阅读说明：本技术 冰箱 (Refrigerator with a door ) 是由 伊藤敬 冈部诚 小高努 于 2019-02-20 设计创作，主要内容包括：能够在不损害冰箱整体的隔热性和组装性的前提下防止除霜配管的冻结。冰箱具备：箱体,其具有内箱和外箱,上述内箱形成储藏室,上述外箱位于上述内箱的外侧而形成外框；冷却机,其生成冷气；压缩机,其使上述冷却机运转；排水盘,其对由上述冷却机产生的除霜水进行储水；除霜配管,其使上述除霜水向上述排水盘流动；第一真空隔热件,其固定于上述外箱；以及第二真空隔热件,其固定于上述内箱,上述冷却机、上述压缩机以及上述除霜水配管位于上述内箱与上述外箱之间,上述第二真空隔热件设置在上述内箱与上述除霜配管之间,上述第二真空隔热件与上述第一真空隔热件相比尺寸较小。(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.)

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.

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