CN111771094A - Refrigerator with a door - Google Patents
Refrigerator with a door Download PDFInfo
- Publication number
- CN111771094A CN111771094A CN201980015499.4A CN201980015499A CN111771094A CN 111771094 A CN111771094 A CN 111771094A CN 201980015499 A CN201980015499 A CN 201980015499A CN 111771094 A CN111771094 A CN 111771094A
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- CN
- China
- Prior art keywords
- defrosting pipe
- defrosting
- vacuum heat
- refrigerator
- heat insulator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/14—Collecting or removing condensed and defrost water; Drip trays
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/06—Walls
Abstract
The freezing of the defrosting pipe can be prevented without damaging the heat insulation performance and the assembly performance of the whole refrigerator. The refrigerator is provided with: a case having an inner case forming a storage chamber and an outer case located outside the inner case to form an outer frame; a cooler that generates cold air; a compressor that operates the cooling machine; a drain pan for storing the defrosting water generated by the cooler; a defrosting pipe for making the defrosting water flow to the drain pan; a first vacuum heat insulating material fixed to the outer box; and a second vacuum heat insulator fixed to the inner box, wherein the cooler, the compressor, and the defrost water pipe are located between the inner box and the outer box, the second vacuum heat insulator is provided between the inner box and the defrost pipe, and the second vacuum heat insulator is smaller than the first vacuum heat insulator.
Description
Technical Field
The present invention relates to a refrigerator, and more particularly, to a defrost water drainage structure and a vacuum heat insulator provided between an inner box and an outer box of the refrigerator.
Background
Many proposals have been made for refrigerators and refrigeration systems having a vacuum heat insulator. For example, patent document 1 proposes a configuration in which: a vacuum heat insulating material is provided between the outer box and a defrosting pipe in the rigid polyurethane foam provided between the outer box and the inner box. The heat preservation of the storage chamber is realized by the vacuum heat insulation material, thereby inhibiting the operation of the cooler and the compressor, and inhibiting the power consumption.
Further, patent document 2 proposes a structure in which: a vacuum heat insulating material is provided between the inner box and a defrosting pipe, a pipe, etc. in the rigid polyurethane foam provided between the outer box and the inner box. The vacuum heat insulating material is used for realizing the heat preservation of the defrosting water, thereby preventing the defrosting water from being cooled and frozen due to the influence of the temperature in the storage chamber.
Patent document 1: japanese patent laid-open No. 2005-164193
Patent document 2: japanese patent laid-open publication No. 2004-101028
In the refrigerator of patent document 1, the heat preservation of the storage room can be achieved by the vacuum heat insulator, but there are problems as follows: the defrosting water is cooled and frozen by the influence of the temperature in the storage chamber.
In the refrigerator of patent document 2, in order to avoid interference between the inner box to which the vacuum heat insulator is fixed and peripheral components, the shape is complicated, and it is difficult to secure the holding force of the adhesive. Further, there is a problem that a plurality of small vacuum heat insulators are required to ensure heat insulation.
Disclosure of Invention
The present invention has been made to solve the above-described problems, and can prevent freezing of the defrosting pipe without impairing the heat insulation and the assembling performance of the entire refrigerator.
The refrigerator of the present invention comprises: a case having an inner case forming a storage chamber and an outer case located outside the inner case to form an outer frame; a cooler that generates cold air; a compressor that operates the cooling machine; a drain pan for storing the defrosting water generated by the cooler; a defrosting pipe for making the defrosting water flow to the drain pan; a first vacuum heat insulating material fixed to the outer box; and a second vacuum heat insulator fixed to the inner box, wherein the cooler, the compressor, and the defrost water pipe are located between the inner box and the outer box, and the second vacuum heat insulator is provided between the inner box and the defrost pipe, and is smaller than the first vacuum heat insulator.
According to the refrigerator of the present invention, the first vacuum heat insulator fixed to the outer box and the second vacuum heat insulator fixed to the inner box are provided, and the second vacuum heat insulator is made smaller in size than the first vacuum heat insulator. Therefore, the freezing of the defrosting pipe can be prevented without impairing the heat insulation performance and the assembling performance of the entire refrigerator.
Drawings
Fig. 1 is a front view of a refrigerator according to embodiment 1 of the present invention.
Fig. 2 is a sectional view of the refrigerator according to embodiment 1 of the present invention as viewed from the side.
Fig. 3 is a sectional view of the refrigerator according to embodiment 2 of the present invention as viewed from the side.
Fig. 4 is a sectional view of the periphery of the freezer compartment of the refrigerator according to embodiment 3 of the present invention as viewed from the side.
Fig. 5 is a view schematically showing a cross section of the refrigerator according to embodiment 4 of the present invention as viewed from the side.
Fig. 6 is an enlarged view of the periphery of the defrosting pipe of the refrigerator according to embodiment 4 of the present invention.
Fig. 7 is a perspective view of a defrosting pipe cover provided with a heater for defrosting pipes.
Fig. 8 is an expanded view of the defrosting pipe heater.
Detailed Description
Fig. 1 is a front view of a refrigerator 1 according to embodiment 1 of the present invention. As shown in fig. 1, refrigerator 1 includes a plurality of doors on a front surface thereof, and includes refrigerating compartment 100, switching compartment 200, ice making compartment 300, vegetable compartment 400, and freezing compartment 500. The chambers are also referred to as storage chambers. Refrigerating compartment 100 includes opening/closing door 11, and is disposed at the uppermost portion of refrigerator 1. The switching chamber 200 is disposed below the refrigerating chamber 100, and includes a pull-out door 12, and the switching chamber 200 can be switched between a freezing temperature zone of-18 ℃ and a soft freezing temperature zone of-7 ℃. The ice making compartment 300 includes the drawer door 13 and is disposed in parallel with the switching compartment 200. The vegetable compartment 400 includes the drawer door 14, and is disposed below the switching compartment 200 and the ice making compartment 300. Freezer compartment 500 includes a drawer door 15 and is disposed at the lowermost portion of refrigerator 1. The temperature of each storage chamber can be adjusted, for example, in the operation unit 10. The refrigerator 1 may be of a type without the switching chamber 200 or the ice making chamber 300, and is not particularly limited.
Fig. 2 is a sectional view of the refrigerator 1 according to embodiment 1 of the present invention as viewed from the side. As shown in fig. 2, the refrigerator 1 includes a cabinet 50, and the cabinet 50 includes an inner cabinet 51 in which a storage compartment is formed, and an outer cabinet 52 located outside the inner cabinet 51 to form an outer frame. The refrigerator 1 is further provided with a cooler 17, a compressor 19, and an air blowing fan 18 between the inner box 51 and the outer box 52.
A first vacuum heat insulator 54 is fixed to the outer box 52, and a second vacuum heat insulator 55 is fixed to the inner box 51. Polyurethane foam 16 is filled between the inner box 51 and the outer box 52, and the first vacuum heat insulator 54, the second vacuum heat insulator 55, and the polyurethane foam 16 suppress heat intrusion into the storage compartments. The polyurethane foam 16 may be, for example, a rigid polyurethane foam.
The cooler 17 generates cold air for cooling each storage compartment. A machine chamber 24 is formed between inner box 51 and outer box 52 at a position adjacent to freezing chamber 500, and compressor 19 is housed in machine chamber 24. The cooler 17 is disposed above the machine room 24 in which the compressor 19 is disposed, and generates cold air by operating the compressor 19. The cold air generated by the cooler 17 is sent to each storage compartment by the air sending fan 18. The temperature of each storage chamber is detected by a thermistor, not shown, provided inside each storage chamber, and is controlled so as to be a preset temperature by adjusting the opening degree of a damper, not shown, the output of the compressor 19, and the air blowing amount of the air blowing fan 18. Each storage room is further provided with a food rack 20, a food storage box 21, and the like to divide a storage space.
A defrosting heater 22, a defrosting pipe 53, and a drain pan 23 are provided between the cooler 17 and the compressor 19. The defrosting heater 22 is disposed below the cooler 17 and melts the frost adhering to the cooler 17. The defrosting pipe 53 is a pipe through which defrosting water passes and which leads from the lower portion of the cooler 17 to the machine chamber 24. The drain pan 23 stores defrosting water, is located below the defrosting pipe 53, and is disposed on the upper surface of the compressor 19. The defrosting pipe 53 may be provided to connect the cooler 17 and the drain pan 23.
The first vacuum insulation material 54 disposed in the outer box 52 has a planar shape, and covers the rear surfaces of the refrigerating compartment 100, the switching compartment 200, the ice making compartment 300, and the vegetable compartment 400. The first vacuum heat insulator 54 is not disposed between the outer box 52 and the machine compartment 24 adjacent to the freezing compartment 500. The first vacuum heat insulator 54 is bonded to the outer box 52 with an adhesive or the like.
The second vacuum heat insulator 55 disposed in the inner box 51 is located between the freezing chamber 500, the defrosting pipe 53, and the machine room 24. The second vacuum heat insulator 55 is smaller in size than the first vacuum heat insulator 54, and is disposed so that a part of the second vacuum heat insulator 55 is formed in a curved shape so as to follow the shape of the inner box 51. Here, the size of the first vacuum heat insulator 54 or the second vacuum heat insulator 55 refers to the length or the surface area in the vertical direction, the horizontal direction, and the thickness direction in the state before the second vacuum heat insulator 55 is bent. The second vacuum heat insulator 55 is bonded to the inner case 51 by an adhesive or the like so as not to interfere with peripheral members such as the defrosting pipe 53 and the machine room 24.
During the operation of the refrigerator 1, if the temperature around the cooler 17 is low, frost may adhere to the cooler 17. The frost attached to the cooler 17 is melted by the defrosting heater 22 and turns into defrosting water. The defrost water passes through the defrost pipe 53 located between the cooler 17 and the drain pan 23, and is stored in the drain pan 23 disposed on the upper surface of the compressor 19. The defrost water is evaporated by the heat of the compressor 19 and discharged from a discharge port 25 provided in the machine chamber 24.
The defrosting pipe 53 through which defrosting water passes is thermally insulated from the low-temperature freezing chamber 500 by the second vacuum heat insulator 55 provided between the defrosting pipe and the inner box 51. Therefore, the defrosting water can be suppressed from being cooled due to the influence of the temperature of the freezing chamber 500, and the heat input to the freezing chamber 500 from the compressor 19 and the outside air can also be suppressed.
Since the first vacuum heat insulator 54 is not provided between the outer box 52 and the defrosting pipe 53 and the machine chamber 24, the heat insulation between the defrosting pipe 53 and the machine chamber 24 and the outside air is low. Therefore, heat of the compressor 19 disposed in the machine chamber 24 can be dissipated to the outside of the refrigerator 1, and heat input from the outside air to the defrosting pipe 53 can be easily increased.
The first vacuum heat insulator 54 is large in size and planar, so that it is easy to fix it, and the adhesive surface is large, so that the adhesive force can be maintained. The second vacuum heat insulator 55 is smaller in size and therefore smaller in weight than the first vacuum heat insulator 54, and even when the contact area between the second vacuum heat insulator 55 and the inner box 51 is difficult to increase, peeling due to aging or the like can be prevented.
The refrigerator 1 of embodiment 1 described above includes: a first vacuum heat insulator 54 fixed to the outer case 52; and a second vacuum heat insulator 55 which is disposed between the inner box 51 and the defrosting pipe 53 and has a smaller size than the first vacuum heat insulator 54. Therefore, the first vacuum heat insulator 54 and the second vacuum heat insulator 55 can be bonded reliably. In addition, heat input from the outside air to each storage chamber can be suppressed. Further, since the first vacuum heat insulator 54 is not provided between the defrosting pipe 53 and the outer box 52 and between the machine chamber 24 and the outer box 52, heat generated from the compressor 19 can be efficiently dissipated to the outside of the refrigerator 1, heat input from the outside air to the defrosting pipe 53 can be increased, and freezing of defrosting water can be suppressed.
Further, since second vacuum heat insulator 55 is located between inner box 51 and defrost pipe 53, defrost water flowing through defrost pipe 53 can be suppressed from being cooled and frozen due to the influence of the temperature of freezer compartment 500.
Further, since second vacuum heat insulator 55 is located between inner box 51 and machine room 24 in which compressor 19 is disposed, it is possible to suppress heat input from compressor 19 and the outside air to freezer compartment 500, and to suppress power consumption of refrigerator 1.
Further, by forming the second vacuum heat insulator 55 smaller than the first vacuum heat insulator 54 into a curved shape along the shape of the machine chamber 24, the contact surface with the inner box 51 formed so as not to interfere with peripheral components such as the defrosting pipe 53 and the machine chamber 24 can be increased. Therefore, the adhesion between the second vacuum heat insulator 55 and the inner box 51 can be improved, and the second vacuum heat insulator 55 can be prevented from being peeled off due to aging or the like. Further, since it is not necessary to divide the second vacuum heat insulator 55 into a plurality of parts, it is possible to improve the coverage, improve the heat insulating property, and suppress the deterioration of the workability.
The first vacuum heat insulator 54 is not only located between the outer box 52 and the compressor 19, but also located between the outer box 52 and the defrosting pipe 53. Therefore, the heat generated from the compressor 19 is efficiently dissipated to the outside of the refrigerator 1, and the power consumption of the refrigerator 1 can be suppressed.
Embodiment 2.
Fig. 3 is a sectional view of the refrigerator 1 according to embodiment 2 of the present invention as viewed from the side. The basic configuration is the same as that of embodiment 1, but the configuration of the defrosting pipe 53 and the first vacuum heat insulator 54 is different from that of embodiment 1.
As shown in fig. 3, the defrosting pipe 53 of the refrigerator 1 according to embodiment 2 includes a defrosting pipe heater 56 energized in accordance with the operating state of the refrigerator 1 and the surrounding environment on the inner surface. The defrosting pipe heater 56 is preferably fixed to the defrosting pipe 53.
The first vacuum heat insulator 54 covers the rear surfaces of the refrigerating compartment 100, the switching compartment 200, the ice making compartment 300, and the vegetable compartment 400, and is fixed to the outer box 52 so as to extend between the defrosting pipe 53 and the outer box 52. However, the first vacuum heat insulator 54 does not cover the machine chamber 24 having the compressor 19.
The frost adhered to the cooler 17 is melted by the defrosting heater 22, reaches the defrosting pipe 53 as defrosting water, and is stored in the drain pan 23 through the defrosting pipe 53 while heat is input from the defrosting pipe heater 56 provided in the defrosting pipe 53. Then, the defrost water is evaporated by the heat of the compressor 19 and discharged to the outside.
By providing the defrosting pipe heater 56, the heat input to the defrosting pipe 53 is increased. Accordingly, even when the temperature of the defrosting pipe 53 is low due to the cold air from each storage compartment, the defrosting water can be prevented from being cooled and frozen in the defrosting pipe 53.
Further, a first vacuum heat insulator 54 is disposed between the defrosting pipe 53 and the outer box 52, and insulates the defrosting pipe 53 from the outside air. Therefore, the heat of the defrosting pipe heater 56 is efficiently input to the defrosting water, and the heat radiation to the outside air can be suppressed.
The refrigerator 1 according to embodiment 2 described above includes the defrosting pipe heater 56 fixed to the defrosting pipe 53, and the first vacuum heat insulator 54 is located between the defrosting pipe 53 and the outer box 52. This can suppress heat dissipation from the heater 56 for defrosting pipe to the outside air, and can efficiently input heat to the defrosting water in the defrosting pipe 53, thereby suppressing power consumption.
Further, since the first vacuum heat insulator 54 is not positioned between the outer box 52 and the compressor 19, heat generated from the compressor 19 can be efficiently dissipated to the outside of the refrigerator 1, and power consumption of the refrigerator 1 can be suppressed.
Embodiment 3.
Fig. 4 is a sectional view of the periphery of the freezer compartment 500 of the refrigerator 1 according to embodiment 3 of the present invention as viewed from the side. The basic structure is the same as embodiment 1, but the shape of the second vacuum heat insulator 55 is different from embodiment 1.
As shown in fig. 4, in the refrigerator 1 according to embodiment 3 of the present invention, the second vacuum heat insulator 55 is formed with a first concave shape 55a and a second concave shape 55 b.
The first concave shape 55a of the second vacuum heat insulator 55 is formed on the contact surface between the second vacuum heat insulator 55 and the inner box 51. The inner box 51 in which the second vacuum heat insulator 55 is disposed is formed with a convex shape 51a, and the second vacuum heat insulator 55 is fixed to the inner box 51 by engaging the convex shape 51a with the first concave shape 55 a.
The second concave shape 55b of the second vacuum heat insulator 55 is formed on the surface opposite to the contact surface of the second vacuum heat insulator 55 with the inner box 51. The second concave shape 55b is provided at a portion where the inner case 51 and the machine chamber 24 are close to each other. The first concave shape 55a and the second concave shape 55b are provided separately so as not to overlap on the projection surface.
The second vacuum heat insulator 55 is disposed along the inner case 51 having the convex shape 51 a. The first concave shape 55a of the second vacuum heat insulator 55 engages with the convex shape 51a formed in the inner box 51 to position the second vacuum heat insulator 55. In this state, the second vacuum heat insulator 55 and the inner case 51 are bonded and fixed by an adhesive or the like.
The opposite surface of the second vacuum heat insulator 55 fixed to the inner box 51 to the surface in contact with the inner box 51 is covered with the urethane foam 16. The second concave shape 55b provided in the second vacuum heat insulator 55 serves as a flow path of the urethane foam 16, and the urethane foam 16 is uniformly filled in order to improve fluidity.
The structure of the defrosting pipe heater 56 according to embodiment 2 may be combined with the structures of the first concave shape 55a and the second concave shape 55b according to embodiment 3.
The refrigerator 1 according to embodiment 3 described above has the first concave shape 55a on the contact surface of the second vacuum heat insulator 55 with the inner box 51. Therefore, the contact surface between the second vacuum heat insulator 55 and the inner box 51 can be increased. Further, since the first concave shape 55a can be used as a reference for the fixed position of the second vacuum heat insulator 55 with respect to the inner box 51, positioning at the time of bonding work is facilitated, and the second vacuum heat insulator 55 can be installed with high dimensional accuracy as planned.
The second vacuum heat insulator 55 has a second concave shape 55b on the surface opposite to the surface in contact with the inner box 51. Therefore, the second vacuum heat insulator 55 and the machine chamber 24 can be prevented from interfering with each other or from extremely approaching each other at a close portion, and a flow path of the urethane foam 16 can be sufficiently ensured. This improves the fluidity and filling property of urethane foam 16, reduces the thermal influence on freezer compartment 500 from machine compartment 24, and can reduce power consumption.
The first concave shape 55a and the second concave shape 55b are formed at separate positions not overlapping on the projection surface. Therefore, the second vacuum heat insulator 55 is extremely thin, and thus the heat insulation performance can be prevented from being impaired, and the workability of attaching the second vacuum heat insulator 55 can be improved, and the flowability and filling property of the urethane foam 16 can be improved.
Further, the convex shape 51a formed on the inner box 51 is engaged with the first concave shape 55a formed on the contact surface between the inner box 51 and the second vacuum heat insulator 55, whereby positioning at the time of bonding work can be made easier.
Embodiment 4.
Fig. 5 is a side view schematically showing a cross section of the refrigerator 1 according to embodiment 4 of the present invention, and fig. 6 is an enlarged view of the periphery of the defrosting pipe 53 of the refrigerator 1 according to embodiment 4 of the present invention. The basic configuration of embodiment 4 is the same as embodiments 1 to 3, but the configuration around the defrosting pipe 53 is different from embodiments 1 to 3.
As shown in fig. 5 and 6, the refrigerator 1 according to embodiment 4 of the present invention includes a defrost pipe cover 58 on the outer peripheral side of the defrost pipe 53 located between the first vacuum heat insulator 54 provided in the outer box 52 and the second vacuum heat insulator 55 provided in the inner box 51. The defrosting pipe cover 58 has a cylindrical shape, and the defrosting pipe heater 56 is disposed on the outer periphery. The defrosting pipe cover 58 and the defrosting pipe heater 56 are located between the first vacuum heat insulator 54 and the second vacuum heat insulator 55. The defrosting pipe cover 58 and the defrosting pipe heater 56 are surrounded by the urethane foam 16 filled between the defrosting pipe 53 and the first vacuum heat insulator 54, and between the defrosting pipe 53 and the second vacuum heat insulator 55.
The defrosting pipe cover 58 is disposed so as to cover a joint portion 53a between the defrosting pipe 53 and the cooling chamber 57, and the cooling chamber 57 is located above the defrosting pipe 53 and accommodates the cooler 17 and the defrosting heater 22 therein. The defrosting pipe cover 58 is disposed so as to cover a joint portion 53b between the defrosting pipe 53 and the machine chamber 24, and the machine chamber 24 is located below the defrosting pipe 53.
The drain generated in the cooling chamber 57 passes through the defrosting pipe 53 from the lower portion of the cooling chamber 57, and is stored in the drain pan 23 disposed in the machine chamber 24. At this time, if there is a gap at the joint 53a between the cooling chamber 57 and the defrosting pipe 53 or at the joint 53b between the defrosting pipe 53 and the machine chamber 24, the drain may leak through the gap. Even in such a case, the outside of the joint portion 53a and the joint portion 53b is covered with the defrost piping cover 58, and therefore the drain does not enter the urethane foam 16.
In fig. 6, the defrosting pipe cover 58 is illustrated as one member covering a joint portion 53a between the defrosting pipe 53 and the cooling chamber 57 and a joint portion 53b between the defrosting pipe 53 and the machine chamber 24. The defrosting pipe cover 58 is not limited to the illustrated configuration, and the defrosting pipe cover 58 may be configured by two members, for example, a member covering the joint 53a between the defrosting pipe 53 and the cooling chamber 57, and a member covering the joint 53b between the defrosting pipe 53 and the machine chamber 24.
The defrosting pipe cover 58 may cover any one of the joint portion 53a between the defrosting pipe 53 and the cooling chamber 57 and the joint portion 53b between the defrosting pipe 53 and the machine chamber 24. This can suppress entry of drainage from the joint portion 53a or 53b into the urethane foam 16.
The defrosting pipe distribution cover 58 may cover both the joint portion 53a and the joint portion 53 b. This can more reliably suppress the entry of drainage into the urethane foam 16.
Fig. 7 is a perspective view of the defrosting pipe cover 58 provided with the defrosting pipe heater 56, and fig. 8 is an expanded view of the defrosting pipe heater 56.
As shown in fig. 7 and 8, the defrosting pipe heater 56 is composed of a heater wire 56a and a sheet-like aluminum plate 56b, and is wound around a cylindrical defrosting pipe cover 58. The defrosting pipe heater 56 is provided such that one surface of the aluminum plate 56b contacts the outer peripheral surface of the defrosting pipe cover 58.
The aluminum plate 56b is wound around the outer peripheral surface of the defrosting pipe distribution cover 58 so that 1 group of opposing edges are along the circumferential direction of the defrosting pipe distribution cover 58 and the other 1 group of opposing edges are along the axial direction of the defrosting pipe distribution cover 58. The size of the opposite group 1 side of the aluminum plate 56b is reduced by the size a in fig. 7 compared to the size of the circumference of the defrost piping cover 58. When the heater 56 for defrosting piping is wound around the defrosting piping cover 58, one of the other 1 group sides of the aluminum plate 56b does not overlap with the other 1 group side of the aluminum plate 56 b. Dimension a is a dimension in which one of the other 1 sets of sides of aluminum plate 56b does not overlap with the other of the other 1 sets of sides, and is at least a value larger than zero. Dimension a may be at least less than half of the circumference of the defrost nozzle 58 and is preferably as small as possible.
By winding the defrosting pipe heater 56 around the outer periphery of the defrosting pipe cover 58 in this way, the defrosting pipe cover 58 blocks the drain water and prevents the drain water from contacting the defrosting pipe heater 56.
The defrosting pipe heater 56 is arranged such that the heater wires 56a do not overlap each other, and the aluminum plates 56b do not overlap each other when wound around the defrosting pipe cover 58. This suppresses a local temperature rise of the defrosting pipe distribution cover 58, and prevents the defrosting pipe distribution cover 58 from being deformed or melted by heat.
The defrosting pipe heater 56 maintains a dimension a, which is a difference between a dimension of a pair of opposing sides along the circumferential direction of the defrosting pipe cover 58 and a dimension of the defrosting pipe cover 58 in the circumferential direction, and the dimension a is made as small as possible. Accordingly, the contact area between the defrosting pipe heater 56 and the defrosting pipe cover 58 is wide, and heat can be efficiently input from the defrosting pipe heater 56 to the defrosting pipe cover 58 and the defrosting pipe 53.
The defrosting pipe heater 56 is disposed between the first vacuum heat insulator 54 and the second vacuum heat insulator 55 together with the defrosting pipe cover 58 and the defrosting pipe 53, and heat of the defrosting pipe heater 56 is not easily released to the outside. Therefore, heat can be efficiently input from the defrosting pipe heater 56 to the defrosting pipe cover 58 and the defrosting pipe 53. The defrosting pipe heater 56 may be used in a configuration in which the first vacuum heat insulator 54 is not provided in the outer box 52, but when the first vacuum heat insulator 54 is provided, the heat of the defrosting pipe heater 56 can be more reliably suppressed from being released to the outside.
According to the refrigerator 1 of embodiment 4 described above, the joint 53a between the cooling chamber 57 and the defrosting pipe 53 and the joint 53b between the defrosting pipe 53 and the machine chamber 24 are covered with the defrosting pipe cover 58. Therefore, even when the drain water leaks from the joint portion 53a or the joint portion 53b, it is possible to suppress deterioration of the heat insulating performance due to the water immersion of the urethane foam 16 and prevent deformation due to the expansion of the urethane foam 16.
Further, by providing the heater 56 for defrosting piping on the outer periphery of the defrosting piping cover 58, even if drain leaks from the joint portion 53a and the joint portion 53b, the drain is shielded by the defrosting piping cover 58 and prevented from contacting the heater 56 for defrosting piping. Therefore, it is possible to propose a refrigerator 1 in which: the defrosting pipe 53 can be prevented from freezing without requiring a water-proof treatment or the like for the defrosting pipe heater 56, and is inexpensive and highly safe.
The defrosting pipe cover 58 and the defrosting pipe heater 56 according to embodiment 4 may be combined with the configurations of embodiments 1 to 3.
Description of reference numerals
1 … refrigerator; 10 … an operation part; 11 … opening and closing the door; 12. 13, 14, 15 … pull out door; 16 … polyurethane foam; 17 … cooler; 18 … blower fan; 19 … compressor; 20 … food racks; 21 … food storage box; 22 … defrost heater; 23 … drain pan; 24 … machine room; 25 … discharge port; 50 … a box body; 51 … inner box; 51a … convex shape; 52 … outer case; 53 … defrost piping; 53a, 53b … joint; 54 … a first vacuum insulation; 55 … second vacuum insulation; 55a … a first concave shape; 55b … second concave shape; 56 … defrosting pipe heater; 56a … heating wire; 56b … aluminum; 57 … cooling chamber; 58 … defrost piping cover; 100 … a refrigerating chamber; 200 … switching chamber; 300 … ice making chamber; 400 … vegetable room; 500 … and freezing chamber.
Claims (13)
1. A refrigerator is characterized by comprising:
a cabinet having an inner cabinet forming a storage chamber and an outer cabinet located outside the inner cabinet to form an outer frame;
a cooler that generates cold air;
a compressor that operates the cooling machine;
a drain pan storing the defrosting water generated by the cooler;
a defrosting pipe that flows the defrosting water to the drain pan;
a first vacuum heat insulating member fixed to the outer box; and
a second vacuum heat insulating member fixed to the inner box,
the cooler, the compressor, and the defrosting pipe are located between the inner box and the outer box,
the second vacuum heat insulator is provided between the inner box and the defrosting pipe,
the second vacuum insulation member is smaller in size than the first vacuum insulation member.
2. The refrigerator according to claim 1,
the second vacuum insulation is disposed between the inner box and the compressor.
3. The refrigerator according to claim 1 or 2,
the second vacuum insulation is disposed along an outside of the inner box.
4. The refrigerator according to any one of claims 1 to 3,
the second vacuum insulation member has a curved shape along the shape of the inner box.
5. The refrigerator according to any one of claims 1 to 4,
the first vacuum insulation member is not located between the outer box and the defrosting pipe.
6. The refrigerator according to any one of claims 1 to 4,
the refrigerator is provided with a heater fixed on the defrosting pipe,
the first vacuum insulation member is located between the outer box and the defrosting pipe.
7. The refrigerator according to any one of claims 1 to 6,
the first vacuum insulation is not located between the outer box and the compressor.
8. The refrigerator according to any one of claims 1 to 7,
the second vacuum insulation member has a first concave shape at a contact surface thereof contacting the inner case.
9. The refrigerator according to any one of claims 1 to 8,
the second vacuum insulation member has a second concave shape on a surface opposite to a contact surface with the inner box.
10. The refrigerator according to any one of claims 1 to 7,
the second vacuum insulation member has a first concave shape at a contact surface thereof contacting the inner case,
the second vacuum insulation member has a second concave shape on a surface opposite to a contact surface with the inner box,
the first concave shape and the second concave shape do not overlap on a projection surface.
11. The refrigerator according to claim 10,
the inner box has a convex shape formed on a contact surface with the second vacuum heat insulating material,
the first concave shape engages the convex shape.
12. The refrigerator according to any one of claims 1 to 11,
the refrigerator includes a defrosting pipe cover that covers at least one of a joint portion between the defrosting pipe and a cooling chamber in which the cooling machine is housed and a joint portion between the defrosting pipe and a machine chamber in which the compressor and the drain pan are housed.
13. The refrigerator according to claim 12,
the refrigerator is provided with a heater for defrosting pipe arranged on the defrosting pipe cover,
in a normal direction of the defrosting pipe heater, a part of the defrosting pipe heater does not overlap with another part of the defrosting pipe heater.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JPPCT/JP2018/007742 | 2018-03-01 | ||
| PCT/JP2018/007742 WO2019167223A1 (en) | 2018-03-01 | 2018-03-01 | Refrigerator |
| PCT/JP2018/028608 WO2019167304A1 (en) | 2018-03-01 | 2018-07-31 | Refrigerator |
| JPPCT/JP2018/028608 | 2018-07-31 | ||
| PCT/JP2019/006325 WO2019167755A1 (en) | 2018-03-01 | 2019-02-20 | Refrigerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111771094A true CN111771094A (en) | 2020-10-13 |
| CN111771094B CN111771094B (en) | 2022-04-15 |
Family
ID=67804948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980015499.4A Active CN111771094B (en) | 2018-03-01 | 2019-02-20 | Refrigerator with a door |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN111771094B (en) |
| MY (1) | MY188702A (en) |
| WO (1) | WO2019167755A1 (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53149970U (en) * | 1977-04-30 | 1978-11-25 | ||
| JPH07120138A (en) * | 1993-10-25 | 1995-05-12 | Hitachi Ltd | Vacuum insulated box |
| JPH09152256A (en) * | 1995-11-29 | 1997-06-10 | Sanyo Electric Co Ltd | Draining pipe |
| JP2004101028A (en) * | 2002-09-06 | 2004-04-02 | Matsushita Refrig Co Ltd | Refrigerator |
| JP2005164193A (en) * | 2003-12-05 | 2005-06-23 | Matsushita Electric Ind Co Ltd | Refrigerator |
| CN103975207A (en) * | 2011-12-06 | 2014-08-06 | 松下电器产业株式会社 | Refrigerator |
| JP2014152830A (en) * | 2013-02-06 | 2014-08-25 | Samsung Electronics Co Ltd | Vacuum heat insulation material, heat insulation box body, and refrigerator |
-
2019
- 2019-02-20 MY MYPI2020004340A patent/MY188702A/en unknown
- 2019-02-20 WO PCT/JP2019/006325 patent/WO2019167755A1/en active Application Filing
- 2019-02-20 CN CN201980015499.4A patent/CN111771094B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53149970U (en) * | 1977-04-30 | 1978-11-25 | ||
| JPH07120138A (en) * | 1993-10-25 | 1995-05-12 | Hitachi Ltd | Vacuum insulated box |
| JPH09152256A (en) * | 1995-11-29 | 1997-06-10 | Sanyo Electric Co Ltd | Draining pipe |
| JP2004101028A (en) * | 2002-09-06 | 2004-04-02 | Matsushita Refrig Co Ltd | Refrigerator |
| JP2005164193A (en) * | 2003-12-05 | 2005-06-23 | Matsushita Electric Ind Co Ltd | Refrigerator |
| CN103975207A (en) * | 2011-12-06 | 2014-08-06 | 松下电器产业株式会社 | Refrigerator |
| JP2014152830A (en) * | 2013-02-06 | 2014-08-25 | Samsung Electronics Co Ltd | Vacuum heat insulation material, heat insulation box body, and refrigerator |
Also Published As
| Publication number | Publication date |
|---|---|
| MY188702A (en) | 2021-12-24 |
| WO2019167755A1 (en) | 2019-09-06 |
| CN111771094B (en) | 2022-04-15 |
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