CN117957414A - Refrigerator with a refrigerator body - Google Patents

Abstract

The invention relates in particular to a refrigerator comprising: a heat-insulating box body having an outer box and an inner box; a freezing chamber formed inside the inner case; small freezing chambers formed by dividing the inside of the freezing chamber; a cooling chamber in which air supplied to the freezing chamber is cooled by a cooler; an air supply fan for supplying the air from the cooling chamber to the freezing chamber: a blowing outlet for blowing out the air from the cooling chamber to the freezing chamber; and a small freezing chamber temperature measuring part for measuring the temperature inside the small freezing chamber.

Description

Refrigerator with a refrigerator body Technical Field

The present invention relates to a refrigerator, and more particularly, to a refrigerator having a temperature measuring part for detecting an indoor temperature of a small freezing chamber.

Background

Conventionally, a refrigerator for detecting the indoor temperature of a small freezing chamber as described in patent document 1 (patent No. 6608773) is known.

Specifically, in the refrigerator described in patent document 1, a thermistor for measuring the temperature of the freezing chamber is provided at a position recessed upward from the lower surface of the vertical partition portion for partitioning the small freezing chamber. The quick freezing function is also executed based on the output from the thermistor. In this way, the food can be automatically quick-frozen after being stored while suppressing a decrease in heat insulating performance between the freezing chamber and the refrigerating chamber or the like.

However, in the refrigerator described in patent document 1, there is room for improvement in terms of accurately detecting the indoor temperature of the small freezing chamber.

Specifically, in the refrigerator described in patent document 1, a thermistor for detecting a temperature is disposed near the cool air outlet. Thus, there are the following problems: there are cases where the thermistor cannot accurately detect the temperature due to cold air being blown from the air outlet to the thermistor.

In addition, the following problems are present: when the quick freezing function is executed based on the output of the thermistor, if the thermistor cannot accurately detect the indoor temperature of the small freezing chamber, the quick freezing function may be erroneously operated.

The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a refrigerator capable of accurately detecting the indoor temperature of a small freezing chamber by a small freezing chamber temperature measuring section.

Disclosure of Invention

The present invention aims to provide a refrigerator.

In order to achieve the above object, an embodiment of the present invention provides a refrigerator including: 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 freezing chamber formed inside the inner case; small freezing chambers formed by dividing the inside of the freezing chamber; a cooling chamber in which air supplied to the freezing chamber is cooled by a cooler; a blower fan for blowing the air from the cooling chamber to the freezing chamber; a blowing outlet for blowing out the air from the cooling chamber to the freezing chamber; and a small freezing chamber temperature measuring part for measuring the temperature inside the small freezing chamber; the small freezing chamber temperature measuring part is arranged above the upper surface of the small freezing chamber.

As a further improvement of one embodiment of the present invention, the small freezing chamber temperature measuring section is arranged so as to be offset from the air outlet in the width direction.

As a further improvement of an embodiment of the present invention, the small freezing chamber temperature measuring section has a temperature sensor section for detecting the temperature of the small freezing chamber and a sensor covering section surrounding the temperature sensor section, the sensor covering section facing the small freezing chamber from an inner box opening section which is open to an upper surface portion of the inner box.

As a further improvement of an embodiment of the present invention, it further includes: a small freezing chamber container disposed so as to be drawn out in the front-rear direction, and a housing portion mounted on an upper surface of the inner box, the housing portion having: an upper surface portion; a rail portion which protrudes downward from a widthwise end side of the upper surface portion and supports the small freezing chamber container so as to be slidable in the front-rear direction; and a case opening portion formed by opening the upper surface portion; the small freezing chamber is a space enclosed by the small freezing chamber container and the housing portion, and the sensor coating portion faces the small freezing chamber from the housing opening portion.

As a further improvement of one embodiment of the present invention, the refrigerator further includes an arithmetic control unit that increases the ability to cool the object to be frozen stored in the small freezing chamber based on the output of the small freezing chamber temperature measuring unit.

As a further improvement of an embodiment of the present invention, it further includes: a refrigerating chamber; and a cooling circuit capable of cooling the refrigerating chamber and the freezing chamber separately or simultaneously; after detecting the opening and closing operation of the door, the arithmetic control part switches the cooling circuit so that the cooling of the refrigerating chamber is stopped and only the freezing chamber is cooled.

As a further improvement of an embodiment of the present invention, it further includes: the refrigerator comprises a refrigerating chamber, wherein the refrigerating chamber and a freezing chamber are divided from top to bottom, a cooling chamber is formed at the rear side of the freezing chamber, an evaporator serving as a cooler is arranged in the cooling chamber, a mechanical chamber is formed at the rear side of the lower end side of the refrigerator in a dividing manner, and a compressor is arranged in the mechanical chamber.

As a further improvement of an embodiment of the present invention, the air outlet is formed on the rear surface of the inner case and is a cylindrical portion protruding forward, and the air blown from the blower fan is directly fed into the small freezing chamber from the air outlet.

As a further improvement of an embodiment of the present invention, the small freezing chamber temperature measuring part, the inner box opening part and the upper surface of the inner box in the vicinity thereof are covered with a fixing tape.

As a further improvement of one embodiment of the present invention, the sensor cover includes a substantially cover-shaped upper cover portion constituting the upper portion and a substantially cover-shaped lower cover portion constituting the lower portion, and the opening is formed by opening the front side surface and the rear side surface of the lower cover portion, and the opening communicates the small freezing chamber and the inner space of the sensor cover portion.

As a further improvement of one embodiment of the present invention, a flange portion is formed around the inner box opening portion at a portion abutting against the upper surface of the inner box, and the flange portion is a portion protruding in a flange shape from the upper edge portion of the lower covering portion in a front-rear-left-right-left direction.

As a further improvement of one embodiment of the present invention, a plurality of the opening portions are formed in the left-right direction on the front side surface of the lower cladding portion.

As a further improvement of one embodiment of the present invention, a plurality of the opening portions are formed in the left-right direction on the rear side surface of the lower covering portion.

As a further improvement of an embodiment of the present invention, it further includes: the refrigerating chamber and the freezing chamber are divided from top to bottom, the refrigerating chamber and the freezing chamber are divided by a heat insulation wall, the lower surface and the side surface of the small freezing chamber are formed by the small freezing chamber container, and the upper surface of the small freezing chamber is formed by the lower surface of the heat insulation wall.

As a further improvement of one embodiment of the present invention, the inner case opening and the case opening are disposed so as to overlap each other when viewed from above.

Compared with the prior art, the invention has the beneficial effects that: according to the refrigerator of the present invention, since the small freezing chamber temperature measuring part is provided above the upper surface of the small freezing chamber, the air blown out from the air outlet is not directly blown onto the small freezing chamber temperature measuring part, and thus the indoor temperature of the small freezing chamber can be accurately detected by the small freezing chamber temperature measuring part. Further, since the small-sized freezing chamber temperature measuring unit is disposed so as to be offset from the air outlet in the width direction, the air blown out from the air outlet is further separated from the small-sized freezing chamber temperature measuring unit, and thus the indoor temperature of the small-sized freezing chamber can be accurately detected by the small-sized freezing chamber temperature measuring unit. Further, since the sensor cover faces the small freezing chamber from the inner case opening, the temperature sensor portion can be protected by the sensor cover. Further, since the sensor cover faces the small freezing chamber from the housing opening, it is possible to prevent the storage from coming into contact with the temperature sensor portion when the small freezing chamber container is moved in the front-rear direction for storing and taking out the storage. Further, since the indoor temperature of the small freezing chamber is accurately detected by the small freezing chamber temperature measuring section, it can be accurately determined that the object to be frozen is contained in the small freezing chamber, and erroneous operation of the automatic quick freezing function can be suppressed. Further, even in a refrigerator in which the refrigerating chamber and the freezing chamber are individually cooled by the cooling circuit, it is possible to satisfactorily detect that the object to be frozen is stored in the small freezing chamber, and to effectively freeze the object to be frozen.

Drawings

Fig. 1 is a perspective view illustrating an external appearance of a refrigerator according to an embodiment of the present invention.

Fig. 2 is a front view illustrating an external appearance of a refrigerator in which a heat insulation door according to an embodiment of the present invention is opened.

Fig. 3 is a side sectional view illustrating an internal structure of a refrigerator according to an embodiment of the present invention.

Fig. 4A is a side sectional view partially illustrating an internal structure of a refrigerator according to an embodiment of the present invention.

Fig. 4B is a side sectional view showing a small freezing chamber temperature measuring part and the vicinity thereof in a refrigerator according to an embodiment of the present invention.

Fig. 5 is a perspective view illustrating a small freezing chamber temperature measuring part in a refrigerator according to an embodiment of the present invention.

Fig. 6 is a perspective view illustrating an inner case constituting a freezing chamber in a refrigerator according to an embodiment of the present invention.

Fig. 7 is an exploded perspective view illustrating an inner case constituting a freezing chamber in a refrigerator according to an embodiment of the present invention.

Fig. 8 is a front view illustrating a small freezing chamber and its vicinity in a refrigerator according to an embodiment of the present invention.

In the figure: 10. a refrigerator; 11. a heat insulation box; 111. an outer case; 112. an inner box; 113. a heat insulating material; 114. a main air supply path; 115. a cooling chamber; 116. an evaporator; 117. a defrosting heater; 12. a refrigerating chamber; 13. a freezing chamber; 131. a small freezing chamber; 14. a machine room; 15. a storage shelf; 16. a frozen object; 17. a storage structure; 18. a heat insulating door; 19. a heat insulating door; 20. a heat insulating door; 21. a heat insulating door; 22. a compressor; 23. a blow-out port; 24. an air supply fan; 25. a metal tray; 26. a small freezing chamber temperature measuring part; 261. a temperature sensor section; 262. a sensor coating section; 263. an opening portion; 264. a flange portion; 265. a support part; 266. an upper cladding portion; 267. a lower cladding portion; 27. an inner box opening; 28. A refrigerating chamber air supply path; 29. a refrigerating chamber damper; 30. a housing portion; 301. an upper surface portion; 302. a rail portion; 303. a housing opening; 31. a storage container; 32. a small freezer compartment container; 33. a blow-out port; 34. a heat insulating wall; 35. a wire; 36. and fixing the adhesive tape.

Detailed Description

A refrigerator 10 according to a specific embodiment of the present invention will be described in detail based on the drawings. In the description of the present embodiment, like parts are principally given like reference numerals, and duplicate descriptions are omitted. In the following description, the directions of up, down, front, rear, left and right are used for the description, but the left and right refer to the case where 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, seen from the left front. The refrigerator 10 has a heat-insulating box 11 and a storage compartment formed inside the heat-insulating box 11. As described later, the refrigerator 10 has a quick freezing function.

The refrigerator 10 has a refrigerating chamber 12 and a freezing chamber 13 as storage chambers from top to bottom. The front opening of the refrigerating compartment 12 is closed by a rotary heat-insulating door 18 and a heat-insulating door 19. The front surface opening of the freezing chamber 13 is closed by a heat insulating door 20 and a heat insulating door 21. The heat-insulating doors 18, 19, 20, and 21 are rotatable doors, and are rotatable about the outer ends in the lateral direction.

Fig. 2 is a front view of the refrigerator 10 showing the heat-insulating doors 18, 19, 20, and 21 in an opened state.

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

The refrigerating chamber 12 is a storage chamber for cooling the stored object to be refrigerated to a refrigerating temperature zone, and the indoor temperature thereof is cooled to a temperature zone of, for example, 2 ℃ to 5 ℃. Further, the inside surfaces of the heat insulating door 18 and the heat insulating door 19 for closing the refrigerating chamber 12 are provided with a storage structure 17.

The freezing chamber 13 is a storage chamber for cooling the stored object 16 to a freezing temperature range, and the indoor temperature thereof is cooled to a temperature range of, for example, -20 ℃ to-18 ℃. The freezing chamber 13 accommodates a plurality of storage containers 31. Here, 6 storage containers 31 are arranged in a matrix. Each of the storage containers 31 is a substantially box-shaped container made of resin with an open upper surface, and is freely drawn out in the front-rear direction.

A small freezing chamber 131 is formed inside the freezing chamber 13 near the upper end of the storage container 31 disposed at the upper right end. The small freezing chamber 131 is a rapid freezing chamber for freezing fresh foods such as fish and meat as soon as possible. Details of the small freezing chamber 131 are described later with reference to fig. 3 and the like. The small freezer compartment 131 is also referred to as a quick freeze zone.

Fig. 3 is a side sectional view of the refrigerator 10. The flow of cold air inside the refrigerator 10 is shown in fig. 3 by dotted arrows.

The heat insulating box 11 is constituted of: an outer case 111 made of a steel plate bent to a prescribed shape; an inner case 112 formed of a synthetic resin plate disposed on the inner side so as to be spaced apart from the outer case 111; and a heat insulating material 113 filled between the outer case 111 and the inner case 112.

The storage compartment inside the heat-insulating box 11 is divided into the refrigerating compartment 12 and the freezing compartment 13 from the top down as described above. The refrigerating compartment 12 and the freezing compartment 13 are divided by a heat insulating wall 34. The heat insulating wall 34 has the same heat insulating structure as the heat insulating box 11.

The inside of the refrigerating chamber 12 is partitioned by a plurality of storage shelves 15 in the up-down direction.

A cooling chamber 115 is formed at the rear side of the freezing chamber 13. An evaporator 116 as a cooler is disposed in the cooling chamber 115. The refrigerator 10 is divided into a machine room 14 at the rear side of the lower end, and a compressor 22 is disposed in the machine room 14. The evaporator 116 and the compressor 22 together with a condenser and an expansion device, not shown here, form a vapor compression refrigeration cycle. During the vapor compression refrigeration cycle operation, the cool air in the cooling chamber 115 is cooled by the evaporator 116, and the cool air is blown into each storage chamber, so that the indoor temperature of each storage chamber reaches a predetermined cooling temperature zone.

A blower fan 24 is disposed above the evaporator 116 in the cooling chamber 115. The blower fan 24 is an axial blower or a centrifugal blower, and blows cool air inside the evaporator 116 cooled by the evaporator 116 toward the refrigerating compartment 12 and the freezing compartment 13.

A defrosting heater 117 is disposed inside the cooling chamber 115 below the evaporator 116. With the vapor compression refrigeration cycle, thick frost is generated on the surface of the evaporator 116. When this occurs, the arithmetic control part described later stops the compressor 22 and closes the cooling chamber 115, and defrosting operation is performed by heating the defrosting heater 117 by energizing it, to melt and remove frost.

A main air-sending passage 114 is formed on the front side of the cooling chamber 115. Further, a refrigerating compartment air-sending passage 28 is formed upward from the main air-sending passage 114. A refrigerating room damper 29 is installed in the refrigerating room air supply path 28. The cooling compartment air duct 28 has an air outlet 23 formed therein, which is an opening for blowing cool air into the cooling compartment 12.

The air in the cooling chamber 115 cooled by the evaporator 116 is blown in the direction of the main air-blowing path 114 by the air-blowing fan 24, and then blown to the freezing chamber 13, thereby cooling the freezing chamber 13 to a predetermined freezing temperature zone. The air that cools the freezing chamber 13 is returned to the cooling chamber 115 via a return air path not shown here. A 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 blower 28, and the air outlet 23, and cools the refrigerator compartment 12 to a predetermined refrigeration temperature range. The air cooled in the refrigerator compartment 12 is returned to the cooling compartment 115 through a return air passage not shown here.

The small freezing chamber 131 is formed at the uppermost portion of the freezing chamber 13. The small freezing chamber 131 is a portion surrounded by the small freezing chamber container 32. The small freezing chamber container 32 is a resin container having an upper opening, and is disposed so as to be able to be pulled out in the front-rear direction. The small freezing chamber container 32 is disposed inside the container 31 disposed at the uppermost layer. That is, the small freezing chamber 131 is a space such that: the lower surface and the side surfaces thereof are constituted by the small freezing chamber container 32, and the upper surface is constituted by the lower surface of the heat insulating wall 34.

The small freezing chamber 131 accommodates therein a refrigerated object 16 such as fish and meat. By performing quick freezing in the small freezing chamber 131, the object 16 to be frozen can be frozen as soon as possible, and the freshness of the object 16 to be frozen can be maintained well. When food or the like is stored in the small freezing chamber 131, the heat-insulating door 21 is opened by rotation, the uppermost storage container 31 is pulled forward, and the small freezing chamber container 32 is pulled forward.

Further, the air blown from the blower fan 24 is directly sent from the air outlet 33 to the small freezing chamber 131. Further, a small freezing chamber temperature measuring section 26 is provided on the lower surface of the heat insulating wall 34 facing the small freezing chamber container 32. The small freezing chamber temperature measuring unit 26 is formed of, for example, a thermistor, and is disposed so as to protrude downward from the lower surface of the heat insulating wall 34. As will be described later, the uppermost blowout port 33 is offset from the small freezing chamber temperature measuring section 26 in the left-right direction. In this way, the low-temperature air blown out from the air outlet 33 is not directly blown onto the small-freezing-chamber temperature measuring portion 26, so that the small-freezing-chamber temperature measuring portion 26 can accurately detect the temperature of the frozen object 16.

As previously described, the refrigerator 10 has a quick freezing function. The quick freezing function is a function of quickly freezing the object 16 to be frozen when the user stores the object 16 to be frozen in the small freezing chamber 131. The quick freezing function can be performed according to a user operating the control panel. Further, the quick freezing function may be implemented as an automatic quick freezing function, in which the quick freezing function is implemented by the arithmetic control section based on the detected temperature of the small freezing chamber temperature measuring section 26 even if the user does not perform a special operation. In addition, the quick freezing function is sometimes also referred to as a quick freezing function.

The structure of the small freezing chamber temperature measuring section 26 and the like will be described with reference to fig. 4A and 4B. Fig. 4A is a side sectional view showing an internal structure in the vicinity of the small freezing chamber 131. Fig. 4B is a side sectional view showing the small freezing chamber temperature measuring section 26 and its vicinity in an enlarged manner. In fig. 4B, the position of the upper surface of the small freezing chamber 131 inside the inner box opening 27 is shown in broken lines.

Referring to fig. 4A, the small freezing chamber temperature measuring part 26 is provided on the top surface of the small freezing chamber 131. In other words, the small freezing chamber temperature measuring part 26 is made to be buried in the heat insulating wall 34. The small freezing chamber 131 is a space formed directly below the heat insulating wall 34 in a substantially rectangular parallelepiped shape. Thus, since the small freezing chamber temperature measuring unit 26 is disposed on the lower surface of the heat insulating wall 34, the indoor temperature of the small freezing chamber 131 can be accurately measured. A metal tray 25 made of an aluminum plate or the like is disposed on the bottom surface of the small freezing chamber container 32, and the object 16 to be frozen is placed on the upper surface of the metal tray 25. In this way, heat conduction from the object 16 to the metal tray 25 is good, and the object 16 is cooled more effectively.

Referring to fig. 4B, the small freezing chamber temperature measuring part 26 has a temperature sensor part 261 for detecting the temperature of the small freezing chamber 131 and a sensor coating part 262 surrounding the temperature sensor part 261.

The temperature sensor 261 is, for example, a thermistor, and outputs an electric signal indicating the internal temperature of the small freezing chamber 131 to a computation control unit not shown here.

The sensor cover 262 is a container made of synthetic resin or the like surrounding the temperature sensor 261. The support portion 265 is disposed inside the sensor coating portion 262. The support portion 265 is a portion erected from the lower surface of the sensor cover portion 262, and the temperature sensor portion 261 is fixed inside the sensor cover portion 262.

The small freezing chamber temperature measuring section 26 faces the small freezing chamber 131 from the housing opening 303 and the inner box opening 27. The case opening 303 is a portion where the inner case 112 is opened. The case opening 303 is a portion where an upper surface 301 of the case portion 30 described later opens.

The temperature sensor portion 261 is disposed above the upper surface of the small freezing chamber 131. More specifically, the lower end of the temperature sensor portion 261 is disposed above the lower surface of the upper surface portion 301 of the housing portion 30 constituting the upper surface of the small freezing chamber 131. Here, a portion corresponding to the upper surface of the small freezing chamber 131 is shown in dotted lines. In this way, the air blown out into the inside of the small freezing chamber 131 from the air outlet 33 shown in fig. 4A travels forward along the upper surface of the small freezing chamber 131, so that it is possible to suppress the air from being blown directly onto the temperature sensor portion 261. Thus, the indoor temperature of the small freezing chamber 131 can be accurately detected by the temperature sensor 261.

The temperature sensor 261 can be configured to perform an automatic quick-freezing function more reliably. Specifically, referring to fig. 4A, after a user stores the object 16 to be frozen in the small freezing chamber 131 by opening and closing the heat-insulating door 21, the storage container 31, and the small freezing chamber container 32, an unillustrated arithmetic control unit monitors a change in the detected temperature of the small freezing chamber temperature measuring unit 26 with time. Thereafter, in the case where the change in the detected temperature detected by the small freezing chamber temperature measuring section 26 is greater than the threshold value, that is, in the case where the temperature decrease of the small freezing chamber 131 is slow, the arithmetic control section judges that the object 16 to be frozen is a food such as meat, and performs automatic quick freezing. That is, the number of rotations of the compressor 22 is increased to quickly freeze the object 16 to be frozen. In this way, the amount of dripping occurring when thawing the frozen object 16 is reduced, and the freshness of the frozen object 16 can be maintained well.

Fig. 5 is a perspective view showing the small freezing chamber temperature measuring section 26. In the small freezing chamber temperature measuring section 26, the temperature sensor section 261 is built in the sensor coating section 262.

The sensor cover 262 includes a substantially cover-shaped upper cover 266 constituting an upper portion and a substantially cover-shaped lower cover 267 constituting a lower portion.

The opening 263 is formed by partially opening the front and rear sides of the lower coating 267. The opening 263 communicates the small freezing chamber 131 with the inner space of the sensor cover 262. A plurality of openings 263 are formed in the front surface of the lower covering portion 267 in the left-right direction. A plurality of openings 263 are formed in the left-right direction in the rear surface of the lower covering portion 267. With this structure, the air inside the small freezing chamber 131 moderately enters the inside of the sensor cover 262 through the opening 263, so that the temperature inside the small freezing chamber 131 can be accurately detected by the temperature sensor 261 built in the sensor cover 262. Referring to fig. 4B, a lower portion of the opening 263 is disposed below the upper surface of the small freezing chamber 131, and an upper portion of the opening 263 is disposed above the upper surface of the small freezing chamber 131.

The flange 264 is a portion of the lower coating 267 that protrudes in a flange shape in the front-rear-left-right direction at the upper edge. Referring to fig. 4B, the flange 264 is a portion that abuts the upper surface of the inner box 112 around the inner box opening 27. In this way, the position of the temperature sensor unit 261 incorporated in the small freezing chamber temperature measuring unit 26 can be accurately defined in the vertical direction, and the indoor temperature of the small freezing chamber 131 can be accurately detected by the temperature sensor unit 261.

Fig. 6 is a perspective view showing an inner case 112 constituting the freezing chamber 13. A housing portion 30 is mounted on the upper surface of the inner case 112.

The housing portion 30 is made of injection-molded synthetic resin or the like, and has an upper surface portion 301 and a rail portion 302. Further, the small freezing chamber container 32 is inserted into the housing part 30 from the front, so that the small freezing chamber 131 is formed as a space surrounded by the housing part 30 and the small freezing chamber container 32.

The upper surface 301 is substantially rectangular and is a portion that abuts against the top surface of the inner case 112.

The rail portion 302 protrudes downward from left and right end portions of the upper surface portion 301. The rail portion 302 supports the small freezing chamber container 32 so as to be slidable in the front-rear direction.

The upper surface 301 is opened to form a case opening 303. As described above, the small freezing chamber temperature measuring section 26 faces the small freezing chamber 131 via the housing opening section 303.

Fig. 7 is an exploded perspective view showing an inner case 112 constituting the freezing chamber 13. As described above, the upper surface portion of the inner case 112 is opened to form the inner case opening portion 27. Further, a housing portion 30 is mounted on the top surface of the inner case 112 from below. The inner case opening 27 of the inner case 112 and the case opening 303 of the case 30 are disposed so as to overlap each other when viewed from above. Thus, the following features can be achieved: the small freezing chamber temperature measuring section 26 faces the inside of the small freezing chamber 131 via the inner box opening section 27 and the casing opening section 303.

Further, the lead wire 35 protrudes from the temperature sensor portion 261 housed in the sensor housing portion 262. The temperature sensor 261 is connected to an arithmetic control unit, not shown here, via a wire 35.

The upper surfaces of the small freezing chamber temperature measuring part 26, the inner box opening part 27 and the inner box 112 in the vicinity thereof are covered with the fixing tape 36. Thus, the foaming resin is prevented from entering the inside of the inner case 112 through the inner case opening 27.

Fig. 8 is a front view showing the small freezing chamber 131 and the vicinity thereof. The small freezing chamber container 32 constituting the small freezing chamber 131 is not illustrated here.

The blow-out port 33 is formed on the rear surface of the inner case 112, and is a cylindrical portion protruding forward. The air from the cooling chamber 115 is blown out to the small freezing chamber 131 through the air outlet 33.

The small freezing chamber temperature measuring section 26 and the air outlet 33 are arranged so as to be offset in the width direction. Here, the small freezing chamber temperature measuring section 26 is disposed on the left side of the air outlet 33. Specifically, the right end portion of the small freezing chamber temperature measuring section 26 is disposed on the left side of the left end portion of the air outlet 33. That is, the small freezing chamber temperature measuring section 26 and the blowout port 33 are arranged so as not to overlap in the left-right direction. A temperature sensor 261, not shown here, built in the small freezing chamber temperature measuring unit 26 is also disposed on the left side of the air outlet 33.

In this way, the low-temperature air blown out from the air outlet 33 blows through the right side of the small-freezing-chamber temperature measuring section 26 without being blown straight onto the small-freezing-chamber temperature measuring section 26. Thereby, the indoor temperature of the small freezing chamber 131 can be correctly detected by the small freezing chamber temperature measuring part 26, and the automatic quick function can be carried out based on the detected temperature of the small freezing chamber temperature measuring part 26.

With the present embodiment described above, the following main effects can be achieved.

Specifically, as shown in fig. 4B, since the small freezing chamber temperature measuring section 26 is disposed above the upper surface of the small freezing chamber 131, the air blown out from the air outlet 33 is not directly blown onto the small freezing chamber temperature measuring section 26, and thus the indoor temperature of the small freezing chamber 131 can be accurately detected by the small freezing chamber temperature measuring section 26.

Further, referring to fig. 8, since the small-freezing-chamber temperature measuring section 26 is arranged so as to be offset from the air outlet 33 in the width direction, the air blown out from the air outlet 33 is further separated from the small-freezing-chamber temperature measuring section 26, and thus the indoor temperature of the small freezing chamber 131 can be accurately detected by the small-freezing-chamber temperature measuring section 26.

Further, referring to fig. 4B, since the sensor cover 262 faces the small freezing chamber 131 from the inner case opening 27, the temperature sensor 261 can be protected by the sensor cover 262.

Further, referring to fig. 7, since the sensor cover 262 faces the small freezing chamber 131 from the case opening 303, it is possible to prevent the storage from coming into contact with the temperature sensor 261 when the small freezing chamber container 32 is moved in the front-rear direction for storing and taking out the storage.

The above description has been made with respect to specific embodiments of the present invention, but the present invention is not limited thereto, and modifications may be made without departing from the gist of the present invention. The above-described modes may be combined with each other.

For example, referring to fig. 3, it is possible to have a cooling circuit that can cool the refrigerating chamber 12 and the freezing chamber 13 separately or simultaneously. Specifically, an evaporator 116 and a refrigerator-freezer cooler for cooling the refrigerator compartment 12 are provided, respectively, the refrigerator compartment 12 is cooled by the refrigerator-freezer cooler, and the freezer compartment 13 is cooled by the evaporator 116. In the case of such a configuration, after the switch detection unit detects the opening and closing operation of the heat-insulating door 21, the arithmetic control unit (for example, CPU) switches to a cooling circuit that cools only the freezing chamber 13. Specifically, the arithmetic and control unit stops cooling of the refrigerating compartment 12 by the refrigerating compartment cooler, and continues cooling of the freezing compartment 13 by the evaporator 116.

Although embodiments and specific examples of the invention have been described, the disclosure may vary as to details of construction, and variations in the arrangement and order of the elements of the embodiments, specific examples, etc. may be made without departing from the scope and spirit of the invention as claimed.

Claims (15)

1. A refrigerator, characterized in that it 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 freezing chamber formed inside the inner case;

   Small freezing chambers formed by dividing the inside of the freezing chamber;

   a cooling chamber in which air supplied to the freezing chamber is cooled by a cooler;

   a blower fan for blowing the air from the cooling chamber to the freezing chamber;

   A blowing outlet for blowing out the air from the cooling chamber to the freezing chamber; and

   A small freezing chamber temperature measuring part for measuring the temperature inside the small freezing chamber;

   the small freezing chamber temperature measuring part is arranged above the upper surface of the small freezing chamber.
2. The refrigerator according to claim 1, wherein the small freezing chamber temperature measuring section is disposed so as to be offset from the air outlet in a width direction.
3. The refrigerator of claim 1, wherein the small freezing chamber temperature measuring part has a temperature sensor part for detecting a temperature of the small freezing chamber and a sensor coating part surrounding the temperature sensor part,

   The sensor cover faces the small freezing chamber from an inner case opening portion that is formed by opening an upper surface portion of the inner case.
4. The refrigerator of claim 3, further comprising:

   A small freezing chamber container arranged to be drawn out in the front-rear direction, and

   A housing part mounted on the upper surface of the inner case,

   The housing portion has: an upper surface portion; a rail portion which protrudes downward from a widthwise end side of the upper surface portion and supports the small freezing chamber container so as to be slidable in the front-rear direction; and a case opening portion formed by opening the upper surface portion;

   The small freezing chamber is a space enclosed by the small freezing chamber container and the housing part,

   The sensor cover faces the small freezing chamber from the housing opening.
5. The refrigerator according to claim 1, further comprising an operation control portion,

   The arithmetic control unit increases the capacity of cooling the object to be frozen stored in the small freezing chamber based on the output of the small freezing chamber temperature measuring unit.
6. The refrigerator of claim 5, further comprising:

   A refrigerating chamber; and

   A cooling circuit capable of cooling the refrigerating chamber and the freezing chamber separately or simultaneously;

   After detecting the opening and closing operation of the door, the arithmetic control part switches the cooling circuit so that the cooling of the refrigerating chamber is stopped and only the freezing chamber is cooled.
7. The refrigerator of claim 1, further comprising: the refrigerator comprises a refrigerating chamber, wherein the refrigerating chamber and a freezing chamber are divided from top to bottom, a cooling chamber is formed at the rear side of the freezing chamber, an evaporator serving as a cooler is arranged in the cooling chamber, a mechanical chamber is formed at the rear side of the lower end side of the refrigerator in a dividing manner, and a compressor is arranged in the mechanical chamber.
8. The refrigerator of claim 7, wherein the blow-out port is formed on a rear surface of the inner case and is a cylindrical portion protruding forward, and air blown from the blower fan is directly fed into the small freezing chamber from the blow-out port.
9. The refrigerator of claim 3, wherein the small freezing chamber temperature measuring part, the inner box opening part and the upper surface of the inner box in the vicinity thereof are covered with a fixing tape.
10. The refrigerator according to claim 3, wherein the sensor cover has a substantially cover-shaped upper cover portion constituting an upper portion and a substantially cover-shaped lower cover portion constituting a lower portion, an opening portion is formed by opening front and rear side surface portions of the lower cover portion, and the opening portion communicates the small freezing chamber and an inner space of the sensor cover portion.
11. The refrigerator of claim 10, wherein a flange portion is formed at a portion of the periphery of the inner case opening portion that is in contact with the upper surface of the inner case, the flange portion being a portion of the lower cover portion that protrudes in a flange shape in a front-rear-left-right-left direction.
12. The refrigerator of claim 10, wherein a plurality of the opening portions are formed in a left-right direction at a front side surface of the lower cladding portion.
13. The refrigerator of claim 10, wherein a plurality of the opening portions are formed in a left-right direction at a rear side surface of the lower cladding portion.
14. The refrigerator of claim 4, further comprising: the refrigerating chamber and the freezing chamber are divided from top to bottom, the refrigerating chamber and the freezing chamber are divided by a heat insulation wall, the lower surface and the side surface of the small freezing chamber are formed by the small freezing chamber container, and the upper surface of the small freezing chamber is formed by the lower surface of the heat insulation wall.
15. The refrigerator according to claim 4, wherein the inner case opening and the housing opening are disposed to overlap each other when viewed from above.