JP2016031166A - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the adhesion of frost on a side plate of a cooler.SOLUTION: A refrigerator comprises: a heat insulating box body 10 forming a stockroom 5; a cooler accommodation compartment 8 accommodating a cooler 7 in rear of the stockroom 5; a partition portion 38 separating the stockroom 5 from the cooler accommodation compartment 8; a radiant heater 20 at a downward projection position of the cooler 7; a pipe heater 41 disposed to contact or to be proximate to the cooler 7; a refrigerant pipe 40 of the cooler 7; and a side plate 7b supporting the refrigerant pipe 40 and the pipe heater 41, the refrigerator comprising a side piece 43b outward of the side plate 7b and at least upstream in a cold flow direction, a lead wire 42 of the pipe heater 41 being supported by the side piece 43b along the cold flow direction.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a refrigerator.

  As a prior art of a refrigerator that saves power in a defrosting operation of a cooler, for example, there is JP 2011-7435 A (Patent Document 1).

  In the summary column of this patent document 1, “the refrigerator is disposed below the cooler 24, the cooler 24 that is a part of the refrigeration cycle, the pipe heater 41 that directly melts the frost attached to the cooler 24,” A radiant heater 15 that melts frost from below, and a control means (not shown) that controls energization of the pipe heater 41 and the radiant heater 15, and the control means starts energization of the pipe heater 41. Then, energization of the radiant heater 15 is started and the cooler 24 is defrosted. "

JP 2011-7435 A

  In the configuration as in Patent Document 1, generally, the lead wire connected to the end of the pipe heater is bundled near the metal side plate on either the left or right side of the cooler.

  However, if there is a lead wire in the side plate portion, air collides with the lead wire to generate turbulent flow (stagnation), and frost tends to grow.

  In Patent Document 1, the side plate and the lead wire are not sufficiently considered.

  Then, the objective of this invention is providing the refrigerator which can suppress adhesion of the frost to the side plate of a cooler.

  In order to solve the above problems, for example, the configuration described in the claims is adopted. The present application includes a plurality of means for solving the above-mentioned problems. To give an example, a heat insulating box that forms a storage chamber, a cooler storage chamber that stores a cooler at the back of the storage chamber, A partition that divides the storage chamber and the cooler storage chamber, a radiant heater at a lower projection position of the cooler, a pipe heater disposed in contact with or close to the cooler, and a refrigerant pipe of the cooler, The refrigerant pipe and a side plate that supports the pipe heater, and has a side piece outside the side plate and at least upstream in the flow direction of the cold air, and the lead wire of the pipe heater is It is supported by the said side piece so that the flow direction of cold air may be followed.

ADVANTAGE OF THE INVENTION According to this invention, adhesion of the frost to the side plate of a cooler can be suppressed.
Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

It is a front external view of the refrigerator which concerns on Embodiment 1 of this invention. It is XX sectional drawing of FIG. 1 showing the structure in the refrigerator which concerns on Embodiment 1 of this invention. It is a front view showing the structure in the store | warehouse | chamber of the refrigerator which concerns on Embodiment 1 of this invention. FIG. 3 is an enlarged explanatory view of a main part of FIG. 2. FIG. 4 is an enlarged explanatory diagram of main parts of FIG. 3. It is a perspective view of the cooler concerning Embodiment 1 of the present invention. It is principal part sectional drawing of the cooler periphery of the refrigerator which concerns on Embodiment 1 of this invention. It is a principal part perspective view of the cooler concerning Embodiment 1 of the present invention. It is a principal part perspective view of the cooler concerning Embodiment 2 of the present invention. It is a perspective view of the heat insulation block which concerns on Embodiment 2 of this invention. It is a principal part perspective view of the cooler concerning Embodiment 3 of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Embodiment 1)
First, the refrigerator which concerns on Embodiment 1 of this invention is demonstrated based on FIGS. FIG. 1 is a front external view of a refrigerator according to Embodiment 1 of the present invention. FIG. 2 is a cross-sectional view taken along the line XX of FIG. FIG. 3 is a front view illustrating a configuration inside the refrigerator of the refrigerator according to the first embodiment of the present invention. FIG. 4 is an enlarged explanatory view of the main part of FIG. FIG. 5 is an enlarged explanatory view of a main part of FIG.

  In FIG. 1, the refrigerator main body 1 has a refrigerator compartment 2, a lower freezer compartment 5, and a vegetable compartment 6 arranged from above. Further, the ice making chamber 3 and the upper freezing chamber 5 are provided side by side between the refrigerator compartment 2 and the lower freezing chamber 5. As an example, the refrigerator compartment 2 and the vegetable compartment 6 are storage rooms in a refrigeration temperature zone of approximately 3 to 5 ° C., and the ice making chamber 3, the upper freezer compartment 4 and the lower freezer compartment 5 are in a freezing temperature zone of approximately −18 ° C. It is a storage room.

  The front opening of the refrigerator compartment 2 is provided with refrigerator doors 2a and 2b with double doors (also called French doors) divided into left and right. The ice making room 3, the upper freezing room 4, the lower freezing room 5, and the vegetable room 6 include a drawer type ice making room door 3a, an upper freezing room door 4a, a lower freezing room door 5a, and a vegetable room door 6a. Further, a packing (not shown) is provided on the surface of each door on the storage chamber side so as to follow the outer edge of each door. When each door is closed, the outside air enters the storage chamber, and the storage chamber. It has a structure that suppresses cold air leakage from the air.

  The refrigerator main body 1 has a door sensor (not shown) that detects the open / closed state of the door provided in each storage room, and a state in which each door is determined to be open for a predetermined time (for example, 1 minute). When it exceeds (continuation), a means for notifying the user with an alarm is provided. Further, a temperature setting device (not shown) for setting the temperature of the refrigerator compartment 2 and the temperature of the upper freezer compartment 4 and the lower freezer compartment 5 is provided.

  In FIG. 2, the outside of the refrigerator body 1 and the inside of the refrigerator are thermally insulated by a heat insulating box 10 formed by filling a foam heat insulating material (foamed polyurethane foam) as a heat insulating layer between the inner box 1b and the outer box 1a. It is divided into. A plurality of vacuum heat insulating materials 23 are mounted in the heat insulating box 10 together with the foam heat insulating material. Although the vacuum heat insulating material 23 is mounted on the back side of the heat insulating box 10 in FIG. 2, the heat insulating box 10 may be mounted on the side, top and bottom surfaces of the heat insulating box 10 or in the door.

  In the refrigerator main body 1, the refrigerator compartment 2, the upper freezer compartment 4, and the ice making chamber 3 (shown in FIGS. 1 and 2) are partitioned in an adiabatic manner by the upper heat insulating partition portion 33, and the lower refrigeration portion by the lower heat insulating partition portion 34. Chamber 5 and vegetable compartment 6 are partitioned insulatively. In addition, as shown in FIG. 2, a horizontal partition 35 is provided in the upper part of the lower freezer compartment 5. The horizontal partition 35 partitions the ice making chamber 3 and the upper freezing chamber 4 and the lower freezing chamber 5 in the vertical direction. A vertical partition 36 (shown in FIG. 1) is provided between the refrigerator compartment doors 2a and 2b, and this vertical partition 36 is magnetized by the refrigerator compartment doors 2a and 2b, the ice making compartment door 3a, and the upper freezer compartment door 4a. It becomes a surface.

  Since the ice making chamber 3, the upper freezing chamber 4 and the lower freezing chamber 5 are all freezing temperature zones, the horizontal partitioning portion 35 and the vertical partitioning portion 36 have at least the refrigerator main body 1 to receive the seal member of each door. It only needs to be on the front side (shown in FIG. 1). That is, gas may move between the ice making chamber 3, the upper freezing chamber 4, and the lower freezing chamber 5 that are in the freezing temperature zone, or it may be a case where there is no heat insulation section. On the other hand, in the case where the upper freezer compartment 4 is a temperature switching chamber, it is necessary to perform heat insulation, and therefore the horizontal partition 35 and the vertical partition 36 extend from the front side of the refrigerator body 1 to the rear wall.

  A plurality of door pockets 27 are provided on the storage room side of the refrigerator compartment doors 2a and 2b (shown in FIG. 2). The refrigerator compartment 2 is provided with a plurality of shelves 31. The shelf 31 divides the refrigerator compartment 2 into a plurality of storage spaces in the vertical direction.

  As shown in FIG. 2, the upper freezer compartment 4, the lower freezer compartment 5, and the vegetable compartment 6 move in the front-rear direction together with a door provided in front of each storage compartment. In addition, storage containers 3b, 4b, 5b, and 6b are provided in the upper freezer compartment 4, the lower freezer compartment 5, and the vegetable compartment 6, respectively. The ice making room door 3a, the upper freezing room door 4a, the lower freezing room door 5a, and the vegetable room door 6a are each put on a handle portion (not shown) and pulled out to the front side, whereby the storage containers 3b, 4b, 5b, 6b can be pulled out.

  2 and 3, the refrigerator main body 1 of the present embodiment includes a cooler 7 as a cooling means. The cooler 7 (as an example, a fin tube type heat exchanger) is stored in a cooler storage chamber 8 provided on the back surface of the lower freezing chamber 5. In addition, a blower 9 (a propeller fan as an example) is attached as a blowing means in the cooler storage chamber 8 and above the cooler 7. Air cooled by heat exchange with the cooler 7 (hereinafter, low-temperature air heat-exchanged by the cooler 7 is referred to as “cold air”) is sent by the blower 9 via the refrigerator compartment air duct 11 and the freezer compartment air duct 12. , The refrigerator compartment 2, the vegetable compartment 6, the upper freezer compartment 4, the lower freezer compartment 5, and the ice making room 3 are sent to the respective storage rooms. The air blown to each of the storage chambers 2, 3, 4, 5, 6 is sent to the first air flow control means (refrigeration chamber damper 18) for controlling the air flow to the refrigeration temperature zone chamber and to the refrigeration temperature zone chamber. It is controlled by second air flow control means (freezer compartment damper 32) for controlling the air volume.

  Incidentally, the air ducts to the refrigerator compartment 2, the ice making room 3, the upper freezer room 4, the lower freezer room 5, and the vegetable room 6 are shaped as shown by broken lines in FIG. Is provided on the back side. Specifically, when the refrigerator compartment damper 18 is in the open state and the freezer compartment damper 32 is in the closed state, the cold air is blown into the refrigerator compartment 2 from the outlets 2c provided in multiple stages via the refrigerator compartment air duct 11. .

  As shown in FIG. 3, the cold air that has cooled the refrigerator compartment 2 passes through the refrigerator compartment return duct 14 from the refrigerator compartment return port 2 d provided in the lower part of the refrigerator compartment 2, and the lower right rear side of the lower heat insulating partition 34. Is sent to the vegetable compartment 6 from the vegetable compartment outlet 6c provided in the vegetable compartment. In addition, as shown in FIG. 2, the return cold air from the vegetable compartment 6 passes through the vegetable compartment return duct 16 from the vegetable compartment return duct inlet 16 b provided in front of the lower part of the lower heat insulating partition 34, and then returns to the vegetable compartment return duct. It returns to the lower part of the cooler storage chamber 8 from the outlet 16a.

  As another configuration, the refrigeration chamber return duct 14 (shown in FIG. 3) may be returned to the lower right side when viewed from the front of the cooler storage chamber 8 without communicating with the vegetable chamber 6. As an example in this case, a vegetable room air duct (not shown) is arranged at the front projection position of the refrigerator compartment return duct 14, and the cold air heat-exchanged by the cooler 7 is transferred from the vegetable room outlet 6 c to the vegetable room 6. It will blow directly.

  Moreover, it is good also as a structure which selectively controls whether the cold air of the refrigerator compartment return duct 14 is sent to the vegetable room 6 or the cooler storage room 8. In this case, for example, a configuration in which air blowing control means (for example, an electric damper) is provided in a part of the refrigerating room return duct 14 and the communication state and the closed state on the vegetable room 6 side and the cooler storage room 8 side are switched is exemplified.

  As shown in FIG. 2, a partition member 13 that partitions each storage chamber and the cooler storage chamber 8 is provided in front of the cooler storage chamber 8. The partition member 13 has an ice making chamber outlet 3c, an upper freezer compartment outlet 4c, and a lower freezer compartment outlet 5c. When the freezer damper 32 is open, heat is exchanged by the cooler 7. Cold air is blown by the blower 9 to the ice making chamber 3 and the upper freezing chamber 4 from the blowout ports 3c and 4c through the ice making chamber blowing duct (not shown) and the freezing chamber blowing duct 12, respectively. Further, the air is blown from the outlet 5 c to the lower freezer compartment 5 through the freezer compartment air duct 12.

  Generally, cold air having a low temperature with respect to the ambient temperature forms a downward flow from the upper side to the lower side. Therefore, by supplying more cold air to the upper side of the storage chamber, the storage chamber can be favorably cooled by the action of the downward flow. In this embodiment, although the freezer compartment damper 32 is provided, it considers so that the ventilation from the air blower 9 can be smoothly sent to the ice making room 3 or the upper freezer compartment 4 by installing this in the upper part of the air blower 9. ing. If the ice making chamber 3, the upper freezing chamber 4, and the lower freezing chamber 5 are configured to communicate with each other, the cooling effect by the downflow can be enhanced.

  The partition member 13 is provided with a freezer return port 15 at a position in the lower part of the lower freezer compartment 5, and the cold air that has cooled the upper freezer chamber 4, the lower freezer chamber 5, and the ice making chamber 3 is supplied to the freezer return port. It flows into the cooler storage chamber 8 through 15. The freezer compartment return port 15 has a width dimension substantially equal to the width of the cooler 7.

  In FIG. 4, in the refrigerator main body 1, a blower 9 is provided above the cooler 7, and a freezer compartment damper 32 is provided above the blower 9. In addition, an upper freezer compartment outlet 4c and an ice making compartment outlet 3c (also shown in FIG. 3) are provided above the freezer damper 32 to send cold air to the upper freezer compartment 4 located in the upper stage of the storage compartment in the freezing temperature zone. ing. The upper freezer compartment outlet 4c has the largest opening area among the outlets of the freezer compartment.

  In FIG. 5, the cold air that has cooled the refrigerating chamber 2 is provided on the side of the cooler storage chamber 8 as indicated by an arrow, and passes through the refrigerating chamber return duct 14 that communicates the refrigerating chamber 2 and the vegetable chamber 6. It flows into the vegetable compartment 6 through the vegetable compartment outlet 6c shown in FIG. The return cold air from the vegetable compartment 6 flows in from the vegetable compartment return duct inlet 16b (shown in FIG. 2), and as shown in FIG. 4, the vegetable compartment return duct 16 provided in the lower heat insulating partition 34 is passed through. Then, it flows into the cooler storage chamber 8 from a vegetable room return outlet 17 a (shown in FIG. 5) provided in front of the lower portion of the cooler storage chamber 8 and having a width approximately equal to the width of the cooler 7.

  On the other hand, as shown in FIG. 4, the cool air that has cooled the refrigeration temperature zone chamber is provided in the lower part of the partition portion 38 of the cooler storage chamber 8 that partitions the cooler storage chamber 8 and the refrigeration temperature zone chamber. It flows into the cooler storage chamber 8 through the freezer return port 15 having a width dimension substantially equal to the width of the cooler. A radiant heater 20, which is a glass tube heater, is provided below the cooler storage chamber 8. An upper cover 20 a (shown in FIG. 4) is provided above the radiant heater 20 in order to prevent defrost water from dripping onto the radiant heater 20.

  The frost adhering to the wall of the cooler 7 and the surrounding cooler storage chamber 8 is melted at the time of the defrosting operation, and the defrost water generated at that time is the eaves 21 ( (Shown in FIG. 4). The defrost water that has flowed into the basket 21 reaches the evaporating dish 19 disposed in the machine room 39 via the drain pipe 25, and generates heat from the condenser (not shown) and the compressor 22 disposed in the machine room 39. Can be evaporated.

  Further, as shown in FIG. 5, when viewed from the front of the cooler 7, the upper left part is a cooler temperature sensor 30 attached to the cooler 7, the refrigerating room 2 has a refrigerating room temperature sensor 28 (shown in FIG. 4), The lower freezer compartment 5 is provided with a freezer compartment temperature sensor 29 (shown in FIG. 4). By these temperature sensors 28, 29, and 30, the temperature of the cooler 7 (hereinafter referred to as the cooler temperature), the temperature of the refrigerator compartment 2 (hereinafter referred to as the refrigerator compartment temperature), and the temperature of the lower freezer compartment 5 (hereinafter referred to as the freezer). (Referred to as room temperature). Furthermore, the refrigerator body 1 includes an outside air temperature sensor (not shown) that detects the temperature outside the refrigerator. The vegetable room 6 is also provided with a vegetable room temperature sensor 37 (shown in FIG. 2).

  As an example of the control means, a control board 26 (shown in FIG. 2) on which a CPU, a memory such as a ROM and a RAM, an interface circuit, and the like are mounted is disposed on the top surface of the refrigerator body 1. The control board 26 is connected to the outside air temperature sensor, the cooler temperature sensor 30, the refrigerating room temperature sensor 28, the freezer room temperature sensor 29, and the vegetable room temperature sensor 37. Furthermore, the door 2a, 2b, 3a, 4a, 5a, 6a is connected to the door sensor that detects the open / closed state of each door, a temperature setter (not shown) provided on the inner wall of the refrigerator compartment 2, and the like.

  The control board 26 controls the ON / OFF of the compressor 22 according to a program pre-installed in the ROM, controls the respective actuators (not shown) that individually drive the refrigerator compartment damper 18 and the freezer compartment damper 32, and the blower 9 ON / OFF control, rotation speed control, and alarm ON / OFF control to notify the door open state are performed.

  Next, the configuration of the cooler will be described with reference to FIGS. FIG. 6 is a perspective view of the cooler according to the first embodiment of the present invention. FIG. 7 is a cross-sectional view of a main part around the cooler of the refrigerator according to the first embodiment of the present invention. FIG. 8 is a perspective view of a main part of the cooler according to the first embodiment of the present invention.

  In FIG. 6, the cooler 7 has a refrigerant pipe 40 in which a plurality of fins 7 a are inserted in a serpentine shape so as to have a plurality of stages in the vertical direction. The substantially U-shaped curved portions connecting the upper and lower stages located at both ends of the refrigerant pipe 40 are respectively supported by the side plates 7b and 7c, and the cooler 7 having a substantially rectangular outer shape is configured. Yes. An accumulator 40 a is attached to one end of the refrigerant pipe 40.

  The pipe heater 41 is disposed so as to be in contact with or close to the cooler 7, and as an example, is configured in a meandering manner so as to be positioned in a gap between the upper and lower fins 7a. Further, the substantially U-shaped curved portions that are located at both ends of the pipe heater 41 and connect the upper stage and the lower stage are respectively supported by the side plates 7b and 7c. As an example, the pipe heater 41 is formed by inserting a cord heater into an aluminum pipe. In the present embodiment, the frost attached to the cooler 7 is melted by the radiant heater 20 and the pipe heater 41 shown in FIG.

  In FIG. 7, a freezer compartment return port 15 that connects the lower freezer compartment 5 and the cooler compartment 8 is provided near the bottom of the bottom freezer compartment 5 and behind the storage container 5 b. The freezer return port 15 is an opening for returning the cold air that has cooled the upper freezer room 4, the lower freezer room 5, and the ice making room 3 into the cooler storage room 8, and has a width dimension substantially equal to the width of the cooler 7. It has become.

  In FIG. 8, side plates 7 b and 7 c are attached to both sides of the cooler 7 in order to hold the refrigerant pipe 40 and the pipe heater 41 through which many fins 7 a are inserted. FIG. 8 shows only the side plate 7b side. The side plate 7b is formed with a support part in which an opening for supporting the refrigerant pipe 40 through the hole is formed, a concave part for supporting the pipe heater 41, and the like.

  A connecting portion 41 a for connecting the lead wire 42 and the heater wire is provided at the end of the pipe heater 41. The connecting portion 41a is molded by wrapping the end portion of the heater wire and the end portion of the lead wire 42 with flexible silicone rubber or the like. The lead wire 42 is supported on the outer side of the side plate 7b by side pieces 43a and 43b that are spaced apart from each other. The side pieces 43a and 43b are made of resin, and a locking portion 43t provided integrally or separately with the side pieces 43a and 43b is fixed so as to sandwich a part of the refrigerant pipe 40.

  The side pieces 43a and 43b are provided with lead wire support portions 43c and 43d (for example, slits and notches), and the lead wire 42 is supported by the lead wire support portions 43c and 43d. The supported lead wire 42 is disposed along the cold air flow direction A (arrow direction).

  Thereby, in this embodiment, since the lead wire 42 is supported in the direction along the flow direction A of the cold air, it is difficult to cause a turbulent flow of the cold air. Therefore, generation | occurrence | production of the frost of the lead wire 42 and the side plate 7b vicinity can be suppressed.

  Furthermore, the side pieces 43a and 43b have the same size as the protruding dimension of the U-shaped portion (bend pipe) of the refrigerant pipe 40 protruding outward from the side plate 7b. As a result, a part of the outer space of the side plate 7b is blocked by the side pieces 43a and 43b, so that cold air intrusion into this portion is suppressed, and the lead wire 42, the side plate 7b, and the vicinity of the U-shaped portion of the refrigerant pipe 40 It is possible to suppress frost formation.

(Embodiment 2)
Next, Embodiment 2 will be described based on FIG. 9 and FIG. FIG. 9 is a perspective view of main parts of a cooler according to Embodiment 2 of the present invention. FIG. 10 is a perspective view of a heat insulation block according to Embodiment 2 of the present invention. In addition, about the structure similar to Embodiment 1, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  In the second embodiment, as shown in FIG. 9, the heat insulator 44 is disposed in the space between the side pieces 43 a and 43 b. The heat insulator 44 is disposed in a press-fit state as an example between the U-shaped portions (bend piping portions) of the refrigerant piping 41 positioned above and below.

  In FIG. 10, the heat insulator 44 includes a heat insulating material 44 a taking polyethylene as an example and a metal foil 44 b taking aluminum as an example. The reason why polyethylene or the like is used as the heat insulating material 44a is that it has excellent heat insulating properties and excellent flexibility.

  In other words, when the heat insulator 44 is disposed between the bend pipe portions of the refrigerant pipe 40, the heat insulator 44 is restored to its original shape simply by positioning the heat insulator 44 in a compressed state, so that the heat insulator 44 is reliably placed between the bend pipe portions. It can be fixed, and the mounting workability is good.

  Further, by configuring the heat insulating material 44a to be wrapped with the metal foil 44b, the heat of the pipe heater 41 and the radiant heater 20 is transferred to the metal foil 44b during the defrosting operation, and the frost adhering to the side plate 7b is efficiently processed. Can be dissolved.

  As described above, according to the present embodiment, the heat insulator 44 is disposed between the side pieces 43a and 43b provided outside the side plate 7b, thereby entering the space formed by the side plate 7b and the side pieces 43a and 43b. Frost formation can be further suppressed. In addition, the heat insulator 44 is flexible so that it can be easily assembled, and the heat of the pipe heater 41 can be efficiently transmitted to the side plate 7b by the metal foil 44b so that defrosting can be made efficient.

  In the present embodiment, the configuration on the side plate 7b side (the lead wire 42 side of the pipe heater 41) has been mainly described, but the same effect can be achieved by configuring the side plate 7c side in the same manner.

(Embodiment 3)
Next, Embodiment 3 will be described with reference to FIG. FIG. 11 is a perspective view of main parts of a cooler according to Embodiment 3 of the present invention.

  In FIG. 11, the side plate 7c that supports the refrigerant pipe 40 and the pipe heater 41 (arranged on the side opposite to the side plate 7b shown in FIGS. 8 and 9) is used to support the cooler 7 on the inner box 1b. The support portion 7d is provided integrally or separately.

  The support portion 7d is located in a space surrounded by the bend portion (U-shaped portion) of the pipe heater 41 and the side plate 7c. This is for positively receiving the heat of the pipe heater 41 by the support portion 7d and transmitting this heat to the side plate 7c to contribute to defrosting. That is, by positioning the support portion 7d in the vicinity of the inner periphery of the bend portion of the pipe heater 41, the heat of the pipe heater 41 can be transmitted from the support portion 7d to the side plate 7c side as efficiently as possible.

  In FIG. 11 showing the present embodiment, the side plate 7c opposite to the side plate 7b shown in FIGS. 8 and 9 is shown, but the heat insulator 44 is provided in the same manner as the side plate 7b.

  According to this embodiment, since the heat of the pipe heater 41 is efficiently transferred to the side plate 7c via the support portion 7d, the frost attached to the side plate 7c can be efficiently melted.

  Since it is configured as described above, the following effects can be obtained.

  That is, a heat insulating box that forms a storage chamber, a cooler storage chamber that stores a cooler at the back of the storage chamber, a partition that partitions the storage chamber and the cooler storage chamber, and a downward projection of the cooler A radiant heater at a position; a pipe heater disposed in contact with or in proximity to the cooler; a refrigerant pipe of the cooler; and a side plate that supports the refrigerant pipe and the pipe heater; And a lead piece of the pipe heater is supported by the side piece so as to be along the flow direction of the cold air.

  Thereby, since the cold air which tries to pass the outer side of a side plate is interrupted | blocked by the side piece, the amount of frost formation to a side plate can be suppressed. Moreover, by arranging the lead wire of the pipe heater along the traveling direction of the cold air, the turbulent flow of the cold air can be suppressed and frost formation on the side plate can be suppressed.

  A plurality of the side pieces are provided in the cold air flow direction.

  Thereby, support of a lead wire can be performed reliably.

  Moreover, the heat insulating body was arrange | positioned between the said some side piece.

  Thereby, the frost generated by the air which stagnates in the space formed between several side pieces can be suppressed.

  Moreover, the said heat insulating body comprised the heat insulating material which has flexibility in metal foil, and was comprised.

  Thereby, the attaching operation of the heat insulator is easy, and the metal foil becomes a heat conducting member, and the heat of the pipe heater can be efficiently transmitted to the side plate to be defrosted.

  Further, the side plate is provided with a support portion for supporting the cooler on the heat insulating box as a single body or separately, and the support portion is surrounded by the bend portion of the pipe heater and the side plate. Located in space.

  As a result, the heat of the pipe heater is indirectly received by the support portion, and this heat is efficiently transferred to the side plate and diffused, so that the frost attached to the side plate can be efficiently melted. .

  In addition, this invention is not limited to an above-described Example, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Also, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

DESCRIPTION OF SYMBOLS 1c ... Screw hole, 5 ... Lower stage freezer compartment (storage room), 7 ... Cooler, 7a ... Fin, 7b, 7c ... Side plate, 7d ... Support part, 8 ... Cooler storage room, 10 ... Heat insulation box, 20 ... Radiant heater, 38 ... Partition part, 41 ... Pipe heater, 41a ... Connection part, 42 ... Lead wire, 43a, 43b ... Side piece, 43c, 43d ... Lead wire support part, 43t ... Locking part, 44 ... Insulator , 44a ... heat insulating material, 44b ... metal foil

Claims (5)

A heat insulating box forming a storage room;
A cooler storage chamber for storing a cooler at the back of the storage chamber;
A partition for partitioning the storage chamber and the cooler storage chamber;
A radiant heater at a lower projection position of the cooler;
A pipe heater disposed in contact with or close to the cooler;
Refrigerant piping of the cooler;
The refrigerant pipe and a side plate that supports the pipe heater,
It is outside the side plate and has a side piece at least upstream in the flow direction of the cold air,
The refrigerator is characterized in that the lead wire of the pipe heater is supported by the side piece along the flow direction of cold air. The refrigerator according to claim 1,
A refrigerator, wherein a plurality of the side pieces are provided in the flow direction of the cold air. The refrigerator according to claim 2,
A refrigerator, wherein a heat insulator is disposed between the plurality of side pieces. The refrigerator according to claim 3,
The refrigerator is characterized in that the heat insulator is configured by wrapping a flexible heat insulating material in a metal foil. The refrigerator according to claim 1,
The side plate is provided with a support portion for supporting the cooler on the heat insulating box as a single body or separately,
The supporting part is located in a space surrounded by a bend part of the pipe heater and the side plate.