compartment 12 by the refrigerator compartment cooler and continues cooling the freezer compartment 13 by the evaporator 116 .

10 refrigerator 11 heat insulation box 111 outer box 112 inner box 113 heat insulating material 114 main air passage 115 cooling chamber 116 evaporator 117 defrosting heater 12 refrigerator chamber 13 freezer chamber 131 small freezer chamber 14 machine chamber 15 storage shelf 16 to be frozen 17 Storage pocket 18 Insulated door 19 Insulated door 20 Insulated door 21 Insulated door 22 Compressor 23 Air outlet 24 Blower fan 25 Metal tray 26 Small freezer compartment temperature measurement part 261 Temperature sensor part 262 Sensor covering part 263 Opening part 264 Collar part 265 Support part 266 Upper covering part 267 Lower covering part 27 Inner box opening 28 Refrigerating compartment air passage 29 Refrigerating compartment damper 30 Casing part 301 Upper surface part 302 Rail part 303 Casing opening 31 Storage container 32 Small freezer compartment container 33 Air outlet 34 Heat insulating wall 35 Conductor 36 Fixing tape

Claims (6)

a heat insulating box body having an outer box, an inner box, and a heat insulating material disposed between the outer box and the inner box;
a freezer compartment formed inside the inner box;
a small freezer compartment defined inside the freezer compartment;
a cooling chamber in which the air blown into the freezing chamber is cooled by a cooler;
a blower fan for blowing the air from the cooling chamber to the freezing chamber;
an air outlet through which the air is blown from the cooling chamber to the freezing chamber;
a small freezer compartment temperature measuring unit that measures the temperature inside the small freezer compartment,
The refrigerator according to claim 1, wherein the small freezer compartment temperature measuring unit is arranged above an upper surface of the small freezer compartment. 2. The refrigerator according to claim 1, wherein said small freezer compartment temperature measuring unit and said outlet are arranged with a widthwise shift. The small freezer compartment temperature measuring unit has a temperature sensor that detects the temperature of the small freezer and a sensor covering that surrounds the temperature sensor,
3. The refrigerator according to claim 1, wherein said sensor covering portion faces said small freezer compartment through an inner box opening partly opening an upper surface of said inner box. a small freezer compartment container arranged so as to be able to be pulled out in the front-rear direction;
a casing part attached to the upper surface of the inner box;
The casing includes an upper surface, rails extending downward from width direction end sides of the upper surface and supporting the small freezer compartment container so as to be slidable in the longitudinal direction, and partially covering the upper surface. a casing opening that opens to
The small freezer compartment is a space surrounded by the small freezer compartment container and the casing,
4. The refrigerator according to claim 3, wherein said sensor covering portion faces said small freezer compartment through said casing opening. further comprising an arithmetic control unit,
4. The arithmetic control unit enhances the ability to cool the object to be frozen stored in the small freezer compartment based on the output of the small freezer compartment temperature measuring unit. The refrigerator according to any one of a refrigerator and
a cooling circuit capable of cooling the refrigerating compartment and the freezing compartment individually or simultaneously,
6. The refrigerator according to claim 5, wherein the arithmetic control unit stops cooling of the refrigerating compartment and switches to the cooling circuit that cools only the freezing compartment when the opening/closing operation of the door is detected.

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