WO2022143633A1

WO2022143633A1 - Refrigerator

Info

Publication number: WO2022143633A1
Application number: PCT/CN2021/141985
Authority: WO
Inventors: 徐晓汉
Original assignee: 海尔智家股份有限公司; 青岛海尔电冰箱有限公司; Aqua 株式会社
Priority date: 2020-12-29
Filing date: 2021-12-28
Publication date: 2022-07-07
Also published as: JP2022104679A; CN116761969A

Abstract

A refrigerator (10), comprising: a heat insulation refrigerator body (11), with a storage chamber formed inside same; a heat insulation door for closing a front opening (30) of the storage chamber; and a refrigeration cycle (31) for cooling the storage chamber. An inner side of a front surface portion (32) of the heat insulation refrigerator body (11) is provided with a refrigerant pipe (33), through which a high-temperature refrigerant for use in the refrigeration cycle (31) flows, and a heater (34). Using the refrigerant pipe (33) and the heater (34) arranged inside the front surface portion (32), the heat insulation door can be heated via the front surface portion (32) of the heat insulation refrigerator body (11) so as to suppress condensation on the surface of the heat insulation door.

Description

refrigerator

technical field

The present invention relates to a refrigerator, and particularly to a refrigerator in which the front opening of each storage compartment is closed by an insulating door.

Background technique

Conventionally, in refrigerators, there has been a problem that condensation occurs on the handle of the thermally insulated door that closes the front opening of the storage compartment. In particular, on the handle of the insulated door that closes the front opening of the freezer compartment, since the temperature difference between the outside air and the freezer compartment is large, the problem of dew condensation is more serious.

In order to solve this problem, Patent Document 1 - Japanese Patent Laid-Open No. 2020-101337 discloses a structure for heating the vicinity of the front opening of the heat insulating box. Specifically, a refrigerant pipe is arranged in the vicinity of the front opening of the heat insulation box, and the high-temperature refrigerant is circulated in the refrigerant pipe. By doing so, the temperature of the front opening of the heat insulating box and the heat insulating door is raised, and condensation is prevented from being generated on the handle portion of the heat insulating door.

However, in the refrigerator described in the above-mentioned Patent Document 1, there is still a problem that dew condensation occurs when the refrigerator is operating.

Specifically, if the refrigerant piping is arranged only in the vicinity of the front opening of the heat insulation box, the effect of temperature increase is not sufficient, and condensation problems occur in the vicinity of the front opening or the heat insulation door. In particular, when the refrigerator is operated under a condition of high temperature and high humidity, the problem that condensation occurs on the front opening or the heat-insulating door of the refrigerator becomes more significant.

SUMMARY OF THE INVENTION

The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to provide a refrigerator capable of suppressing the occurrence of condensation on an insulating door.

A refrigerator according to the present invention includes: a heat insulating box with a storage compartment formed therein; a heat insulating door closing a front opening of the storage compartment; and a refrigeration cycle for cooling the storage compartment, wherein the heat insulating box A refrigerant pipe and a heater are built in the inside of the front surface portion of the body, and the refrigerant pipe flows the high-temperature refrigerant used in the refrigeration cycle.

Further, in the refrigerator of the present invention, the heat insulating door includes: a first heat insulating door rotatably attached to one side in the left-right direction of the front surface of the heat insulating box; and a second heat insulating door rotatably installed On the other side in the left-right direction of the front surface of the heat-insulation box, the left-right inner end of the first heat-insulation door and the left-right inner end of the second heat-insulation door are in the left-right direction of the heat-insulation box. The front surface part abuts.

Moreover, in the refrigerator of this invention, the front surface part of the said heat insulation box has the front panel exposed to the front, and the said refrigerant|coolant piping and the said heater are arrange|positioned behind the said front panel.

Moreover, in the refrigerator of this invention, a heat transfer member is arrange|positioned between the said refrigerant|coolant piping, the said heater, and the said front plate.

Moreover, in the refrigerator of this invention, the said front surface part has the front surface main body part which consists of synthetic resin, and the said front surface main body part has the 1st recessed part which accommodates the said refrigerant piping, and the said heating the second concave portion of the device.

A refrigerator according to the present invention includes: a heat insulating box with a storage compartment formed therein; a heat insulating door closing a front opening of the storage compartment; and a refrigeration cycle for cooling the storage compartment, wherein the heat insulating box A refrigerant pipe and a heater are built in the inside of the front surface portion of the body, and the refrigerant pipe flows the high-temperature refrigerant used in the refrigeration cycle. Thereby, according to the refrigerator of this invention, generation|occurrence|production of dew condensation on a heat insulation door can be suppressed. Specifically, the temperature of the heat insulating door is increased through the front surface portion of the heat insulating box by the refrigerant piping and heater disposed inside the front surface portion, thereby preventing condensation from occurring on the surface of the heat insulating door.

Further, in the refrigerator of the present invention, the heat insulating door includes: a first heat insulating door rotatably attached to one side in the left-right direction of the front surface of the heat insulating box; and a second heat insulating door rotatably installed On the other side in the left-right direction of the front surface of the heat-insulation box, the left-right inner end of the first heat-insulation door and the left-right inner end of the second heat-insulation door are in the left-right direction of the heat-insulation box. The front surface portion abuts. Thus, according to the refrigerator of the present invention, in the double-door refrigerator having the first heat insulating door and the second heat insulating door, it is possible to suppress the occurrence of condensation on the first heat insulating door and the second heat insulating door.

Moreover, in the refrigerator of this invention, the front surface part of the said heat insulation box has the front panel exposed to the front, and the said refrigerant|coolant piping and the said heater are arrange|positioned behind the said front panel. Thus, according to the refrigerator of the present invention, the front panel is in close contact with the heat insulating door, whereby the heat generated from the refrigerant piping and the heater can be efficiently conducted to the heat insulating door via the front panel.

Moreover, in the refrigerator of this invention, a heat transfer member is arrange|positioned between the said refrigerant|coolant piping, the said heater, and the said front plate. Thus, according to the refrigerator of the present invention, the heat generated from the refrigerant piping and the heater can be more efficiently conducted to the heat insulating door via the front plate and the heat transfer member.

Moreover, in the refrigerator of this invention, the said front surface part has the front surface main body part which consists of synthetic resin, and the said front surface main body part has the 1st recessed part which accommodates the said refrigerant piping, and the said heating the second concave portion of the device. Thus, according to the refrigerator of the present invention, by arranging the heater and the refrigerant piping in the separate concave portion, the heater and the refrigerant piping can be separately arranged in the front surface portion, and a large amount of heat can be conducted to the heat insulating door.

Description of drawings

1 : is a perspective view which shows the external appearance of the refrigerator which concerns on embodiment of this invention, and shows the case where each heat insulation door is a closed state.

It is a front view which shows the external appearance of the refrigerator which concerns on embodiment of this invention, and shows the case where each heat insulation door is an open state.

3 is a side cross-sectional view showing the internal structure of the refrigerator according to the embodiment of the present invention.

Fig. 4(A) is a partial cross-sectional view showing the front surface portion and the heat insulating door of the refrigerator according to the embodiment of the present invention;

Fig. 4(B) is an enlarged cross-sectional view showing the front surface portion of the refrigerator according to the embodiment of the present invention.

Fig. 5(A) is a front view showing the front surface portion of the refrigerator according to the embodiment of the present invention;

Fig. 5(B) is a side cross-sectional view showing the front surface portion of the refrigerator according to the embodiment of the present invention.

Fig. 6(A) is a cross-sectional view showing a front surface portion of a refrigerator according to another aspect of the present invention;

Fig. 6(B) is a front view showing a front surface portion of a refrigerator according to another aspect of the present invention;

Fig. 6(C) is a side partial cross-sectional view showing a front surface portion of a refrigerator according to another aspect of the present invention.

Fig. 7(A) is a cross-sectional view showing a front surface portion of a refrigerator according to another aspect of the present invention;

Fig. 7(B) is a side partial cross-sectional view showing a front surface portion of a refrigerator according to another aspect of the present invention.

Fig. 8 is a perspective view showing a specific configuration of refrigerant piping for a refrigerator according to another aspect of the present invention.

Detailed ways

Hereinafter, the refrigerator 10 which concerns on embodiment of this invention is demonstrated in detail based on drawing. In the following description, in principle, the same components are denoted by the same reference numerals, and overlapping descriptions are omitted. In addition, in the following description, each direction of up-down, front-back, and left-right is used suitably, but right-and-left means the right and left when the refrigerator 10 is seen from the front. In addition, in the present embodiment, as the refrigerator 10, the refrigerator having the storage compartments in the freezing temperature zone and the refrigerating temperature zone is exemplified, but the refrigerator 10 may have only one of the storage compartments.

1 : is the perspective view which looked at the refrigerator 10 concerning embodiment of this invention from the front left side. The refrigerator 10 has a heat insulation box 11 and a storage compartment formed inside the heat insulation box 11 . As a storage compartment, a refrigerator compartment 12 and a freezer compartment 13 are provided 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 opening of the freezing compartment 13 is closed by the heat insulating door 20 and the 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 revolving doors, and can be rotated around the outer end in the left-right direction as the center of rotation. Here, for example, the heat insulating door 20 is a first heat insulating door, and the heat insulating door 21 is a second heat insulating door.

FIG. 2 is a front view showing the refrigerator 10 in which the heat insulating door 18, the heat insulating door 19, the heat insulating door 20, and the heat insulating door 21 are opened.

The front surface part 32 is a part of the heat insulation box 11, and is a member which partitions the front opening of the freezer compartment 13 in the left-right direction. In a closed state in which the heat insulating door 20 closes the front opening 30 , the inner end portion in the left-right direction of the heat insulating door 20 is in contact with the front surface portion 32 . In addition, in the closed state where the heat insulating door 21 closes the front opening 30 , the inner end portion in the left-right direction of the heat insulating door 21 is in contact with the front surface portion 32 . Since the freezer compartment 13 is a storage compartment cooled to a freezing temperature range, condensation tends to occur on the surfaces of the heat-insulating door 20 and the heat-insulating door 21 that close the freezer compartment 13 . In the present embodiment, as will be described later, in the inside of the front surface portion 32, in order to suppress the occurrence of condensation on the surfaces of the heat insulating door 20 and the heat insulating door 21, a heating unit for raising the temperature of the heat insulating door 20 and the heat insulating door 21 is built in .

3, the cross-sectional structure of the refrigerator 10 is demonstrated. FIG. 3 is a side sectional view of the refrigerator 10 .

The heat insulating box 11 includes an outer shell 15 which is bent into a predetermined shape and is made of a steel plate, an inner pot 16 which is arranged on the inner side separated from the outer shell 15 and is composed of a synthetic resin plate, and a heat insulating material 17 which Filled between the outer shell 15 and the inner pot 16 .

As described above, the storage compartment inside the heat insulating box 11 is divided into the refrigerator compartment 12 and the freezer compartment 13 from top to bottom. In addition, the refrigerator compartment 12 and the freezer compartment 13 are partitioned by a heat insulating wall 17 .

The cooling chamber 24 is formed in the back side of the freezing chamber 13, and the freezing chamber 13 and the cooling chamber 24 are divided. An evaporator 25 serving as a cooler is arranged inside the cooling chamber 24 . Moreover, the machine room 14 is partitioned and formed in the back of the lower end of the refrigerator 10, and the compressor 22 is arrange|positioned in the machine room 14. As shown in FIG. The evaporator 25 and the compressor 22 form a refrigeration cycle 31 as a vapor compression refrigeration cycle together with a condenser and an expansion unit not shown here. By operating the refrigeration cycle 31, the evaporator 25 cools the air inside the cooling chamber 24 and blows the cool air to each storage chamber, whereby the indoor temperature of each storage chamber becomes a predetermined cooling temperature range. That is, the refrigerator compartment 12 is set in the refrigeration temperature zone, and the freezer compartment 13 is set in the freezing temperature zone. In addition, each constituent device of the vapor compression refrigeration cycle is connected to each other via refrigerant piping not shown here.

Inside the cooling chamber 24 , a blower 29 is arranged above the evaporator 25 . The blower 29 is an axial blower or a centrifugal blower, and blows the air inside the evaporator 25 cooled by the evaporator 25 toward the refrigerator compartment 12 and the freezer compartment 13 .

A defrost heater 26 is arranged inside the evaporator 25 and below the evaporator 25 . With the operation of the refrigeration cycle 31 , thick frost is generated on the surface of the evaporator 25 . In this way, a control unit (not shown) stops the compressor 22, closes the cooling chamber 24, and energizes the defrost heater 26 for heating, thereby performing a defrosting operation for melting and defrosting. In addition, although not shown here, a shielding device for appropriately closing the air passage is arranged in the vicinity of the blower 29 .

An air passage 28 is formed upward from the cooling chamber 24 . A part of the air blown by the blower 29 is blown out to the refrigerating compartment 12 via the air duct 28 and the air outlet 23. Further, a part of the air blown by the blower 29 is blown to the freezing compartment 13 . Then, the air that cools the refrigerator compartment 12 and the freezer compartment 13 is returned to the cooling compartment 24 via a return air passage not shown here.

FIG. 4(A) is a cross-sectional view partially showing the front surface portion 32 , the heat insulating door 20 , and the heat insulating door 21 , and FIG. 4(B) is a cross-sectional view showing the front surface portion 32 in an enlarged manner. Here, FIGS. 4(A) and 4(B) are cross-sectional views taken along the cutting plane line A-A of FIG. 2 .

Referring to FIG. 4(A) , the right end portion of the heat insulating door 20 and the left end portion of the heat insulating door 21 abut on the front surface of the front surface portion 32 . Specifically, the door seal 40 attached to the rear surface of the heat insulating door 20 in a frame shape is in contact with the front surface of the front surface portion 32 . Similarly, the door seal 41 attached to the rear surface of the heat insulating door 21 in a frame shape is in contact with the front surface of the front surface portion 32 . A heat generating mechanism is built in the front surface of the front surface portion 32 for preventing condensation of the heat insulating door 20 and the heat insulating door 21 when the refrigerator 10 is operated.

Referring to FIG. 4(B) , a heat generating mechanism built in the vicinity of the front surface of the front surface portion 32 will be described. The front surface main body portion 37 is composed of a synthetic resin plate molded into a predetermined shape, and forms the main body portion of the front surface portion 32 . The recessed portion 42 is formed by recessing the substantially central portion of the front surface of the front surface main body portion 37 toward the rear.

The concave portion 42 accommodates the front plate 35 , the heat transfer member 36 , the refrigerant piping 33 , the heater 34 , the heat insulating portion 43 , and the heat transfer belt 44 .

The front plate 35 closes the concave portion 42 from the front surface, and is a plate-like member made of a material with a high thermal conductivity. As the recessed portion 42 , for example, a metal plate or the like whose surface has been subjected to anti-rust processing can be used. The front surface of the heat transfer member 36 and the front surface of the front surface portion 32 are arranged on substantially the same plane. Here, in order to improve the thermal conductivity of the recessed portion 42 , the front plate 35 of the portion where the heat transfer member 36 is arranged may be formed thinner than the other portions. Moreover, the door seal 40 of the heat insulation door 20 shown in FIG. 4(A) and the door seal 41 of the heat insulation door 21 are in contact with the front plate 35 .

The heat transfer member 36 is a plate-shaped member formed of a material with a high thermal conductivity that is disposed in the substantially central portion of the front plate 35 . The heat transfer member 36 has a function of favorably conducting the heat conducted from the refrigerant piping 33 to the heat-insulating door 20 and the heat-insulating door 21 side described above.

As the heat transfer member 36 , for example, a laminate of the metal layer 362 arranged on the rear side and the resin layer 361 arranged on the front side can be used. As the metal layer 362, a metal layer made of metal such as aluminum can be used. As the resin layer 361, a soft resin such as rubber can be used, for example. By using the metal layer 362, the thermal conductivity of the heat transfer member 36 can be improved. By using the resin layer 361 , the resin layer 361 deforms during manufacture, and it is possible to absorb tolerances in the shape of parts or the mounting accuracy.

The refrigerant piping 33 is compressed by the compressor 22 of the refrigeration cycle 31 described above, and circulates a high-temperature refrigerant having a high temperature. The heat generated from the high-temperature refrigerant flowing through the refrigerant piping 33 is conducted to the above-described heat insulating door 20 and heat insulating door 21 via the heat transfer member 36 and the front plate 35 .

The heat insulating portion 43 is a plate-shaped member disposed between the front surface of the front surface main body portion 37 and the refrigerant piping 33 . As the material of the heat insulating portion 43 , a material having a lower thermal conductivity than the front surface main body portion 37 , the front plate 35 , and the heat transfer member 36 can be used, and, for example, a foamed resin can be used.

The heater 34 is, for example, an electrothermal heater that generates heat by energization, and is disposed between the front plate 35 and the front main body portion 37 . In addition, two heaters 34 are arranged on the outer side in the left-right direction of the heat transfer member 36 . In the operating state of the refrigerator 10, the heater 34 is energized to generate heat. Here, by heating the heater 34 to a temperature higher than that of the refrigerant piping 33 , the temperature of the heat insulating door 20 and the heat insulating door 21 can be further increased, and the effect of suppressing the occurrence of condensation can be remarkably made.

The heat transfer tape 44 is, for example, an adhesive tape made of aluminum foil, which covers the heater 34 from behind, and adheres the heater 34 to the rear surface of the front plate 35 . Thereby, the heat generated from the heat transfer belt 44 can be efficiently conducted to the front plate 35 .

In addition, by making the rear surface of the front plate 35 protrude rearward in a wall shape, two wall-shaped portions 50 are formed. The refrigerant piping 33 and the heat transfer member 36 are arranged in a region partitioned by the wall-like portion 50 in the left-right direction. Furthermore, the heater 34 is arranged at a position outside the wall-shaped portion 50 in the left-right direction.

When the high-temperature refrigerant flows through the refrigerant piping 33 under the operating conditions of the refrigerator 10 , the heat generated from the high-temperature refrigerant diffuses in the left-right direction in the heat transfer member 36 and is well conducted forward. After that, the heat passing through the front plate 35 is conducted to the heat insulating door 20 and the heat insulating door 21 through the door seal 40 and the door seal 41 shown in FIG. 4(A) . Furthermore, in the present embodiment, the heat generated from the energized heater 34 is also conducted to the heat insulating door 20 and the heat insulating door 21 via the front plate 35 , the door seal 40 , and the door seal 41 .

In this way, the surfaces of the heat-insulating door 20 and the heat-insulating door 21 are effectively heated by the heat generated from the refrigerant piping 33 and the heater 34, and the occurrence of condensation is suppressed. In addition, since the heat insulating portion 43 is disposed on the rear side of the refrigerant piping 33, the heat generated from the refrigerant piping 33 and the heater 34 is suppressed from being conducted to the rear, and more heat is conducted forward, so that the The heat insulation door 20 and the heat insulation door 21 are heated up.

FIG. 5(A) is a front view showing the front surface portion 32 , and FIG. 5(B) is a side cross-sectional view showing the front surface portion 32 .

Referring to FIG. 5(A) , the heater 34 and the heat transfer member 36 are arranged on the front surface of the front surface main body portion 37 . The heater 34 is arranged to reciprocate in the up-down direction, and its upper end is connected to a wire harness arranged inside the refrigerator 10 through a connector 45 arranged near the upper end of the front main body portion 37 .

Furthermore, the discontinuous portion 363 is formed by spacing the lower portion of the heat transfer member 36 . The heater 34 is wired around the discontinuous portion 363 in the left-right direction. By doing so, it is possible to prevent the heat transfer member 36 from colliding with the heater 34 and to improve the assemblability during manufacture.

5(B), the connector 45 is accommodated in the recessed part 48 which recessed the upper end vicinity of the front surface part 32 which is a part of the heat insulation box 11 toward the back. By doing so, it is not necessary to lead the heater 34 and its wiring to a movable part such as a hinge of the heat insulating door 21 , so that the wiring connected to the heater 34 can be prevented from being disconnected under the usage condition of the refrigerator 10 .

6(A) is a cross-sectional view showing the front surface portion 32 , FIG. 6(B) is a front surface view showing the front surface portion 32 , and FIG. 6(C) is a side cross-sectional view partially showing the front surface portion 32 .

Referring to FIG. 6(A) , the basic structure of the front surface portion 32 shown in this figure is the same as the structure shown in FIG. 4(B) , but the structure for accommodating the heater 34 is different.

Specifically, the first concave portion 38 is formed by recessing the center of the front surface in the left-right direction of the front surface main body portion 37 in a concave shape toward the rear. Further, two second concave portions 39 are formed by recessing the vicinity of both ends of the front surface in the left-right direction of the front surface main body portion 37 in a concave shape toward the rear.

In the first concave portion 38, the heat insulating portion 43, the refrigerant piping 33, and the heat transfer member 36 are accommodated from the rear side. Further, the heaters 34 are respectively accommodated in the second concave portions 39 . By accommodating the heater 34 in the second concave portion 39 , the position of the heater 34 can be accurately defined on the front surface of the front surface portion 32 . In addition, the heater 34 is arranged on the rear side of the front plate 35 . In this way, the heat generated from the refrigerant piping 33 and the heater 34 is conducted forward through the front plate 35, and the surfaces of the heat insulating door 20 and the heat insulating door 21 shown in FIG. 4(A) are efficiently heated up.

6(B) , the second concave portion 39 is formed as a substantially rectangular groove elongated in the vertical direction on the front surface of the front surface portion 32 . The above-described heater 34 is wound in a substantially rectangular shape along the second concave portion 39 .

Referring to FIG. 6(C) , the concave portion 48 is formed by recessing the upper surface of the front surface main body portion 37 in a substantially rectangular shape downward. The heater 34 and the connector 45 connected to the wire harness are accommodated in the recessed portion 48 . Here, the connector 45 is omitted, and the heater 34 may be directly connected to a main board not shown here via a wire harness not shown.

FIG. 7(A) is a cross-sectional view showing the front surface portion 32 , and FIG. 7(B) is a side cross-sectional view partially showing the front surface portion 32 .

Referring to FIG. 7(A) , a grip portion 46 is formed on the left side surface of the heat insulating door 21 . The grip portion 46 is formed of a synthetic resin plate bent into a predetermined shape, and forms the left side surface of the heat insulating door 21 . In addition, the grip portion 46 has a concavo-convex shape that is easy to grip, so that the user can easily perform the opening and closing operations of the heat insulating door 21 .

Referring to FIG. 7(B) , the heat transfer tape 47 covers the outer surface of the grip portion 46 . Here, the heat transfer zone 47 is indicated by a thick line. The rear end portion of the grip portion 46 faces the front surface of the aforementioned front surface portion 32 . The rear portion of the heat transfer tape 47 covers the opposing surface 49 from the rear. In this way, the heat generated from the refrigerant piping 33 and the heater 34 (see FIG. 6(A) ) arranged in the front portion of the front surface portion 32 is favorably conducted from the heat transfer belt 47 covering the portion of the opposing surface 49 . Therefore, the temperature of the surface portion of the grip portion 46 is effectively increased, and the occurrence of condensation on the surface of the grip portion 46 is suppressed.

FIG. 8 is a perspective view showing a specific structure of the refrigerant piping 33 . As described above, the refrigerant piping 33 is built in the front surface portion 32 . Moreover, the refrigerant|coolant piping 51 extended in the left-right direction is arrange|positioned inside the front surface vicinity of the heat insulating wall 27 shown in FIG. 3. FIG. Here, the connector 45 shown in FIG. 6(C) is arranged between the upper end portion of the refrigerant pipe 33 and the refrigerant pipe 51 . By doing so, it is possible to prevent the connector 45 from colliding with the refrigerant piping 51 . In addition, even if the thickness of the heat insulating member is reduced to the indoor side in order to accommodate the heater connector or wiring by the refrigerant piping 33 and the refrigerant piping 51, the peripheral portion (accommodating portion) of the front panel 35 can be Prevent condensation.

According to the present embodiment, the main effects described below can be achieved.

Referring to FIG. 4(B) , according to the refrigerator 10 of the present invention, the occurrence of condensation on the heat insulating door 20 can be suppressed. Specifically, the temperature of the heat insulating door 20 is increased via the front surface portion 32 of the heat insulating box 11 by the refrigerant piping 33 and the heater 34 arranged inside the front surface portion 32 , whereby the heat insulating door 20 can be prevented from being heated. Condensation occurred on the surface of 20. In particular, the handle portion of the heat-insulating door 20 is relatively thin compared to other portions of the heat-insulating door 20 , which is a condition under which condensation is likely to occur under the operating state of the refrigerator 10 . In the present embodiment, the heat generated from the refrigerant piping 33 and the heater 34 is well conducted to the heat insulating door 20 via the heat transfer member 36 and the front plate 35 , thereby preventing condensation from occurring on the handle portion of the heat insulating door 20 . The same is true for the heat insulating door 21 .

Furthermore, referring to FIG. 2(B) , in the double-opening refrigerator 10 having the heat-insulating door 20 and the heat-insulating door 21 , the occurrence of condensation on the heat-insulating door 20 and the heat-insulating door 21 can be suppressed.

Referring to FIGS. 4(A) and 4(B) , since the front plate 35 is in close contact with the

heat insulating doors

20 and 21, the heat generated from the refrigerant piping 33 and the heater 34 can be efficiently conducted to the heat insulating door via the front plate 35 20, 21.

Referring to FIG. 4(B) , the heat generated from the refrigerant piping 33 and the heater 34 can be more efficiently conducted to the

heat insulating doors

20 and 21 via the front plate 35 and the heat transfer member 36 .

Referring to FIG. 6(A) , by arranging the heater 34 and the refrigerant piping 33 in a separate concave portion, the heater 34 and the refrigerant piping 33 can be separately arranged in the front surface portion 32 , and conduction can be conducted to the

heat insulation doors

20 and 21 . lots of heat.

The present invention is not limited to the above-described embodiments, and various modifications can be implemented without departing from the gist of the present invention. In addition, the above-mentioned forms can be combined with each other.

For example, referring to FIG. 4(B) , the energization rate of the heater 34 can be changed according to environmental conditions such as external humidity and external temperature. For example, under environmental conditions in which condensation is unlikely to occur on the heat insulating door 21 or the heat insulating door 20 , specifically, when the outside humidity is low or the outside temperature is high, the energization to the heater 34 can be reduced or eliminated. . Thereby, the generation of dew condensation on the heat insulating door 21 or the heat insulating door 20 can be suppressed only by the heat generated from the refrigerant piping 33, and the energy consumption of the heater 34 can be reduced.

Claims

A refrigerator, characterized in that, comprising:

A heat-insulating box with a storage compartment formed therein;

an insulated door closing the front opening of the storage compartment; and

a refrigeration cycle for cooling the storage compartment,

A refrigerant pipe and a heater are provided inside the front surface portion of the heat insulating box, and the refrigerant pipe flows the high-temperature refrigerant used in the refrigeration cycle.
The refrigerator according to claim 1, wherein,

The insulated door includes:

a first heat insulating door that is rotatably attached to one end side in the left-right direction on the front surface of the heat insulating box; and

The second heat insulating door is rotatably attached to the other end side in the left-right direction on the front surface of the heat insulating box,

The left-right direction inner end part of the said 1st heat insulation door and the left-right direction inner edge part of the said 2nd heat insulation door are contact|abutted to the said front surface part of the said heat insulation box.
The refrigerator according to claim 1 or 2, characterized in that,

The front surface portion of the heat insulating box has a front plate exposed forward,

The refrigerant piping and the heater are arranged behind the front plate.
The refrigerator according to claim 3, wherein,

A heat transfer member is arranged between the refrigerant piping, the heater, and the front plate.
The refrigerator according to claim 1, wherein,

The front surface portion has a front surface body portion made of synthetic resin,

The front surface main body has a first concave portion in which the refrigerant pipe is accommodated, and a second concave portion in which the heater is accommodated.
The refrigerator according to claim 4, wherein,

The heat transfer member is configured as a laminate including a metal layer arranged on the rear side and a resin layer arranged on the front side.
The refrigerator according to claim 4, wherein,

It also includes a heat transfer belt covering the heater from the rear, the heater is pasted on the rear surface of the front plate, one end of the heat transfer belt is in contact with the heat transfer member, and the other end is in contact with the front plate.
The refrigerator according to claim 4, wherein,

The rear surface of the front plate protrudes rearwardly in a wall-like shape to form two wall-like parts, the refrigerant piping and the heat transfer member are arranged in a region partitioned by the wall-like parts in the left-right direction, and the heater is located in the It is arrange|positioned in the position outside the wall-shaped part in the left-right direction.
The refrigerator according to claim 7, wherein,

A grip portion is formed on the side surface of the heat insulating door, and the heat transfer belt covers the outer side surface of the grip portion.
The refrigerator according to claim 1, wherein,

The heater is arranged to reciprocate in the up-down direction, and the upper end of the heater is connected to a wiring harness arranged inside the refrigerator through a connector arranged at the upper end of the main body portion of the front surface, and the connector is accommodated in a part of the heat insulating box. The upper end of the front surface part is recessed toward the rear.